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Posted to commits@beam.apache.org by am...@apache.org on 2017/02/28 22:35:08 UTC

[01/23] beam git commit: Implementation of GroupAlsoByWindowViaWindowSet for the Spark runner.

Repository: beam
Updated Branches:
  refs/heads/master a41afdc68 -> 61e31e622


Implementation of GroupAlsoByWindowViaWindowSet for the Spark runner.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/32a9d61e
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/32a9d61e
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/32a9d61e

Branch: refs/heads/master
Commit: 32a9d61eff79d8456f12a57c711e2b288f9c775b
Parents: bf0c119
Author: Sela <an...@paypal.com>
Authored: Mon Feb 13 16:32:21 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:58 2017 +0200

----------------------------------------------------------------------
 .../SparkGroupAlsoByWindowViaWindowSet.java     | 393 +++++++++++++++++++
 1 file changed, 393 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/32a9d61e/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
new file mode 100644
index 0000000..7902d7c
--- /dev/null
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
@@ -0,0 +1,393 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark.stateful;
+
+import com.google.common.collect.Table;
+import com.google.common.collect.AbstractIterator;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import org.apache.beam.runners.core.GroupAlsoByWindowsDoFn;
+import org.apache.beam.runners.core.OutputWindowedValue;
+import org.apache.beam.runners.core.ReduceFnRunner;
+import org.apache.beam.runners.core.SystemReduceFn;
+import org.apache.beam.runners.core.TimerInternals.TimerData;
+import org.apache.beam.runners.core.triggers.ExecutableTriggerStateMachine;
+import org.apache.beam.runners.core.triggers.TriggerStateMachines;
+import org.apache.beam.runners.spark.SparkPipelineOptions;
+import org.apache.beam.runners.spark.translation.SparkRuntimeContext;
+import org.apache.beam.runners.spark.translation.TranslationUtils;
+import org.apache.beam.runners.spark.translation.WindowingHelpers;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
+import org.apache.beam.runners.spark.util.LateDataUtils;
+import org.apache.beam.runners.spark.util.UnsupportedSideInputReader;
+import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.transforms.Aggregator;
+import org.apache.beam.sdk.transforms.Combine;
+import org.apache.beam.sdk.transforms.Sum;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.transforms.windowing.PaneInfo;
+import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.util.WindowingStrategy;
+import org.apache.beam.sdk.values.KV;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.spark.Partitioner;
+import org.apache.spark.api.java.JavaSparkContext$;
+import org.apache.spark.api.java.function.FlatMapFunction;
+import org.apache.spark.api.java.function.Function;
+import org.apache.spark.streaming.Duration;
+import org.apache.spark.streaming.api.java.JavaDStream;
+import org.apache.spark.streaming.api.java.JavaPairDStream;
+import org.apache.spark.streaming.dstream.DStream;
+import org.apache.spark.streaming.dstream.PairDStreamFunctions;
+import org.joda.time.Instant;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import scala.Function1;
+import scala.Option;
+import scala.Tuple2;
+import scala.Tuple3;
+import scala.collection.Seq;
+import scala.reflect.ClassTag;
+import scala.runtime.AbstractFunction1;
+
+/**
+ * An implementation of {@link org.apache.beam.runners.core.GroupAlsoByWindowViaWindowSetDoFn}
+ * logic for grouping by windows and controlling trigger firings and pane accumulation.
+ *
+ * <p>This implementation is a composite of Spark transformations revolving around state management
+ * using Spark's
+ * {@link PairDStreamFunctions#updateStateByKey(Function1, Partitioner, boolean, ClassTag)}
+ * to update state with new data and timers.
+ *
+ * <p>Using updateStateByKey allows to scan through the entire state visiting not just the
+ * updated state (new values for key) but also check if timers are ready to fire.
+ * Since updateStateByKey bounds the types of state and output to be the same,
+ * a (state, output) tuple is used, filtering the state (and output if no firing)
+ * in the following steps.
+ */
+public class SparkGroupAlsoByWindowViaWindowSet {
+  private static final Logger LOG = LoggerFactory.getLogger(SparkGroupAlsoByWindowViaWindowSet.class);
+
+  /**
+   * A helper class that is essentially a {@link Serializable} {@link AbstractFunction1}.
+   */
+  private abstract static class SerializableFunction1<T1, T2>
+      extends AbstractFunction1<T1, T2> implements Serializable {
+  }
+
+  public static <K, InputT, W extends BoundedWindow>
+      JavaDStream<WindowedValue<KV<K, Iterable<InputT>>>> groupAlsoByWindow(
+          JavaDStream<WindowedValue<KV<K, Iterable<WindowedValue<InputT>>>>> inputDStream,
+          final Coder<InputT> iCoder,
+          final WindowingStrategy<?, W> windowingStrategy,
+          final SparkRuntimeContext runtimeContext,
+          final List<Integer> sourceIds) {
+
+    Long checkpointDuration =
+        runtimeContext.getPipelineOptions().as(SparkPipelineOptions.class)
+            .getCheckpointDurationMillis();
+
+    // we have to switch to Scala API to avoid Optional in the Java API, see: SPARK-4819.
+    // we also have a broader API for Scala (access to the actual key and entire iterator).
+    DStream<Tuple2<K, Iterable<WindowedValue<InputT>>>> pairDStream =
+        inputDStream
+            .map(WindowingHelpers.<KV<K, Iterable<WindowedValue<InputT>>>>unwindowFunction())
+            .mapToPair(TranslationUtils.<K, Iterable<WindowedValue<InputT>>>toPairFunction())
+            .dstream();
+    PairDStreamFunctions<K, Iterable<WindowedValue<InputT>>> pairDStreamFunctions =
+        DStream.toPairDStreamFunctions(
+        pairDStream,
+        JavaSparkContext$.MODULE$.<K>fakeClassTag(),
+        JavaSparkContext$.MODULE$.<Iterable<WindowedValue<InputT>>>fakeClassTag(),
+        null);
+    int defaultNumPartitions = pairDStreamFunctions.defaultPartitioner$default$1();
+    Partitioner partitioner = pairDStreamFunctions.defaultPartitioner(defaultNumPartitions);
+
+    // use updateStateByKey to scan through the state and update elements and timers.
+    DStream<Tuple2<K, Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>
+        firedStream = pairDStreamFunctions.updateStateByKey(
+            new SerializableFunction1<
+                scala.collection.Iterator<Tuple3<K, Seq<Iterable<WindowedValue<InputT>>>,
+                    Option<Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>>,
+                scala.collection.Iterator<Tuple2<K, Tuple2<StateAndTimers,
+                    List<WindowedValue<KV<K, Iterable<InputT>>>>>>>>() {
+
+      @Override
+      public scala.collection.Iterator<Tuple2<K, Tuple2<StateAndTimers,
+          List<WindowedValue<KV<K, Iterable<InputT>>>>>>> apply(
+              final scala.collection.Iterator<Tuple3<K, Seq<Iterable<WindowedValue<InputT>>>,
+              Option<Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>> iter) {
+        //--- ACTUAL STATEFUL OPERATION:
+        //
+        // Input Iterator: the partition (~bundle) of a cogrouping of the input
+        // and the previous state (if exists).
+        //
+        // Output Iterator: the output key, and the updated state.
+        //
+        // possible input scenarios for (K, Seq, Option<S>):
+        // (1) Option<S>.isEmpty: new data with no previous state.
+        // (2) Seq.isEmpty: no new data, but evaluating previous state (timer-like behaviour).
+        // (3) Seq.nonEmpty && Option<S>.isDefined: new data with previous state.
+
+        final SystemReduceFn<K, InputT, Iterable<InputT>, Iterable<InputT>, W> reduceFn =
+            SystemReduceFn.buffering(iCoder);
+        final OutputWindowedValueHolder<K, InputT> outputHolder =
+            new OutputWindowedValueHolder<>();
+        // use in memory Aggregators since Spark Accumulators are not resilient
+        // in stateful operators, once done with this partition.
+        final InMemoryLongSumAggregator droppedDueToClosedWindow = new InMemoryLongSumAggregator(
+            GroupAlsoByWindowsDoFn.DROPPED_DUE_TO_CLOSED_WINDOW_COUNTER);
+        final InMemoryLongSumAggregator droppedDueToLateness = new InMemoryLongSumAggregator(
+            GroupAlsoByWindowsDoFn.DROPPED_DUE_TO_LATENESS_COUNTER);
+
+        AbstractIterator<
+            Tuple2<K, Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>
+                outIter = new AbstractIterator<Tuple2<K,
+                    Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>() {
+                  @Override
+                  protected Tuple2<K, Tuple2<StateAndTimers,
+                      List<WindowedValue<KV<K, Iterable<InputT>>>>>> computeNext() {
+                    // input iterator is a Spark partition (~bundle), containing keys and their
+                    // (possibly) previous-state and (possibly) new data.
+                    while (iter.hasNext()) {
+                      // for each element in the partition:
+                      Tuple3<K, Seq<Iterable<WindowedValue<InputT>>>, Option<Tuple2<StateAndTimers,
+                          List<WindowedValue<KV<K, Iterable<InputT>>>>>>> next = iter.next();
+                      K key = next._1();
+
+                      Seq<Iterable<WindowedValue<InputT>>> seq = next._2();
+
+                      Option<Tuple2<StateAndTimers,
+                          List<WindowedValue<KV<K, Iterable<InputT>>>>>>
+                              prevStateAndTimersOpt = next._3();
+
+                      SparkStateInternals<K> stateInternals;
+                      SparkTimerInternals timerInternals = SparkTimerInternals.forStreamFromSources(
+                          sourceIds, GlobalWatermarkHolder.get());
+                      // get state(internals) per key.
+                      if (prevStateAndTimersOpt.isEmpty()) {
+                        // no previous state.
+                        stateInternals = SparkStateInternals.forKey(key);
+                      } else {
+                        // with pre-existing state.
+                        StateAndTimers prevStateAndTimers = prevStateAndTimersOpt.get()._1();
+                        stateInternals = SparkStateInternals.forKeyAndState(key,
+                            prevStateAndTimers.getState());
+                        timerInternals.addTimers(prevStateAndTimers.getTimers());
+                      }
+
+                      ReduceFnRunner<K, InputT, Iterable<InputT>, W> reduceFnRunner =
+                          new ReduceFnRunner<>(
+                              key,
+                              windowingStrategy,
+                              ExecutableTriggerStateMachine.create(
+                                  TriggerStateMachines.stateMachineForTrigger(
+                                      windowingStrategy.getTrigger())),
+                              stateInternals,
+                              timerInternals,
+                              outputHolder,
+                              new UnsupportedSideInputReader("GroupAlsoByWindow"),
+                              droppedDueToClosedWindow,
+                              reduceFn,
+                              runtimeContext.getPipelineOptions());
+
+                      outputHolder.clear(); // clear before potential use.
+                      if (!seq.isEmpty()) {
+                        // new input for key.
+                        try {
+                          Iterable<WindowedValue<InputT>> elementsIterable = seq.head();
+                          Iterable<WindowedValue<InputT>> validElements =
+                              LateDataUtils
+                                  .dropExpiredWindows(
+                                      key,
+                                      elementsIterable,
+                                      timerInternals,
+                                      windowingStrategy,
+                                      droppedDueToLateness);
+                          reduceFnRunner.processElements(validElements);
+                        } catch (Exception e) {
+                          throw new RuntimeException(
+                              "Failed to process element with ReduceFnRunner", e);
+                        }
+                      } else if (stateInternals.getState().isEmpty()) {
+                        // no input and no state -> GC evict now.
+                        continue;
+                      }
+                      try {
+                        // advance the watermark to HWM to fire by timers.
+                        timerInternals.advanceWatermark();
+                        // call on timers that are ready.
+                        reduceFnRunner.onTimers(timerInternals.getTimersReadyToProcess());
+                      } catch (Exception e) {
+                        throw new RuntimeException(
+                            "Failed to process ReduceFnRunner onTimer.", e);
+                      }
+                      // this is mostly symbolic since actual persist is done by emitting output.
+                      reduceFnRunner.persist();
+                      // obtain output, if fired.
+                      List<WindowedValue<KV<K, Iterable<InputT>>>> outputs = outputHolder.get();
+                      if (!outputs.isEmpty() || !stateInternals.getState().isEmpty()) {
+                        StateAndTimers updated = new StateAndTimers(stateInternals.getState(),
+                            timerInternals.getTimers());
+                        // persist Spark's state by outputting.
+                        return new Tuple2<>(key, new Tuple2<>(updated, outputs));
+                      }
+                      // an empty state with no output, can be evicted completely - do nothing.
+                    }
+                    return endOfData();
+                  }
+        };
+
+        // log if there's something to log.
+        long lateDropped = droppedDueToLateness.getSum();
+        if (lateDropped > 0) {
+          LOG.info(String.format("Dropped %d elements due to lateness.", lateDropped));
+          droppedDueToLateness.zero();
+        }
+        long closedWindowDropped = droppedDueToClosedWindow.getSum();
+        if (closedWindowDropped > 0) {
+          LOG.info(String.format("Dropped %d elements due to closed window.", closedWindowDropped));
+          droppedDueToClosedWindow.zero();
+        }
+
+        return scala.collection.JavaConversions.asScalaIterator(outIter);
+      }
+    }, partitioner, true, JavaSparkContext$.MODULE$.<Tuple2<StateAndTimers,
+        List<WindowedValue<KV<K, Iterable<InputT>>>>>>fakeClassTag())
+            .checkpoint(new Duration(checkpointDuration));
+
+    // go back to Java now.
+    JavaPairDStream<K, Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>
+        javaFiredStream = JavaPairDStream.fromPairDStream(
+            firedStream,
+            JavaSparkContext$.MODULE$.<K>fakeClassTag(),
+            JavaSparkContext$.MODULE$.<Tuple2<StateAndTimers,
+                List<WindowedValue<KV<K, Iterable<InputT>>>>>>fakeClassTag());
+
+    // filter state-only output (nothing to fire) and remove the state from the output.
+    return javaFiredStream.filter(
+        new Function<Tuple2<K, Tuple2<StateAndTimers,
+            List<WindowedValue<KV<K, Iterable<InputT>>>>>>, Boolean>() {
+              @Override
+              public Boolean call(
+                  Tuple2<K, Tuple2<StateAndTimers,
+                  List<WindowedValue<KV<K, Iterable<InputT>>>>>> t2) throws Exception {
+                // filter output if defined.
+                return !t2._2()._2().isEmpty();
+              }
+        })
+        .flatMap(
+            new FlatMapFunction<Tuple2<K, Tuple2<StateAndTimers,
+                List<WindowedValue<KV<K, Iterable<InputT>>>>>>,
+                WindowedValue<KV<K, Iterable<InputT>>>>() {
+              @Override
+              public Iterable<WindowedValue<KV<K, Iterable<InputT>>>> call(
+                  Tuple2<K, Tuple2<StateAndTimers,
+                  List<WindowedValue<KV<K, Iterable<InputT>>>>>> t2) throws Exception {
+                // drop the state since it is already persisted at this point.
+                return t2._2()._2();
+              }
+        });
+  }
+
+  private static class StateAndTimers {
+    //Serializable state for internals (namespace to state tag to coded value).
+    private final Table<String, String, byte[]> state;
+    private final Collection<TimerData> timers;
+
+    private StateAndTimers(
+        Table<String, String, byte[]> state, Collection<TimerData> timers) {
+      this.state = state;
+      this.timers = timers;
+    }
+
+    public Table<String, String, byte[]> getState() {
+      return state;
+    }
+
+    public Collection<TimerData> getTimers() {
+      return timers;
+    }
+  }
+
+  private static class OutputWindowedValueHolder<K, V>
+      implements OutputWindowedValue<KV<K, Iterable<V>>> {
+    private List<WindowedValue<KV<K, Iterable<V>>>> windowedValues = new ArrayList<>();
+
+    @Override
+    public void outputWindowedValue(
+        KV<K, Iterable<V>> output,
+        Instant timestamp,
+        Collection<? extends BoundedWindow> windows,
+        PaneInfo pane) {
+      windowedValues.add(WindowedValue.of(output, timestamp, windows, pane));
+    }
+
+    private List<WindowedValue<KV<K, Iterable<V>>>> get() {
+      return windowedValues;
+    }
+
+    private void clear() {
+      windowedValues.clear();
+    }
+
+    @Override
+    public <SideOutputT> void sideOutputWindowedValue(
+        TupleTag<SideOutputT> tag,
+        SideOutputT output, Instant timestamp,
+        Collection<? extends BoundedWindow> windows,
+        PaneInfo pane) {
+      throw new UnsupportedOperationException("Side outputs are not allowed in GroupAlsoByWindow.");
+    }
+  }
+
+  private static class InMemoryLongSumAggregator implements Aggregator<Long, Long> {
+    private final String name;
+    private long sum = 0;
+
+    public void zero() {
+      sum = 0;
+    }
+
+    public long getSum() {
+      return sum;
+    }
+
+    InMemoryLongSumAggregator(String name) {
+      this.name = name;
+    }
+
+    @Override
+    public void addValue(Long value) {
+      sum += value;
+    }
+
+    @Override
+    public String getName() {
+      return name;
+    }
+
+    @Override
+    public Combine.CombineFn<Long, ?, Long> getCombineFn() {
+      return Sum.ofLongs();
+    }
+  }
+}


[20/23] beam git commit: Make CreateStream a TimestampedValue Source.

Posted by am...@apache.org.
Make CreateStream a TimestampedValue Source.

fixup! a nicer DSL to construct CreateStream.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/62ddca63
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/62ddca63
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/62ddca63

Branch: refs/heads/master
Commit: 62ddca638ae76918f3a0a5fac4ca8fbdb1c7fb9a
Parents: 123f482
Author: Sela <an...@paypal.com>
Authored: Mon Feb 27 23:35:10 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:09 2017 +0200

----------------------------------------------------------------------
 .../beam/runners/spark/io/CreateStream.java     | 66 ++++++++++++-----
 .../streaming/StreamingTransformTranslator.java | 26 +++++--
 .../runners/spark/SparkPipelineStateTest.java   |  2 +-
 .../translation/streaming/CreateStreamTest.java | 76 ++++++++------------
 .../streaming/TrackStreamingSourcesTest.java    | 22 +++---
 5 files changed, 111 insertions(+), 81 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/62ddca63/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
index 70784f1..f2e0bb3 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
@@ -19,11 +19,16 @@ package org.apache.beam.runners.spark.io;
 
 import static com.google.common.base.Preconditions.checkArgument;
 
+import com.google.common.collect.Lists;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.Deque;
 import java.util.LinkedList;
+import java.util.List;
 import java.util.Queue;
 import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
+import org.apache.beam.sdk.coders.CannotProvideCoderException;
+import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.transforms.PTransform;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.util.WindowingStrategy;
@@ -83,20 +88,22 @@ import org.joda.time.Instant;
 public final class CreateStream<T> extends PTransform<PBegin, PCollection<T>> {
 
   private final Duration batchInterval;
-  private final Instant initialSystemTime;
-  private final Queue<Iterable<T>> batches = new LinkedList<>();
+  private final Queue<Iterable<TimestampedValue<T>>> batches = new LinkedList<>();
   private final Deque<SparkWatermarks> times = new LinkedList<>();
+  private final Coder<T> coder;
+  private Instant initialSystemTime;
 
   private Instant lowWatermark = BoundedWindow.TIMESTAMP_MIN_VALUE; //for test purposes.
 
-  private CreateStream(Duration batchInterval, Instant initialSystemTime) {
+  private CreateStream(Duration batchInterval, Instant initialSystemTime, Coder<T> coder) {
     this.batchInterval = batchInterval;
     this.initialSystemTime = initialSystemTime;
+    this.coder = coder;
   }
 
   /** Set the batch interval for the stream. */
-  public static <T> CreateStream<T> withBatchInterval(Duration batchInterval) {
-    return new CreateStream<>(batchInterval, new Instant(0));
+  public static <T> CreateStream<T> of(Coder<T> coder, Duration batchInterval) {
+    return new CreateStream<>(batchInterval, new Instant(0), coder);
   }
 
   /**
@@ -104,25 +111,46 @@ public final class CreateStream<T> extends PTransform<PBegin, PCollection<T>> {
    * This is backed by a {@link Queue} so stream input order would keep the population order (FIFO).
    */
   @SafeVarargs
-  public final CreateStream<T> nextBatch(T... batchElements) {
+  public final CreateStream<T> nextBatch(TimestampedValue<T>... batchElements) {
     // validate timestamps if timestamped elements.
-    for (T element: batchElements) {
-      if (element instanceof TimestampedValue) {
-        TimestampedValue timestampedValue = (TimestampedValue) element;
-        checkArgument(
-            timestampedValue.getTimestamp().isBefore(BoundedWindow.TIMESTAMP_MAX_VALUE),
-            "Elements must have timestamps before %s. Got: %s",
-            BoundedWindow.TIMESTAMP_MAX_VALUE,
-            timestampedValue.getTimestamp());
-      }
+    for (TimestampedValue<T> element: batchElements) {
+      TimestampedValue timestampedValue = (TimestampedValue) element;
+      checkArgument(
+          timestampedValue.getTimestamp().isBefore(BoundedWindow.TIMESTAMP_MAX_VALUE),
+          "Elements must have timestamps before %s. Got: %s",
+          BoundedWindow.TIMESTAMP_MAX_VALUE,
+          timestampedValue.getTimestamp());
     }
     batches.offer(Arrays.asList(batchElements));
     return this;
   }
 
+  /**
+   * For non-timestamped elements.
+   */
+  @SafeVarargs
+  public final CreateStream<T> nextBatch(T... batchElements) {
+    List<TimestampedValue<T>> timestamped = Lists.newArrayListWithCapacity(batchElements.length);
+    // as TimestampedValue.
+    for (T element: batchElements) {
+      timestamped.add(TimestampedValue.atMinimumTimestamp(element));
+    }
+    batches.offer(timestamped);
+    return this;
+  }
+
+  /**
+   * Adds an empty batch.
+   */
+  public CreateStream<T> emptyBatch() {
+    batches.offer(Collections.<TimestampedValue<T>>emptyList());
+    return this;
+  }
+
   /** Set the initial synchronized processing time. */
   public CreateStream<T> initialSystemTimeAt(Instant initialSystemTime) {
-    return new CreateStream<>(batchInterval, initialSystemTime);
+    this.initialSystemTime = initialSystemTime;
+    return this;
   }
 
   /**
@@ -160,7 +188,7 @@ public final class CreateStream<T> extends PTransform<PBegin, PCollection<T>> {
   }
 
   /** Get the underlying queue representing the mock stream of micro-batches. */
-  public Queue<Iterable<T>> getBatches() {
+  public Queue<Iterable<TimestampedValue<T>>> getBatches() {
     return batches;
   }
 
@@ -178,4 +206,8 @@ public final class CreateStream<T> extends PTransform<PBegin, PCollection<T>> {
         input.getPipeline(), WindowingStrategy.globalDefault(), PCollection.IsBounded.UNBOUNDED);
   }
 
+  @Override
+  protected Coder<T> getDefaultOutputCoder() throws CannotProvideCoderException {
+    return coder;
+  }
 }

http://git-wip-us.apache.org/repos/asf/beam/blob/62ddca63/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
index fc98781..4a07741 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
@@ -31,6 +31,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Queue;
 import java.util.concurrent.LinkedBlockingQueue;
+import javax.annotation.Nonnull;
 import org.apache.beam.runners.spark.aggregators.NamedAggregators;
 import org.apache.beam.runners.spark.aggregators.SparkAggregators;
 import org.apache.beam.runners.spark.coders.CoderHelpers;
@@ -67,6 +68,8 @@ import org.apache.beam.sdk.transforms.GroupByKey;
 import org.apache.beam.sdk.transforms.PTransform;
 import org.apache.beam.sdk.transforms.ParDo;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
+import org.apache.beam.sdk.transforms.windowing.PaneInfo;
 import org.apache.beam.sdk.transforms.windowing.Window;
 import org.apache.beam.sdk.transforms.windowing.WindowFn;
 import org.apache.beam.sdk.util.CombineFnUtil;
@@ -75,6 +78,7 @@ import org.apache.beam.sdk.util.WindowingStrategy;
 import org.apache.beam.sdk.values.KV;
 import org.apache.beam.sdk.values.PCollection;
 import org.apache.beam.sdk.values.TaggedPValue;
+import org.apache.beam.sdk.values.TimestampedValue;
 import org.apache.beam.sdk.values.TupleTag;
 import org.apache.spark.Accumulator;
 import org.apache.spark.api.java.JavaPairRDD;
@@ -87,6 +91,7 @@ import org.apache.spark.streaming.api.java.JavaPairDStream;
 import org.apache.spark.streaming.api.java.JavaStreamingContext;
 
 
+
 /**
  * Supports translation between a Beam transform, and Spark's operations on DStreams.
  */
@@ -127,14 +132,25 @@ final class StreamingTransformTranslator {
       public void evaluate(CreateStream<T> transform, EvaluationContext context) {
         Coder<T> coder = context.getOutput(transform).getCoder();
         JavaStreamingContext jssc = context.getStreamingContext();
-        Queue<Iterable<T>> values = transform.getBatches();
-        WindowedValue.ValueOnlyWindowedValueCoder<T> windowCoder =
-            WindowedValue.getValueOnlyCoder(coder);
+        Queue<Iterable<TimestampedValue<T>>> values = transform.getBatches();
+        WindowedValue.FullWindowedValueCoder<T> windowCoder =
+            WindowedValue.FullWindowedValueCoder.of(coder, GlobalWindow.Coder.INSTANCE);
         // create the DStream from queue.
         Queue<JavaRDD<WindowedValue<T>>> rddQueue = new LinkedBlockingQueue<>();
-        for (Iterable<T> v : values) {
+        for (Iterable<TimestampedValue<T>> tv : values) {
           Iterable<WindowedValue<T>> windowedValues =
-              Iterables.transform(v, WindowingHelpers.<T>windowValueFunction());
+              Iterables.transform(
+                  tv,
+                  new com.google.common.base.Function<TimestampedValue<T>, WindowedValue<T>>() {
+                    @Override
+                    public WindowedValue<T> apply(@Nonnull TimestampedValue<T> timestampedValue) {
+                      return WindowedValue.of(
+                          timestampedValue.getValue(),
+                          timestampedValue.getTimestamp(),
+                          GlobalWindow.INSTANCE,
+                          PaneInfo.NO_FIRING);
+                    }
+              });
           JavaRDD<WindowedValue<T>> rdd =
               jssc.sparkContext()
                   .parallelize(CoderHelpers.toByteArrays(windowedValues, windowCoder))

http://git-wip-us.apache.org/repos/asf/beam/blob/62ddca63/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
index c856203..37a201c 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
@@ -75,7 +75,7 @@ public class SparkPipelineStateTest implements Serializable {
 
   private PTransform<PBegin, PCollection<String>> getValues(final SparkPipelineOptions options) {
     return options.isStreaming()
-        ? CreateStream.<String>withBatchInterval(Duration.millis(1)).nextBatch("one", "two")
+        ? CreateStream.of(StringUtf8Coder.of(), Duration.millis(1)).nextBatch("one", "two")
         : Create.of("one", "two");
   }
 

http://git-wip-us.apache.org/repos/asf/beam/blob/62ddca63/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
index f2783a1..ff77535 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
@@ -32,10 +32,8 @@ import org.apache.beam.sdk.coders.StringUtf8Coder;
 import org.apache.beam.sdk.coders.VarIntCoder;
 import org.apache.beam.sdk.testing.PAssert;
 import org.apache.beam.sdk.transforms.Count;
-import org.apache.beam.sdk.transforms.DoFn;
 import org.apache.beam.sdk.transforms.Flatten;
 import org.apache.beam.sdk.transforms.GroupByKey;
-import org.apache.beam.sdk.transforms.ParDo;
 import org.apache.beam.sdk.transforms.SerializableFunction;
 import org.apache.beam.sdk.transforms.Sum;
 import org.apache.beam.sdk.transforms.Values;
@@ -83,9 +81,9 @@ public class CreateStreamTest implements Serializable {
   public void testLateDataAccumulating() throws IOException {
     Pipeline p = pipelineRule.createPipeline();
     Instant instant = new Instant(0);
-    CreateStream<TimestampedValue<Integer>> source =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
-            .nextBatch()
+    CreateStream<Integer> source =
+        CreateStream.of(VarIntCoder.of(), pipelineRule.batchDuration())
+            .emptyBatch()
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(6)))
             .nextBatch(
                 TimestampedValue.of(1, instant),
@@ -104,8 +102,7 @@ public class CreateStreamTest implements Serializable {
                 TimestampedValue.of(-3, instant));
 
     PCollection<Integer> windowed = p
-        .apply(source).setCoder(TimestampedValue.TimestampedValueCoder.of(VarIntCoder.of()))
-        .apply(ParDo.of(new OnlyValue<Integer>()))
+        .apply(source)
         .apply(Window.<Integer>into(FixedWindows.of(Duration.standardMinutes(5))).triggering(
             AfterWatermark.pastEndOfWindow()
                 .withEarlyFirings(AfterProcessingTime.pastFirstElementInPane()
@@ -156,8 +153,8 @@ public class CreateStreamTest implements Serializable {
   @Test
   public void testDiscardingMode() throws IOException {
     Pipeline p = pipelineRule.createPipeline();
-    CreateStream<TimestampedValue<String>> source =
-        CreateStream.<TimestampedValue<String>>withBatchInterval(pipelineRule.batchDuration())
+    CreateStream<String> source =
+        CreateStream.of(StringUtf8Coder.of(), pipelineRule.batchDuration())
             .nextBatch(
                 TimestampedValue.of("firstPane", new Instant(100)),
                 TimestampedValue.of("alsoFirstPane", new Instant(200)))
@@ -172,8 +169,7 @@ public class CreateStreamTest implements Serializable {
     FixedWindows windowFn = FixedWindows.of(Duration.millis(1000L));
     Duration allowedLateness = Duration.millis(5000L);
     PCollection<String> values =
-        p.apply(source).setCoder(TimestampedValue.TimestampedValueCoder.of(StringUtf8Coder.of()))
-            .apply(ParDo.of(new OnlyValue<String>()))
+        p.apply(source)
             .apply(
                 Window.<String>into(windowFn)
                     .triggering(
@@ -207,9 +203,9 @@ public class CreateStreamTest implements Serializable {
   public void testFirstElementLate() throws IOException {
     Pipeline p = pipelineRule.createPipeline();
     Instant lateElementTimestamp = new Instant(-1_000_000);
-    CreateStream<TimestampedValue<String>> source =
-        CreateStream.<TimestampedValue<String>>withBatchInterval(pipelineRule.batchDuration())
-            .nextBatch()
+    CreateStream<String> source =
+        CreateStream.of(StringUtf8Coder.of(), pipelineRule.batchDuration())
+            .emptyBatch()
             .advanceWatermarkForNextBatch(new Instant(0))
             .nextBatch(
                 TimestampedValue.of("late", lateElementTimestamp),
@@ -219,8 +215,6 @@ public class CreateStreamTest implements Serializable {
     FixedWindows windowFn = FixedWindows.of(Duration.millis(1000L));
     Duration allowedLateness = Duration.millis(5000L);
     PCollection<String> values = p.apply(source)
-            .setCoder(TimestampedValue.TimestampedValueCoder.of(StringUtf8Coder.of()))
-        .apply(ParDo.of(new OnlyValue<String>()))
         .apply(Window.<String>into(windowFn).triggering(DefaultTrigger.of())
             .discardingFiredPanes()
             .withAllowedLateness(allowedLateness))
@@ -243,8 +237,8 @@ public class CreateStreamTest implements Serializable {
   public void testElementsAtAlmostPositiveInfinity() throws IOException {
     Pipeline p = pipelineRule.createPipeline();
     Instant endOfGlobalWindow = GlobalWindow.INSTANCE.maxTimestamp();
-    CreateStream<TimestampedValue<String>> source =
-        CreateStream.<TimestampedValue<String>>withBatchInterval(pipelineRule.batchDuration())
+    CreateStream<String> source =
+        CreateStream.of(StringUtf8Coder.of(), pipelineRule.batchDuration())
             .nextBatch(
                 TimestampedValue.of("foo", endOfGlobalWindow),
                 TimestampedValue.of("bar", endOfGlobalWindow))
@@ -252,8 +246,6 @@ public class CreateStreamTest implements Serializable {
 
     FixedWindows windows = FixedWindows.of(Duration.standardHours(6));
     PCollection<String> windowedValues = p.apply(source)
-            .setCoder(TimestampedValue.TimestampedValueCoder.of(StringUtf8Coder.of()))
-        .apply(ParDo.of(new OnlyValue<String>()))
         .apply(Window.<String>into(windows))
         .apply(WithKeys.<Integer, String>of(1))
         .apply(GroupByKey.<Integer, String>create())
@@ -270,16 +262,16 @@ public class CreateStreamTest implements Serializable {
   public void testMultipleStreams() throws IOException {
     Pipeline p = pipelineRule.createPipeline();
     CreateStream<String> source =
-        CreateStream.<String>withBatchInterval(pipelineRule.batchDuration())
+        CreateStream.of(StringUtf8Coder.of(), pipelineRule.batchDuration())
             .nextBatch("foo", "bar")
             .advanceNextBatchWatermarkToInfinity();
     CreateStream<Integer> other =
-        CreateStream.<Integer>withBatchInterval(pipelineRule.batchDuration())
+        CreateStream.of(VarIntCoder.of(), pipelineRule.batchDuration())
             .nextBatch(1, 2, 3, 4)
             .advanceNextBatchWatermarkToInfinity();
 
     PCollection<String> createStrings =
-        p.apply("CreateStrings", source).setCoder(StringUtf8Coder.of())
+        p.apply("CreateStrings", source)
             .apply("WindowStrings",
                 Window.<String>triggering(AfterPane.elementCountAtLeast(2))
                     .withAllowedLateness(Duration.ZERO)
@@ -287,7 +279,7 @@ public class CreateStreamTest implements Serializable {
     PAssert.that(createStrings).containsInAnyOrder("foo", "bar");
 
     PCollection<Integer> createInts =
-        p.apply("CreateInts", other).setCoder(VarIntCoder.of())
+        p.apply("CreateInts", other)
             .apply("WindowInts",
                 Window.<Integer>triggering(AfterPane.elementCountAtLeast(4))
                     .withAllowedLateness(Duration.ZERO)
@@ -301,18 +293,18 @@ public class CreateStreamTest implements Serializable {
   public void testFlattenedWithWatermarkHold() throws IOException {
     Pipeline p = pipelineRule.createPipeline();
     Instant instant = new Instant(0);
-    CreateStream<TimestampedValue<Integer>> source1 =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
-            .nextBatch()
+    CreateStream<Integer> source1 =
+        CreateStream.of(VarIntCoder.of(), pipelineRule.batchDuration())
+            .emptyBatch()
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(5)))
             .nextBatch(
                 TimestampedValue.of(1, instant),
                 TimestampedValue.of(2, instant),
                 TimestampedValue.of(3, instant))
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(10)));
-    CreateStream<TimestampedValue<Integer>> source2 =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
-            .nextBatch()
+    CreateStream<Integer> source2 =
+        CreateStream.of(VarIntCoder.of(), pipelineRule.batchDuration())
+            .emptyBatch()
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(1)))
             .nextBatch(
                 TimestampedValue.of(4, instant))
@@ -322,15 +314,13 @@ public class CreateStreamTest implements Serializable {
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(5)));
 
     PCollection<Integer> windowed1 = p
-        .apply(source1).setCoder(TimestampedValue.TimestampedValueCoder.of(VarIntCoder.of()))
-        .apply(ParDo.of(new OnlyValue<Integer>()))
+        .apply(source1)
         .apply(Window.<Integer>into(FixedWindows.of(Duration.standardMinutes(5)))
             .triggering(AfterWatermark.pastEndOfWindow())
             .accumulatingFiredPanes()
             .withAllowedLateness(Duration.ZERO));
     PCollection<Integer> windowed2 = p
-        .apply(source2).setCoder(TimestampedValue.TimestampedValueCoder.of(VarIntCoder.of()))
-        .apply(ParDo.of(new OnlyValue<Integer>()))
+        .apply(source2)
         .apply(Window.<Integer>into(FixedWindows.of(Duration.standardMinutes(5)))
             .triggering(AfterWatermark.pastEndOfWindow())
             .accumulatingFiredPanes()
@@ -352,8 +342,8 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testElementAtPositiveInfinityThrows() {
-    CreateStream<TimestampedValue<Integer>> source =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
+    CreateStream<Integer> source =
+        CreateStream.of(VarIntCoder.of(), pipelineRule.batchDuration())
             .nextBatch(TimestampedValue.of(-1, BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L)));
     thrown.expect(IllegalArgumentException.class);
     source.nextBatch(TimestampedValue.of(1, BoundedWindow.TIMESTAMP_MAX_VALUE));
@@ -362,7 +352,7 @@ public class CreateStreamTest implements Serializable {
   @Test
   public void testAdvanceWatermarkNonMonotonicThrows() {
     CreateStream<Integer> source =
-        CreateStream.<Integer>withBatchInterval(pipelineRule.batchDuration())
+        CreateStream.of(VarIntCoder.of(), pipelineRule.batchDuration())
             .advanceWatermarkForNextBatch(new Instant(0L));
     thrown.expect(IllegalArgumentException.class);
     source.advanceWatermarkForNextBatch(new Instant(-1L));
@@ -371,19 +361,9 @@ public class CreateStreamTest implements Serializable {
   @Test
   public void testAdvanceWatermarkEqualToPositiveInfinityThrows() {
     CreateStream<Integer> source =
-        CreateStream.<Integer>withBatchInterval(pipelineRule.batchDuration())
+        CreateStream.of(VarIntCoder.of(), pipelineRule.batchDuration())
             .advanceWatermarkForNextBatch(BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L));
     thrown.expect(IllegalArgumentException.class);
     source.advanceWatermarkForNextBatch(BoundedWindow.TIMESTAMP_MAX_VALUE);
   }
-
-  private static class OnlyValue<T> extends DoFn<TimestampedValue<T>, T> {
-
-    OnlyValue() { }
-
-    @ProcessElement
-    public void emitTimestampedValue(ProcessContext c) {
-      c.outputWithTimestamp(c.element().getValue(), c.element().getTimestamp());
-    }
-  }
 }

http://git-wip-us.apache.org/repos/asf/beam/blob/62ddca63/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
index 32cef7e..b181a04 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
@@ -77,11 +77,11 @@ public class TrackStreamingSourcesTest {
     Pipeline p = Pipeline.create(options);
 
     CreateStream<Integer> emptyStream =
-        CreateStream.<Integer>withBatchInterval(
-            Duration.millis(options.getBatchIntervalMillis())).nextBatch();
+        CreateStream.of(
+            VarIntCoder.of(),
+            Duration.millis(options.getBatchIntervalMillis())).emptyBatch();
 
-    p.apply(emptyStream).setCoder(VarIntCoder.of())
-        .apply(ParDo.of(new PassthroughFn<>()));
+    p.apply(emptyStream).apply(ParDo.of(new PassthroughFn<>()));
 
     p.traverseTopologically(new StreamingSourceTracker(jssc, p, ParDo.Bound.class,  0));
     assertThat(StreamingSourceTracker.numAssertions, equalTo(1));
@@ -97,14 +97,16 @@ public class TrackStreamingSourcesTest {
     Pipeline p = Pipeline.create(options);
 
     CreateStream<Integer> queueStream1 =
-        CreateStream.<Integer>withBatchInterval(
-            Duration.millis(options.getBatchIntervalMillis())).nextBatch();
+        CreateStream.of(
+            VarIntCoder.of(),
+            Duration.millis(options.getBatchIntervalMillis())).emptyBatch();
     CreateStream<Integer> queueStream2 =
-        CreateStream.<Integer>withBatchInterval(
-            Duration.millis(options.getBatchIntervalMillis())).nextBatch();
+        CreateStream.of(
+            VarIntCoder.of(),
+            Duration.millis(options.getBatchIntervalMillis())).emptyBatch();
 
-    PCollection<Integer> pcol1 = p.apply(queueStream1).setCoder(VarIntCoder.of());
-    PCollection<Integer> pcol2 = p.apply(queueStream2).setCoder(VarIntCoder.of());
+    PCollection<Integer> pcol1 = p.apply(queueStream1);
+    PCollection<Integer> pcol2 = p.apply(queueStream2);
     PCollection<Integer> flattened =
         PCollectionList.of(pcol1).and(pcol2).apply(Flatten.<Integer>pCollections());
     flattened.apply(ParDo.of(new PassthroughFn<>()));


[08/23] beam git commit: Test triggers, panes and watermarks via CreateStream.

Posted by am...@apache.org.
Test triggers, panes and watermarks via CreateStream.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/96d373fe
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/96d373fe
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/96d373fe

Branch: refs/heads/master
Commit: 96d373fe954c263414e7f22ab08979f25cc83188
Parents: 9f14350
Author: Sela <an...@paypal.com>
Authored: Sat Feb 18 22:05:19 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:59 2017 +0200

----------------------------------------------------------------------
 .../beam/runners/spark/io/CreateStream.java     | 125 ++++--
 .../spark/GlobalWatermarkHolderTest.java        | 150 ++++++++
 .../beam/runners/spark/ReuseSparkContext.java   |  46 ---
 .../runners/spark/ReuseSparkContextRule.java    |  46 +++
 .../beam/runners/spark/WatermarkTest.java       | 231 -----------
 .../translation/streaming/CreateStreamTest.java | 385 +++++++++++++++++++
 .../ResumeFromCheckpointStreamingTest.java      | 296 ++++++++------
 7 files changed, 860 insertions(+), 419 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/96d373fe/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
index 7ebba90..2149372 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
@@ -17,57 +17,124 @@
  */
 package org.apache.beam.runners.spark.io;
 
-import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Preconditions.checkArgument;
 
+import java.util.Arrays;
+import java.util.Deque;
+import java.util.LinkedList;
+import java.util.Queue;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
 import org.apache.beam.sdk.transforms.PTransform;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.util.WindowingStrategy;
 import org.apache.beam.sdk.values.PBegin;
 import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.TimestampedValue;
+import org.joda.time.Duration;
+import org.joda.time.Instant;
+
 
 /**
- * Create an input stream from Queue.
+ * Create an input stream from Queue. For SparkRunner tests only.
  *
- * @param <T> stream type
+ * @param <T> stream type.
  */
-public final class CreateStream<T> {
+public final class CreateStream<T> extends PTransform<PBegin, PCollection<T>> {
+
+  private final Duration batchInterval;
+  private final Instant initialSystemTime;
+  private final Queue<Iterable<T>> batches = new LinkedList<>();
+  private final Deque<SparkWatermarks> times = new LinkedList<>();
+
+  private Instant lowWatermark = BoundedWindow.TIMESTAMP_MIN_VALUE; //for test purposes.
 
-  private CreateStream() {
+  private CreateStream(Duration batchInterval, Instant initialSystemTime) {
+    this.batchInterval = batchInterval;
+    this.initialSystemTime = initialSystemTime;
+  }
+
+  /** Set the batch interval for the stream. */
+  public static <T> CreateStream<T> withBatchInterval(Duration batchInterval) {
+    return new CreateStream<>(batchInterval, new Instant(0));
   }
 
   /**
-   * Define the input stream to create from queue.
-   *
-   * @param queuedValues  defines the input stream
-   * @param <T>           stream type
-   * @return the queue that defines the input stream
+   * Enqueue next micro-batch elements.
+   * This is backed by a {@link Queue} so stream input order would keep the population order (FIFO).
    */
-  public static <T> QueuedValues<T> fromQueue(Iterable<Iterable<T>> queuedValues) {
-    return new QueuedValues<>(queuedValues);
+  @SafeVarargs
+  public final CreateStream<T> nextBatch(T... batchElements) {
+    // validate timestamps if timestamped elements.
+    for (T element: batchElements) {
+      if (element instanceof TimestampedValue) {
+        TimestampedValue timestampedValue = (TimestampedValue) element;
+        checkArgument(
+            timestampedValue.getTimestamp().isBefore(BoundedWindow.TIMESTAMP_MAX_VALUE),
+            "Elements must have timestamps before %s. Got: %s",
+            BoundedWindow.TIMESTAMP_MAX_VALUE,
+            timestampedValue.getTimestamp());
+      }
+    }
+    batches.offer(Arrays.asList(batchElements));
+    return this;
+  }
+
+  /** Set the initial synchronized processing time. */
+  public CreateStream<T> initialSystemTimeAt(Instant initialSystemTime) {
+    return new CreateStream<>(batchInterval, initialSystemTime);
   }
 
   /**
-   * {@link PTransform} for queueing values.
+   * Advances the watermark in the next batch.
    */
-  public static final class QueuedValues<T> extends PTransform<PBegin, PCollection<T>> {
+  public CreateStream<T> advanceWatermarkForNextBatch(Instant newWatermark) {
+    checkArgument(
+        !newWatermark.isBefore(lowWatermark), "The watermark is not allowed to decrease!");
+    checkArgument(
+        newWatermark.isBefore(BoundedWindow.TIMESTAMP_MAX_VALUE),
+        "The Watermark cannot progress beyond the maximum. Got: %s. Maximum: %s",
+        newWatermark,
+        BoundedWindow.TIMESTAMP_MAX_VALUE);
+    return advance(newWatermark);
+  }
 
-    private final Iterable<Iterable<T>> queuedValues;
+  /**
+   * Advances the watermark in the next batch to the end-of-time.
+   */
+  public CreateStream<T> advanceNextBatchWatermarkToInfinity() {
+    return advance(BoundedWindow.TIMESTAMP_MAX_VALUE);
+  }
 
-    QueuedValues(Iterable<Iterable<T>> queuedValues) {
-      checkNotNull(
-          queuedValues, "need to set the queuedValues of an Create.QueuedValues transform");
-      this.queuedValues = queuedValues;
-    }
+  private CreateStream<T> advance(Instant newWatermark) {
+    // advance the system time.
+    Instant currentSynchronizedProcessingTime = times.peekLast() == null ? initialSystemTime
+        : times.peekLast().getSynchronizedProcessingTime();
+    Instant nextSynchronizedProcessingTime = currentSynchronizedProcessingTime.plus(batchInterval);
+    checkArgument(
+        nextSynchronizedProcessingTime.isAfter(currentSynchronizedProcessingTime),
+        "Synchronized processing time must always advance.");
+    times.offer(new SparkWatermarks(lowWatermark, newWatermark, nextSynchronizedProcessingTime));
+    lowWatermark = newWatermark;
+    return this;
+  }
 
-    public Iterable<Iterable<T>> getQueuedValues() {
-      return queuedValues;
-    }
+  /** Get the underlying queue representing the mock stream of micro-batches. */
+  public Queue<Iterable<T>> getBatches() {
+    return batches;
+  }
 
-    @Override
-    public PCollection<T> expand(PBegin input) {
-      // Spark streaming micro batches are bounded by default
-      return PCollection.createPrimitiveOutputInternal(input.getPipeline(),
-          WindowingStrategy.globalDefault(), PCollection.IsBounded.UNBOUNDED);
-    }
+  /**
+   * Get times so they can be pushed into the
+   * {@link org.apache.beam.runners.spark.util.GlobalWatermarkHolder}.
+   */
+  public Queue<SparkWatermarks> getTimes() {
+    return times;
+  }
+
+  @Override
+  public PCollection<T> expand(PBegin input) {
+    return PCollection.createPrimitiveOutputInternal(
+        input.getPipeline(), WindowingStrategy.globalDefault(), PCollection.IsBounded.UNBOUNDED);
   }
 
 }

http://git-wip-us.apache.org/repos/asf/beam/blob/96d373fe/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java
new file mode 100644
index 0000000..c1d2944
--- /dev/null
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java
@@ -0,0 +1,150 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark;
+
+import static org.hamcrest.core.IsEqual.equalTo;
+import static org.junit.Assert.assertThat;
+
+import org.apache.beam.runners.spark.translation.SparkContextFactory;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
+import org.apache.beam.sdk.options.PipelineOptionsFactory;
+import org.apache.beam.sdk.testing.RegexMatcher;
+import org.apache.spark.api.java.JavaSparkContext;
+import org.joda.time.Duration;
+import org.joda.time.Instant;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+
+/**
+ * A test suite for the propagation of watermarks in the Spark runner.
+ */
+public class WatermarkTest {
+
+  @Rule
+  public ClearWatermarksRule clearWatermarksRule = new ClearWatermarksRule();
+
+  @Rule
+  public ExpectedException thrown = ExpectedException.none();
+
+  @Rule
+  public ReuseSparkContextRule reuseContext = ReuseSparkContextRule.yes();
+
+  private static final SparkPipelineOptions options =
+      PipelineOptionsFactory.create().as(SparkPipelineOptions.class);
+
+  private static final String INSTANT_PATTERN =
+      "[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}.[0-9]{3}Z";
+
+  @Test
+  public void testLowHighWatermarksAdvance() {
+    JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
+
+    Instant instant = new Instant(0);
+    // low == high.
+    GlobalWatermarkHolder.add(1,
+        new SparkWatermarks(
+            instant.plus(Duration.millis(5)),
+            instant.plus(Duration.millis(5)),
+            instant));
+    GlobalWatermarkHolder.advance(jsc);
+    // low < high.
+    GlobalWatermarkHolder.add(1,
+        new SparkWatermarks(
+            instant.plus(Duration.millis(10)),
+            instant.plus(Duration.millis(15)),
+            instant.plus(Duration.millis(100))));
+    GlobalWatermarkHolder.advance(jsc);
+
+    // assert watermarks in Broadcast.
+    SparkWatermarks currentWatermarks = GlobalWatermarkHolder.get().getValue().get(1);
+    assertThat(currentWatermarks.getLowWatermark(), equalTo(instant.plus(Duration.millis(10))));
+    assertThat(currentWatermarks.getHighWatermark(), equalTo(instant.plus(Duration.millis(15))));
+    assertThat(currentWatermarks.getSynchronizedProcessingTime(),
+        equalTo(instant.plus(Duration.millis(100))));
+
+    // assert illegal watermark advance.
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage(
+        RegexMatcher.matches(
+            "Low watermark " + INSTANT_PATTERN + " cannot be later then high watermark "
+            + INSTANT_PATTERN));
+    // low > high -> not allowed!
+    GlobalWatermarkHolder.add(1,
+        new SparkWatermarks(
+            instant.plus(Duration.millis(25)),
+            instant.plus(Duration.millis(20)),
+            instant.plus(Duration.millis(200))));
+    GlobalWatermarkHolder.advance(jsc);
+  }
+
+  @Test
+  public void testSynchronizedTimeMonotonic() {
+    JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
+
+    Instant instant = new Instant(0);
+    GlobalWatermarkHolder.add(1,
+        new SparkWatermarks(
+            instant.plus(Duration.millis(5)),
+            instant.plus(Duration.millis(10)),
+            instant));
+    GlobalWatermarkHolder.advance(jsc);
+
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("Synchronized processing time must advance.");
+    // no actual advancement of watermarks - fine by Watermarks
+    // but not by synchronized processing time.
+    GlobalWatermarkHolder.add(1,
+        new SparkWatermarks(
+            instant.plus(Duration.millis(5)),
+            instant.plus(Duration.millis(10)),
+            instant));
+    GlobalWatermarkHolder.advance(jsc);
+  }
+
+  @Test
+  public void testMultiSource() {
+    JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
+
+    Instant instant = new Instant(0);
+    GlobalWatermarkHolder.add(1,
+        new SparkWatermarks(
+            instant.plus(Duration.millis(5)),
+            instant.plus(Duration.millis(10)),
+            instant));
+    GlobalWatermarkHolder.add(2,
+        new SparkWatermarks(
+            instant.plus(Duration.millis(3)),
+            instant.plus(Duration.millis(6)),
+            instant));
+
+    GlobalWatermarkHolder.advance(jsc);
+
+    // assert watermarks for source 1.
+    SparkWatermarks watermarksForSource1 = GlobalWatermarkHolder.get().getValue().get(1);
+    assertThat(watermarksForSource1.getLowWatermark(), equalTo(instant.plus(Duration.millis(5))));
+    assertThat(watermarksForSource1.getHighWatermark(), equalTo(instant.plus(Duration.millis(10))));
+
+    // assert watermarks for source 2.
+    SparkWatermarks watermarksForSource2 = GlobalWatermarkHolder.get().getValue().get(2);
+    assertThat(watermarksForSource2.getLowWatermark(), equalTo(instant.plus(Duration.millis(3))));
+    assertThat(watermarksForSource2.getHighWatermark(), equalTo(instant.plus(Duration.millis(6))));
+  }
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/96d373fe/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContext.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContext.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContext.java
deleted file mode 100644
index 027f9fd..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContext.java
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark;
-
-import org.apache.beam.runners.spark.translation.SparkContextFactory;
-import org.junit.rules.ExternalResource;
-
-/**
- * Explicitly set {@link org.apache.spark.SparkContext} to be reused (or not) in tests.
- */
-public class ReuseSparkContext extends ExternalResource {
-
-  private final boolean reuse;
-
-  private ReuseSparkContext(boolean reuse) {
-    this.reuse = reuse;
-  }
-
-  public static ReuseSparkContext no() {
-    return new ReuseSparkContext(false);
-  }
-
-  public static ReuseSparkContext yes() {
-    return new ReuseSparkContext(true);
-  }
-
-  @Override
-  protected void before() throws Throwable {
-    System.setProperty(SparkContextFactory.TEST_REUSE_SPARK_CONTEXT, Boolean.toString(reuse));
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/96d373fe/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java
new file mode 100644
index 0000000..027f9fd
--- /dev/null
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark;
+
+import org.apache.beam.runners.spark.translation.SparkContextFactory;
+import org.junit.rules.ExternalResource;
+
+/**
+ * Explicitly set {@link org.apache.spark.SparkContext} to be reused (or not) in tests.
+ */
+public class ReuseSparkContext extends ExternalResource {
+
+  private final boolean reuse;
+
+  private ReuseSparkContext(boolean reuse) {
+    this.reuse = reuse;
+  }
+
+  public static ReuseSparkContext no() {
+    return new ReuseSparkContext(false);
+  }
+
+  public static ReuseSparkContext yes() {
+    return new ReuseSparkContext(true);
+  }
+
+  @Override
+  protected void before() throws Throwable {
+    System.setProperty(SparkContextFactory.TEST_REUSE_SPARK_CONTEXT, Boolean.toString(reuse));
+  }
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/96d373fe/runners/spark/src/test/java/org/apache/beam/runners/spark/WatermarkTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/WatermarkTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/WatermarkTest.java
deleted file mode 100644
index 0a0abf9..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/WatermarkTest.java
+++ /dev/null
@@ -1,231 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark;
-
-import static org.hamcrest.Matchers.containsInAnyOrder;
-import static org.hamcrest.core.IsEqual.equalTo;
-import static org.junit.Assert.assertThat;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import org.apache.beam.runners.spark.io.CreateStream;
-import org.apache.beam.runners.spark.translation.SparkContextFactory;
-import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
-import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
-import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.coders.VarIntCoder;
-import org.apache.beam.sdk.options.PipelineOptionsFactory;
-import org.apache.beam.sdk.testing.RegexMatcher;
-import org.apache.beam.sdk.transforms.DoFn;
-import org.apache.beam.sdk.transforms.ParDo;
-import org.apache.spark.api.java.JavaSparkContext;
-import org.joda.time.Duration;
-import org.joda.time.Instant;
-import org.junit.Ignore;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.ExpectedException;
-
-
-/**
- * A test suite for the propagation of watermarks in the Spark runner.
- */
-public class WatermarkTest {
-
-  @Rule
-  public ClearWatermarksRule clearWatermarksRule = new ClearWatermarksRule();
-
-  @Rule
-  public ExpectedException thrown = ExpectedException.none();
-
-  @Rule
-  public ReuseSparkContext reuseContext = ReuseSparkContext.yes();
-
-  private static final SparkPipelineOptions options =
-      PipelineOptionsFactory.create().as(SparkPipelineOptions.class);
-
-  private static final String INSTANT_PATTERN =
-      "[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}.[0-9]{3}Z";
-
-  @Test
-  public void testLowHighWatermarksAdvance() {
-    JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
-
-    Instant instant = new Instant(0);
-    // low == high.
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(5)),
-            instant.plus(Duration.millis(5)),
-            instant));
-    GlobalWatermarkHolder.advance(jsc);
-    // low < high.
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(10)),
-            instant.plus(Duration.millis(15)),
-            instant.plus(Duration.millis(100))));
-    GlobalWatermarkHolder.advance(jsc);
-
-    // assert watermarks in Broadcast.
-    SparkWatermarks currentWatermarks = GlobalWatermarkHolder.get().getValue().get(1);
-    assertThat(currentWatermarks.getLowWatermark(), equalTo(instant.plus(Duration.millis(10))));
-    assertThat(currentWatermarks.getHighWatermark(), equalTo(instant.plus(Duration.millis(15))));
-    assertThat(currentWatermarks.getSynchronizedProcessingTime(),
-        equalTo(instant.plus(Duration.millis(100))));
-
-    // assert illegal watermark advance.
-    thrown.expect(IllegalStateException.class);
-    thrown.expectMessage(
-        RegexMatcher.matches(
-            "Low watermark " + INSTANT_PATTERN + " cannot be later then high watermark "
-            + INSTANT_PATTERN));
-    // low > high -> not allowed!
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(25)),
-            instant.plus(Duration.millis(20)),
-            instant.plus(Duration.millis(200))));
-    GlobalWatermarkHolder.advance(jsc);
-  }
-
-  @Test
-  public void testSynchronizedTimeMonotonic() {
-    JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
-
-    Instant instant = new Instant(0);
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(5)),
-            instant.plus(Duration.millis(10)),
-            instant));
-    GlobalWatermarkHolder.advance(jsc);
-
-    thrown.expect(IllegalStateException.class);
-    thrown.expectMessage("Synchronized processing time must advance.");
-    // no actual advancement of watermarks - fine by Watermarks
-    // but not by synchronized processing time.
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(5)),
-            instant.plus(Duration.millis(10)),
-            instant));
-    GlobalWatermarkHolder.advance(jsc);
-  }
-
-  @Test
-  public void testMultiSource() {
-    JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
-
-    Instant instant = new Instant(0);
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(5)),
-            instant.plus(Duration.millis(10)),
-            instant));
-    GlobalWatermarkHolder.add(2,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(3)),
-            instant.plus(Duration.millis(6)),
-            instant));
-
-    GlobalWatermarkHolder.advance(jsc);
-
-    // assert watermarks for source 1.
-    SparkWatermarks watermarksForSource1 = GlobalWatermarkHolder.get().getValue().get(1);
-    assertThat(watermarksForSource1.getLowWatermark(), equalTo(instant.plus(Duration.millis(5))));
-    assertThat(watermarksForSource1.getHighWatermark(), equalTo(instant.plus(Duration.millis(10))));
-
-    // assert watermarks for source 2.
-    SparkWatermarks watermarksForSource2 = GlobalWatermarkHolder.get().getValue().get(2);
-    assertThat(watermarksForSource2.getLowWatermark(), equalTo(instant.plus(Duration.millis(3))));
-    assertThat(watermarksForSource2.getHighWatermark(), equalTo(instant.plus(Duration.millis(6))));
-  }
-
-  @Test
-  @Ignore(
-      "BEAM-1526 - This test is flaky, and is expected to be fixed in "
-          + "https://github.com/apache/beam/pull/2050")
-  public void testInDoFn() {
-    // because watermark advances onBatchCompleted.
-    Iterable<Integer> zeroBatch = Collections.emptyList();
-    Iterable<Integer> firstBatch = Collections.singletonList(1);
-    Iterable<Integer> secondBatch = Collections.singletonList(2);
-
-    Instant instant = new Instant(0);
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(5)),
-            instant.plus(Duration.millis(10)),
-            instant));
-    GlobalWatermarkHolder.add(1,
-        new SparkWatermarks(
-            instant.plus(Duration.millis(10)),
-            instant.plus(Duration.millis(15)),
-            instant.plus(options.getBatchIntervalMillis())));
-
-    options.setRunner(SparkRunner.class);
-    options.setStreaming(true);
-    options.setBatchIntervalMillis(500L);
-    Pipeline p = Pipeline.create(options);
-
-    CreateStream.QueuedValues<Integer> queueStream =
-        CreateStream.fromQueue(Arrays.asList(zeroBatch, firstBatch, secondBatch));
-
-    p.apply(queueStream).setCoder(VarIntCoder.of()).apply(ParDo.of(new WatermarksDoFn(1)));
-
-    p.run().waitUntilFinish(Duration.millis(options.getBatchIntervalMillis()).multipliedBy(3));
-
-    // this is a hacky way to assert but it will do until triggers are supported.
-    assertThat(
-        WatermarksDoFn.strings,
-        containsInAnyOrder(
-            "element: 1 lowWatermark: 5 highWatermark: 10 processingTime: 0",
-            "element: 2 lowWatermark: 10 highWatermark: 15 processingTime: 1000"));
-  }
-
-  private static class WatermarksDoFn extends DoFn<Integer, String> {
-    private final int sourceId;
-
-    static List<String> strings = new ArrayList<>();
-
-    private WatermarksDoFn(int sourceId) {
-      this.sourceId = sourceId;
-    }
-
-    @ProcessElement
-    public void processElement(ProcessContext c) {
-      if (GlobalWatermarkHolder.get() == null
-          || GlobalWatermarkHolder.get().getValue().get(sourceId) == null) {
-        // watermark not yet updated.
-        return;
-      }
-      SparkWatermarks sparkWatermarks = GlobalWatermarkHolder.get().getValue().get(sourceId);
-      Integer element = c.element();
-      String output =
-          "element: " + element
-          + " lowWatermark: " + sparkWatermarks.getLowWatermark().getMillis()
-          + " highWatermark: " + sparkWatermarks.getHighWatermark().getMillis()
-          + " processingTime: " + sparkWatermarks.getSynchronizedProcessingTime().getMillis();
-      strings.add(output);
-    }
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/96d373fe/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
new file mode 100644
index 0000000..0cb33ab
--- /dev/null
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
@@ -0,0 +1,385 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark.translation.streaming;
+
+import static org.hamcrest.Matchers.allOf;
+import static org.hamcrest.Matchers.greaterThanOrEqualTo;
+import static org.hamcrest.Matchers.lessThanOrEqualTo;
+import static org.junit.Assert.assertThat;
+
+import java.io.IOException;
+import java.io.Serializable;
+import org.apache.beam.runners.spark.ReuseSparkContextRule;
+import org.apache.beam.runners.spark.SparkPipelineOptions;
+import org.apache.beam.runners.spark.io.CreateStream;
+import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
+import org.apache.beam.sdk.Pipeline;
+import org.apache.beam.sdk.coders.StringUtf8Coder;
+import org.apache.beam.sdk.coders.VarIntCoder;
+import org.apache.beam.sdk.testing.PAssert;
+import org.apache.beam.sdk.transforms.Count;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.Flatten;
+import org.apache.beam.sdk.transforms.GroupByKey;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.transforms.SerializableFunction;
+import org.apache.beam.sdk.transforms.Sum;
+import org.apache.beam.sdk.transforms.Values;
+import org.apache.beam.sdk.transforms.WithKeys;
+import org.apache.beam.sdk.transforms.windowing.AfterPane;
+import org.apache.beam.sdk.transforms.windowing.AfterProcessingTime;
+import org.apache.beam.sdk.transforms.windowing.AfterWatermark;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.transforms.windowing.DefaultTrigger;
+import org.apache.beam.sdk.transforms.windowing.FixedWindows;
+import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
+import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
+import org.apache.beam.sdk.transforms.windowing.Never;
+import org.apache.beam.sdk.transforms.windowing.Window;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.TimestampedValue;
+import org.joda.time.Duration;
+import org.joda.time.Instant;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.junit.rules.TemporaryFolder;
+import org.junit.rules.TestName;
+
+
+/**
+ * A test suite to test Spark runner implementation of triggers and panes.
+ *
+ * <p>Since Spark is a micro-batch engine, and will process any test-sized input
+ * within the same (first) batch, it is important to make sure inputs are ingested across
+ * micro-batches using {@link org.apache.spark.streaming.dstream.QueueInputDStream}.
+ */
+public class CreateStreamTest implements Serializable {
+
+  @Rule
+  public transient TemporaryFolder checkpointParentDir = new TemporaryFolder();
+  @Rule
+  public transient SparkTestPipelineOptionsForStreaming commonOptions =
+      new SparkTestPipelineOptionsForStreaming();
+  @Rule
+  public transient ReuseSparkContextRule noContextResue = ReuseSparkContextRule.no();
+  @Rule
+  public transient TestName testName = new TestName();
+  @Rule
+  public transient ExpectedException thrown = ExpectedException.none();
+
+  @Test
+  public void testLateDataAccumulating() throws IOException {
+    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
+    Pipeline p = Pipeline.create(options);
+    options.setJobName(testName.getMethodName());
+    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+
+    Instant instant = new Instant(0);
+    CreateStream<TimestampedValue<Integer>> source =
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+            .nextBatch()
+            .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(6)))
+            .nextBatch(
+                TimestampedValue.of(1, instant),
+                TimestampedValue.of(2, instant),
+                TimestampedValue.of(3, instant))
+            .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(20)))
+            // These elements are late but within the allowed lateness
+            .nextBatch(
+                TimestampedValue.of(4, instant),
+                TimestampedValue.of(5, instant))
+            // These elements are droppably late
+            .advanceNextBatchWatermarkToInfinity()
+            .nextBatch(
+                TimestampedValue.of(-1, instant),
+                TimestampedValue.of(-2, instant),
+                TimestampedValue.of(-3, instant));
+
+    PCollection<Integer> windowed = p
+        .apply(source).setCoder(TimestampedValue.TimestampedValueCoder.of(VarIntCoder.of()))
+        .apply(ParDo.of(new OnlyValue<Integer>()))
+        .apply(Window.<Integer>into(FixedWindows.of(Duration.standardMinutes(5))).triggering(
+            AfterWatermark.pastEndOfWindow()
+                .withEarlyFirings(AfterProcessingTime.pastFirstElementInPane()
+                    .plusDelayOf(Duration.standardMinutes(2)))
+                .withLateFirings(AfterPane.elementCountAtLeast(1)))
+            .accumulatingFiredPanes()
+            .withAllowedLateness(Duration.standardMinutes(5), Window.ClosingBehavior.FIRE_ALWAYS));
+    PCollection<Integer> triggered = windowed.apply(WithKeys.<Integer, Integer>of(1))
+        .apply(GroupByKey.<Integer, Integer>create())
+        .apply(Values.<Iterable<Integer>>create())
+        .apply(Flatten.<Integer>iterables());
+    PCollection<Long> count = windowed.apply(Count.<Integer>globally().withoutDefaults());
+    PCollection<Integer> sum = windowed.apply(Sum.integersGlobally().withoutDefaults());
+
+    IntervalWindow window = new IntervalWindow(instant, instant.plus(Duration.standardMinutes(5L)));
+    PAssert.that(triggered)
+        .inFinalPane(window)
+        .containsInAnyOrder(1, 2, 3, 4, 5);
+    PAssert.that(triggered)
+        .inOnTimePane(window)
+        .containsInAnyOrder(1, 2, 3);
+    PAssert.that(count)
+        .inWindow(window)
+        .satisfies(new SerializableFunction<Iterable<Long>, Void>() {
+          @Override
+          public Void apply(Iterable<Long> input) {
+            for (Long count : input) {
+              assertThat(count, allOf(greaterThanOrEqualTo(3L), lessThanOrEqualTo(5L)));
+            }
+            return null;
+          }
+        });
+    PAssert.that(sum)
+        .inWindow(window)
+        .satisfies(new SerializableFunction<Iterable<Integer>, Void>() {
+          @Override
+          public Void apply(Iterable<Integer> input) {
+            for (Integer sum : input) {
+              assertThat(sum, allOf(greaterThanOrEqualTo(6), lessThanOrEqualTo(15)));
+            }
+            return null;
+          }
+        });
+
+    p.run();
+  }
+
+//  @Test
+//  @Category({NeedsRunner.class, UsesTestStream.class})
+//  public void testProcessingTimeTrigger() {
+//    TestStream<Long> source = TestStream.create(VarLongCoder.of())
+//            .addElements(TimestampedValue.of(1L, new Instant(1000L)),
+//                    TimestampedValue.of(2L, new Instant(2000L)))
+//            .advanceProcessingTime(Duration.standardMinutes(12))
+//            .addElements(TimestampedValue.of(3L, new Instant(3000L)))
+//            .advanceProcessingTime(Duration.standardMinutes(6))
+//            .advanceWatermarkToInfinity();
+//
+//    PCollection<Long> sum = p.apply(source)
+//            .apply(Window.<Long>triggering(AfterWatermark.pastEndOfWindow()
+//                    .withEarlyFirings(AfterProcessingTime.pastFirstElementInPane()
+//                            .plusDelayOf(Duration.standardMinutes(5)))).accumulatingFiredPanes()
+//                    .withAllowedLateness(Duration.ZERO))
+//            .apply(Sum.longsGlobally());
+//
+//    PAssert.that(sum).inEarlyGlobalWindowPanes().containsInAnyOrder(3L, 6L);
+//
+//    p.run();
+//  }
+
+  @Test
+  public void testDiscardingMode() throws IOException {
+    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
+    Pipeline p = Pipeline.create(options);
+    options.setJobName(testName.getMethodName());
+    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+
+    CreateStream<TimestampedValue<String>> source =
+        CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+            .nextBatch(
+                TimestampedValue.of("firstPane", new Instant(100)),
+                TimestampedValue.of("alsoFirstPane", new Instant(200)))
+            .advanceWatermarkForNextBatch(new Instant(1001L))
+            .nextBatch(
+                TimestampedValue.of("onTimePane", new Instant(500)))
+            .advanceNextBatchWatermarkToInfinity()
+            .nextBatch(
+                TimestampedValue.of("finalLatePane", new Instant(750)),
+                TimestampedValue.of("alsoFinalLatePane", new Instant(250)));
+
+    FixedWindows windowFn = FixedWindows.of(Duration.millis(1000L));
+    Duration allowedLateness = Duration.millis(5000L);
+    PCollection<String> values =
+        p.apply(source).setCoder(TimestampedValue.TimestampedValueCoder.of(StringUtf8Coder.of()))
+            .apply(ParDo.of(new OnlyValue<String>()))
+            .apply(
+                Window.<String>into(windowFn)
+                    .triggering(
+                        AfterWatermark.pastEndOfWindow()
+                            .withEarlyFirings(AfterPane.elementCountAtLeast(2))
+                            .withLateFirings(Never.ever()))
+                    .discardingFiredPanes()
+                    .withAllowedLateness(allowedLateness))
+            .apply(WithKeys.<Integer, String>of(1))
+            .apply(GroupByKey.<Integer, String>create())
+            .apply(Values.<Iterable<String>>create())
+            .apply(Flatten.<String>iterables());
+
+    IntervalWindow window = windowFn.assignWindow(new Instant(100));
+    PAssert.that(values)
+        .inWindow(window)
+        .containsInAnyOrder(
+            "firstPane", "alsoFirstPane", "onTimePane", "finalLatePane", "alsoFinalLatePane");
+    PAssert.that(values)
+        .inCombinedNonLatePanes(window)
+        .containsInAnyOrder("firstPane", "alsoFirstPane", "onTimePane");
+    PAssert.that(values).inOnTimePane(window).containsInAnyOrder("onTimePane");
+    PAssert.that(values)
+        .inFinalPane(window)
+        .containsInAnyOrder("finalLatePane", "alsoFinalLatePane");
+
+    p.run();
+  }
+
+  @Test
+  public void testFirstElementLate() throws IOException {
+    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
+    Pipeline p = Pipeline.create(options);
+    options.setJobName(testName.getMethodName());
+    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+
+    Instant lateElementTimestamp = new Instant(-1_000_000);
+    CreateStream<TimestampedValue<String>> source =
+        CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+            .nextBatch()
+            .advanceWatermarkForNextBatch(new Instant(-1_000_000))
+            .nextBatch(
+                TimestampedValue.of("late", lateElementTimestamp),
+                TimestampedValue.of("onTime", new Instant(100)))
+            .advanceNextBatchWatermarkToInfinity();
+
+    FixedWindows windowFn = FixedWindows.of(Duration.millis(1000L));
+    Duration allowedLateness = Duration.millis(5000L);
+    PCollection<String> values = p.apply(source)
+            .setCoder(TimestampedValue.TimestampedValueCoder.of(StringUtf8Coder.of()))
+        .apply(ParDo.of(new OnlyValue<String>()))
+        .apply(Window.<String>into(windowFn).triggering(DefaultTrigger.of())
+            .discardingFiredPanes()
+            .withAllowedLateness(allowedLateness))
+        .apply(WithKeys.<Integer, String>of(1))
+        .apply(GroupByKey.<Integer, String>create())
+        .apply(Values.<Iterable<String>>create())
+        .apply(Flatten.<String>iterables());
+
+    //TODO: empty panes do not emmit anything so Spark won't evaluate an "empty" assertion.
+//    PAssert.that(values).inWindow(windowFn.assignWindow(lateElementTimestamp)).empty();
+    PAssert.that(values)
+        .inWindow(windowFn.assignWindow(new Instant(100)))
+        .containsInAnyOrder("onTime");
+
+    p.run();
+  }
+
+  @Test
+  public void testElementsAtAlmostPositiveInfinity() throws IOException {
+    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
+    Pipeline p = Pipeline.create(options);
+    options.setJobName(testName.getMethodName());
+    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+
+    Instant endOfGlobalWindow = GlobalWindow.INSTANCE.maxTimestamp();
+    CreateStream<TimestampedValue<String>> source =
+        CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+            .nextBatch(
+                TimestampedValue.of("foo", endOfGlobalWindow),
+                TimestampedValue.of("bar", endOfGlobalWindow))
+            .advanceNextBatchWatermarkToInfinity();
+
+    FixedWindows windows = FixedWindows.of(Duration.standardHours(6));
+    PCollection<String> windowedValues = p.apply(source)
+            .setCoder(TimestampedValue.TimestampedValueCoder.of(StringUtf8Coder.of()))
+        .apply(ParDo.of(new OnlyValue<String>()))
+        .apply(Window.<String>into(windows))
+        .apply(WithKeys.<Integer, String>of(1))
+        .apply(GroupByKey.<Integer, String>create())
+        .apply(Values.<Iterable<String>>create())
+        .apply(Flatten.<String>iterables());
+
+    PAssert.that(windowedValues)
+        .inWindow(windows.assignWindow(GlobalWindow.INSTANCE.maxTimestamp()))
+        .containsInAnyOrder("foo", "bar");
+    p.run();
+  }
+
+//  @Test
+//  public void testMultipleStreams() throws IOException {
+//    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
+//    Pipeline p = Pipeline.create(options);
+//    options.setJobName(testName.getMethodName());
+//    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+//
+//    CreateStream<String> source =
+//        CreateStream.<String>withBatchInterval(batchDuration)
+//            .nextBatch("foo", "bar").advanceWatermarkForNextBatch(new Instant(100))
+//            .nextBatch().advanceNextBatchWatermarkToInfinity();
+//
+////    CreateStream<Integer> other =
+////        CreateStream.<Integer>withBatchInterval(batchDuration)
+////            .nextBatch(1, 2, 3, 4)
+////            .advanceNextBatchWatermarkToInfinity();
+//
+//    PCollection<String> createStrings =
+//        p.apply("CreateStrings", source).setCoder(StringUtf8Coder.of())
+//            .apply("WindowStrings",
+//                Window.<String>triggering(AfterPane.elementCountAtLeast(2))
+//                    .withAllowedLateness(Duration.ZERO)
+//                    .accumulatingFiredPanes());
+//    PAssert.that(createStrings).containsInAnyOrder("foo", "bar");
+////    PCollection<Integer> createInts =
+////        p.apply("CreateInts", other).setCoder(VarIntCoder.of())
+////            .apply("WindowInts",
+////                Window.<Integer>triggering(AfterPane.elementCountAtLeast(4))
+////                    .withAllowedLateness(Duration.ZERO)
+////                    .accumulatingFiredPanes());
+////    PAssert.that(createInts).containsInAnyOrder(1, 2, 3, 4);
+//
+//    p.run();
+//  }
+
+  @Test
+  public void testElementAtPositiveInfinityThrows() {
+    Duration batchDuration = Duration.millis(commonOptions.getOptions().getBatchIntervalMillis());
+    CreateStream<TimestampedValue<Integer>> source =
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+            .nextBatch(TimestampedValue.of(-1, BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L)));
+    thrown.expect(IllegalArgumentException.class);
+    source.nextBatch(TimestampedValue.of(1, BoundedWindow.TIMESTAMP_MAX_VALUE));
+  }
+
+  @Test
+  public void testAdvanceWatermarkNonMonotonicThrows() {
+    Duration batchDuration = Duration.millis(commonOptions.getOptions().getBatchIntervalMillis());
+    CreateStream<Integer> source =
+        CreateStream.<Integer>withBatchInterval(batchDuration)
+            .advanceWatermarkForNextBatch(new Instant(0L));
+    thrown.expect(IllegalArgumentException.class);
+    source.advanceWatermarkForNextBatch(new Instant(-1L));
+  }
+
+  @Test
+  public void testAdvanceWatermarkEqualToPositiveInfinityThrows() {
+    Duration batchDuration = Duration.millis(commonOptions.getOptions().getBatchIntervalMillis());
+    CreateStream<Integer> source =
+        CreateStream.<Integer>withBatchInterval(batchDuration)
+            .advanceWatermarkForNextBatch(BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L));
+    thrown.expect(IllegalArgumentException.class);
+    source.advanceWatermarkForNextBatch(BoundedWindow.TIMESTAMP_MAX_VALUE);
+  }
+
+  private static class OnlyValue<T> extends DoFn<TimestampedValue<T>, T> {
+
+    OnlyValue() { }
+
+    @ProcessElement
+    public void onlyValue(ProcessContext c) {
+      c.outputWithTimestamp(c.element().getValue(), c.element().getTimestamp());
+    }
+  }
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/96d373fe/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
index 62ee672..e307363 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
@@ -17,60 +17,70 @@
  */
 package org.apache.beam.runners.spark.translation.streaming;
 
-import static org.apache.beam.sdk.metrics.MetricMatchers.attemptedMetricsResult;
+import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.Matchers.equalTo;
-import static org.hamcrest.Matchers.hasItem;
+import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertThat;
 
-import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.util.concurrent.Uninterruptibles;
 import java.io.IOException;
-import java.util.Arrays;
 import java.util.Collections;
-import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 import java.util.concurrent.TimeUnit;
+import org.apache.beam.runners.spark.ReuseSparkContextRule;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
 import org.apache.beam.runners.spark.SparkPipelineResult;
-import org.apache.beam.runners.spark.aggregators.ClearAggregatorsRule;
+import org.apache.beam.runners.spark.SparkRunner;
+import org.apache.beam.runners.spark.aggregators.AccumulatorSingleton;
+import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.spark.translation.streaming.utils.EmbeddedKafkaCluster;
-import org.apache.beam.runners.spark.translation.streaming.utils.PAssertStreaming;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
 import org.apache.beam.sdk.Pipeline;
+import org.apache.beam.sdk.coders.InstantCoder;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
 import org.apache.beam.sdk.io.kafka.KafkaIO;
-import org.apache.beam.sdk.metrics.Counter;
-import org.apache.beam.sdk.metrics.MetricNameFilter;
-import org.apache.beam.sdk.metrics.Metrics;
-import org.apache.beam.sdk.metrics.MetricsFilter;
+import org.apache.beam.sdk.options.PipelineOptionsFactory;
+import org.apache.beam.sdk.testing.PAssert;
 import org.apache.beam.sdk.transforms.Aggregator;
-import org.apache.beam.sdk.transforms.Create;
 import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.GroupByKey;
+import org.apache.beam.sdk.transforms.Keys;
+import org.apache.beam.sdk.transforms.PTransform;
 import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.transforms.SerializableFunction;
 import org.apache.beam.sdk.transforms.Sum;
-import org.apache.beam.sdk.transforms.View;
+import org.apache.beam.sdk.transforms.Values;
+import org.apache.beam.sdk.transforms.WithKeys;
+import org.apache.beam.sdk.transforms.windowing.AfterWatermark;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.transforms.windowing.FixedWindows;
 import org.apache.beam.sdk.transforms.windowing.Window;
 import org.apache.beam.sdk.values.KV;
 import org.apache.beam.sdk.values.PCollection;
-import org.apache.beam.sdk.values.PCollectionView;
+import org.apache.beam.sdk.values.PDone;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.apache.kafka.common.serialization.Serializer;
 import org.apache.kafka.common.serialization.StringSerializer;
 import org.joda.time.Duration;
+import org.joda.time.Instant;
 import org.junit.AfterClass;
-import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
+import org.junit.rules.TestName;
 
 
 /**
- * Test pipelines which are resumed from checkpoint.
+ * Tests DStream recovery from checkpoint.
+ *
+ * <p>Runs the pipeline reading from a Kafka backlog with a WM function that will move to infinity
+ * on a EOF signal.
+ * After resuming from checkpoint, a single output (guaranteed by the WM) is asserted, along with
+ * {@link Aggregator}s values that are expected to resume from previous count as well.
  */
 public class ResumeFromCheckpointStreamingTest {
   private static final EmbeddedKafkaCluster.EmbeddedZookeeper EMBEDDED_ZOOKEEPER =
@@ -78,142 +88,158 @@ public class ResumeFromCheckpointStreamingTest {
   private static final EmbeddedKafkaCluster EMBEDDED_KAFKA_CLUSTER =
       new EmbeddedKafkaCluster(EMBEDDED_ZOOKEEPER.getConnection(), new Properties());
   private static final String TOPIC = "kafka_beam_test_topic";
-  private static final Map<String, String> KAFKA_MESSAGES = ImmutableMap.of(
-      "k1", "v1", "k2", "v2", "k3", "v3", "k4", "v4"
-  );
-  private static final String[] EXPECTED = {"k1,v1", "k2,v2", "k3,v3", "k4,v4"};
-  private static final long EXPECTED_AGG_FIRST = 4L;
-  private static final long EXPECTED_COUNTER_FIRST = 4L;
-  private static final long EXPECTED_AGG_SECOND = 8L;
-  private static final long EXPECTED_COUNTER_SECOND = 8L;
 
   @Rule
-  public TemporaryFolder checkpointParentDir = new TemporaryFolder();
-
+  public TemporaryFolder tmpFolder = new TemporaryFolder();
   @Rule
-  public SparkTestPipelineOptionsForStreaming commonOptions =
-      new SparkTestPipelineOptionsForStreaming();
-
+  public ReuseSparkContextRule noContextResue = ReuseSparkContextRule.no();
   @Rule
-  public ClearAggregatorsRule clearAggregatorsRule = new ClearAggregatorsRule();
+  public transient TestName testName = new TestName();
 
   @BeforeClass
   public static void init() throws IOException {
     EMBEDDED_ZOOKEEPER.startup();
     EMBEDDED_KAFKA_CLUSTER.startup();
-    /// this test actually requires to NOT reuse the context but rather to stop it and start again
-    // from the checkpoint with a brand new context.
-    System.setProperty("beam.spark.test.reuseSparkContext", "false");
   }
 
-  private static void produce() {
+  private static void produce(Map<String, Instant> messages) {
     Properties producerProps = new Properties();
     producerProps.putAll(EMBEDDED_KAFKA_CLUSTER.getProps());
     producerProps.put("request.required.acks", 1);
     producerProps.put("bootstrap.servers", EMBEDDED_KAFKA_CLUSTER.getBrokerList());
     Serializer<String> stringSerializer = new StringSerializer();
-    try (@SuppressWarnings("unchecked") KafkaProducer<String, String> kafkaProducer =
-        new KafkaProducer(producerProps, stringSerializer, stringSerializer)) {
-          for (Map.Entry<String, String> en : KAFKA_MESSAGES.entrySet()) {
+    Serializer<Instant> instantSerializer = new Serializer<Instant>() {
+      @Override
+      public void configure(Map<String, ?> configs, boolean isKey) { }
+
+      @Override
+      public byte[] serialize(String topic, Instant data) {
+        return CoderHelpers.toByteArray(data, InstantCoder.of());
+      }
+
+      @Override
+      public void close() { }
+    };
+
+    try (@SuppressWarnings("unchecked") KafkaProducer<String, Instant> kafkaProducer =
+        new KafkaProducer(producerProps, stringSerializer, instantSerializer)) {
+          for (Map.Entry<String, Instant> en : messages.entrySet()) {
             kafkaProducer.send(new ProducerRecord<>(TOPIC, en.getKey(), en.getValue()));
           }
           kafkaProducer.close();
         }
   }
 
-  /**
-   * Tests DStream recovery from checkpoint - recreate the job and continue (from checkpoint).
-   * <p>Also tests Aggregator values, which should be restored upon recovery from checkpoint.</p>
-   */
   @Test
-  public void testRun() throws Exception {
-    Duration batchIntervalDuration = Duration.standardSeconds(5);
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    // provide a generous enough batch-interval to have everything fit in one micro-batch.
-    options.setBatchIntervalMillis(batchIntervalDuration.getMillis());
-    // provide a very generous read time bound, we rely on num records bound here.
-    options.setMinReadTimeMillis(batchIntervalDuration.minus(1).getMillis());
-    // bound the read on the number of messages - 1 topic of 4 messages.
-    options.setMaxRecordsPerBatch(4L);
-
-    // checkpoint after first (and only) interval.
-    options.setCheckpointDurationMillis(options.getBatchIntervalMillis());
-
-    MetricsFilter metricsFilter =
-        MetricsFilter.builder()
-            .addNameFilter(MetricNameFilter.inNamespace(ResumeFromCheckpointStreamingTest.class))
-            .build();
+  public void testWithResume() throws Exception {
+    SparkPipelineOptions options = PipelineOptionsFactory.create().as(SparkPipelineOptions.class);
+    options.setRunner(SparkRunner.class);
+    options.setCheckpointDir(tmpFolder.newFolder().toString());
+    options.setCheckpointDurationMillis(500L);
+    options.setJobName(testName.getMethodName());
+    options.setSparkMaster("local[*]");
+
+    // write to Kafka
+    produce(ImmutableMap.of(
+        "k1", new Instant(100),
+        "k2", new Instant(200),
+        "k3", new Instant(300),
+        "k4", new Instant(400)
+    ));
 
     // first run will read from Kafka backlog - "auto.offset.reset=smallest"
     SparkPipelineResult res = run(options);
+    res.waitUntilFinish(Duration.standardSeconds(2));
+    // assertions 1:
     long processedMessages1 = res.getAggregatorValue("processedMessages", Long.class);
-    assertThat(String.format("Expected %d processed messages count but "
-        + "found %d", EXPECTED_AGG_FIRST, processedMessages1), processedMessages1,
-            equalTo(EXPECTED_AGG_FIRST));
-    assertThat(res.metrics().queryMetrics(metricsFilter).counters(),
-        hasItem(attemptedMetricsResult(ResumeFromCheckpointStreamingTest.class.getName(),
-            "aCounter", "formatKV", EXPECTED_COUNTER_FIRST)));
+    assertThat(
+        String.format(
+            "Expected %d processed messages count but found %d", 4, processedMessages1),
+        processedMessages1,
+        equalTo(4L));
+
+    //--- between executions:
+
+    //- clear state.
+    AccumulatorSingleton.clear();
+    GlobalWatermarkHolder.clear();
+
+    //- write a bit more.
+    produce(ImmutableMap.of(
+        "k5", new Instant(499),
+        "EOF", new Instant(500) // to be dropped from [0, 500).
+    ));
 
     // recovery should resume from last read offset, and read the second batch of input.
     res = runAgain(options);
+    res.waitUntilFinish(Duration.standardSeconds(2));
+    // assertions 2:
     long processedMessages2 = res.getAggregatorValue("processedMessages", Long.class);
-    assertThat(String.format("Expected %d processed messages count but "
-        + "found %d", EXPECTED_AGG_SECOND, processedMessages2), processedMessages2,
-            equalTo(EXPECTED_AGG_SECOND));
-    assertThat(res.metrics().queryMetrics(metricsFilter).counters(),
-        hasItem(attemptedMetricsResult(ResumeFromCheckpointStreamingTest.class.getName(),
-            "aCounter", "formatKV", EXPECTED_COUNTER_SECOND)));
+    int successAssertions = res.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
+    assertThat(
+        String.format("Expected %d processed messages count but found %d", 1, processedMessages2),
+        processedMessages2,
+        equalTo(5L));
+    res.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
+    assertThat(
+        String.format(
+            "Expected %d successful assertions, but found %d.", 1, successAssertions),
+            successAssertions,
+            is(1));
+    // validate assertion didn't fail.
+    int failedAssertions = res.getAggregatorValue(PAssert.FAILURE_COUNTER, Integer.class);
+    assertThat(
+        String.format("Found %d failed assertions.", failedAssertions),
+        failedAssertions,
+        is(0));
+
   }
 
   private SparkPipelineResult runAgain(SparkPipelineOptions options) {
-    clearAggregatorsRule.clearNamedAggregators();
     // sleep before next run.
-    Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS);
+    Uninterruptibles.sleepUninterruptibly(10, TimeUnit.MILLISECONDS);
     return run(options);
   }
 
   private static SparkPipelineResult run(SparkPipelineOptions options) {
-    // write to Kafka
-    produce();
-    Map<String, Object> consumerProps = ImmutableMap.<String, Object>of(
-        "auto.offset.reset", "earliest"
-    );
-
-    KafkaIO.Read<String, String> read = KafkaIO.<String, String>read()
+    KafkaIO.Read<String, Instant> read = KafkaIO.<String, Instant>read()
         .withBootstrapServers(EMBEDDED_KAFKA_CLUSTER.getBrokerList())
         .withTopics(Collections.singletonList(TOPIC))
         .withKeyCoder(StringUtf8Coder.of())
-        .withValueCoder(StringUtf8Coder.of())
-        .updateConsumerProperties(consumerProps);
-
-    Duration windowDuration = new Duration(options.getBatchIntervalMillis());
+        .withValueCoder(InstantCoder.of())
+        .updateConsumerProperties(ImmutableMap.<String, Object>of("auto.offset.reset", "earliest"))
+        .withTimestampFn(new SerializableFunction<KV<String, Instant>, Instant>() {
+          @Override
+          public Instant apply(KV<String, Instant> kv) {
+            return kv.getValue();
+          }
+        }).withWatermarkFn(new SerializableFunction<KV<String, Instant>, Instant>() {
+          @Override
+          public Instant apply(KV<String, Instant> kv) {
+            // at EOF move WM to infinity.
+            String key = kv.getKey();
+            Instant instant = kv.getValue();
+            return key.equals("EOF") ? BoundedWindow.TIMESTAMP_MAX_VALUE : instant;
+          }
+        });
 
     Pipeline p = Pipeline.create(options);
 
-    PCollection<String> expectedCol =
-        p.apply(Create.of(ImmutableList.copyOf(EXPECTED)).withCoder(StringUtf8Coder.of()));
-    final PCollectionView<List<String>> expectedView = expectedCol.apply(View.<String>asList());
-
-    PCollection<String> formattedKV =
-        p.apply(read.withoutMetadata())
-            .apply("formatKV", ParDo.of(new DoFn<KV<String, String>, KV<String, String>>() {
-              Counter counter =
-                  Metrics.counter(ResumeFromCheckpointStreamingTest.class, "aCounter");
-
-              @ProcessElement
-              public void process(ProcessContext c) {
-                // Check side input is passed correctly also after resuming from checkpoint
-                Assert.assertEquals(c.sideInput(expectedView), Arrays.asList(EXPECTED));
-                counter.inc();
-                c.output(c.element());
-              }
-            }).withSideInputs(expectedView))
-            .apply(Window.<KV<String, String>>into(FixedWindows.of(windowDuration)))
-            .apply(ParDo.of(new FormatAsText()));
-
-    // graceful shutdown will make sure first batch (at least) will finish.
-    Duration timeout = Duration.standardSeconds(1L);
-    return PAssertStreaming.runAndAssertContents(p, formattedKV, EXPECTED, timeout);
+    PCollection<Iterable<String>> grouped = p
+        .apply(read.withoutMetadata())
+        .apply(Keys.<String>create())
+        .apply(ParDo.of(new EOFShallNotPassFn()))
+        .apply(Window.<String>into(FixedWindows.of(Duration.millis(500)))
+            .triggering(AfterWatermark.pastEndOfWindow())
+                .accumulatingFiredPanes()
+                .withAllowedLateness(Duration.ZERO))
+        .apply(WithKeys.<Integer, String>of(1))
+        .apply(GroupByKey.<Integer, String>create())
+        .apply(Values.<Iterable<String>>create());
+
+    grouped.apply(new PAssertWithoutFlatten<>("k1", "k2", "k3", "k4", "k5"));
+
+    return (SparkPipelineResult) p.run();
   }
 
   @AfterClass
@@ -222,16 +248,60 @@ public class ResumeFromCheckpointStreamingTest {
     EMBEDDED_ZOOKEEPER.shutdown();
   }
 
-  private static class FormatAsText extends DoFn<KV<String, String>, String> {
-
+  /** A pass-through fn that prevents EOF event from passing. */
+  private static class EOFShallNotPassFn extends DoFn<String, String> {
     private final Aggregator<Long, Long> aggregator =
         createAggregator("processedMessages", Sum.ofLongs());
 
     @ProcessElement
     public void process(ProcessContext c) {
-      aggregator.addValue(1L);
-      String formatted = c.element().getKey() + "," + c.element().getValue();
-      c.output(formatted);
+      String element = c.element();
+      if (!element.equals("EOF")) {
+        aggregator.addValue(1L);
+        c.output(c.element());
+      }
+    }
+  }
+
+  /**
+   * A custom PAssert that avoids using {@link org.apache.beam.sdk.transforms.Flatten}
+   * until BEAM-1444 is resolved.
+   */
+  private static class PAssertWithoutFlatten<T>
+      extends PTransform<PCollection<Iterable<T>>, PDone> {
+    private final T[] expected;
+
+    private PAssertWithoutFlatten(T... expected) {
+      this.expected = expected;
+    }
+
+    @Override
+    public PDone expand(PCollection<Iterable<T>> input) {
+      input.apply(ParDo.of(new AssertDoFn<>(expected)));
+      return PDone.in(input.getPipeline());
+    }
+
+    private static class AssertDoFn<T> extends DoFn<Iterable<T>, Void> {
+      private final Aggregator<Integer, Integer> success =
+          createAggregator(PAssert.SUCCESS_COUNTER, Sum.ofIntegers());
+      private final Aggregator<Integer, Integer> failure =
+          createAggregator(PAssert.FAILURE_COUNTER, Sum.ofIntegers());
+      private final T[] expected;
+
+      AssertDoFn(T[] expected) {
+        this.expected = expected;
+      }
+
+      @ProcessElement
+      public void processElement(ProcessContext c) throws Exception {
+        try {
+          assertThat(c.element(), containsInAnyOrder(expected));
+          success.addValue(1);
+        } catch (Throwable t) {
+          failure.addValue(1);
+          throw t;
+        }
+      }
     }
   }
 


[04/23] beam git commit: Use TestSparkRunner in tests.

Posted by am...@apache.org.
Use TestSparkRunner in tests.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/2bcd40c2
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/2bcd40c2
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/2bcd40c2

Branch: refs/heads/master
Commit: 2bcd40c206d6b615135375276b249364fedf32af
Parents: c25a02f
Author: Sela <an...@paypal.com>
Authored: Sat Feb 18 22:10:50 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:59 2017 +0200

----------------------------------------------------------------------
 .../beam/runners/spark/TestSparkRunner.java     | 92 ++++++++++++--------
 .../utils/SparkTestPipelineOptions.java         |  4 +-
 .../SparkTestPipelineOptionsForStreaming.java   | 11 +++
 3 files changed, 69 insertions(+), 38 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/2bcd40c2/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
index 8b8f9ba..24bc038 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
@@ -21,12 +21,12 @@ package org.apache.beam.runners.spark;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.is;
 
+import java.io.File;
+import java.io.IOException;
 import org.apache.beam.runners.core.UnboundedReadFromBoundedSource;
-import org.apache.beam.runners.spark.aggregators.AggregatorsAccumulator;
-import org.apache.beam.runners.spark.metrics.SparkMetricsContainer;
+import org.apache.beam.runners.spark.aggregators.AccumulatorSingleton;
 import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
 import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.PipelineResult.State;
 import org.apache.beam.sdk.io.BoundedReadFromUnboundedSource;
 import org.apache.beam.sdk.options.PipelineOptions;
 import org.apache.beam.sdk.options.PipelineOptionsValidator;
@@ -40,6 +40,10 @@ import org.apache.beam.sdk.values.PBegin;
 import org.apache.beam.sdk.values.PCollection;
 import org.apache.beam.sdk.values.PInput;
 import org.apache.beam.sdk.values.POutput;
+import org.apache.commons.io.FileUtils;
+import org.joda.time.Duration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 /**
@@ -65,6 +69,8 @@ import org.apache.beam.sdk.values.POutput;
  */
 public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
 
+  private static final Logger LOG = LoggerFactory.getLogger(TestSparkRunner.class);
+
   private SparkRunner delegate;
   private boolean isForceStreaming;
   private int expectedNumberOfAssertions = 0;
@@ -87,7 +93,7 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
   @SuppressWarnings("unchecked")
   @Override
   public <OutputT extends POutput, InputT extends PInput> OutputT apply(
-          PTransform<InputT, OutputT> transform, InputT input) {
+      PTransform<InputT, OutputT> transform, InputT input) {
     // if the pipeline forces execution as a streaming pipeline,
     // and the source is an adapted unbounded source (as bounded),
     // read it as unbounded source via UnboundedReadFromBoundedSource.
@@ -108,38 +114,52 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
 
   @Override
   public SparkPipelineResult run(Pipeline pipeline) {
-    // clear state of Aggregators, Metrics and Watermarks if exists.
-    AggregatorsAccumulator.clear();
-    SparkMetricsContainer.clear();
-    GlobalWatermarkHolder.clear();
-
-    TestPipelineOptions testPipelineOptions = pipeline.getOptions().as(TestPipelineOptions.class);
-    SparkPipelineResult result = delegate.run(pipeline);
-    result.waitUntilFinish();
-
-
-    // make sure the test pipeline finished successfully.
-    State resultState = result.getState();
-    assertThat(
-        String.format("Test pipeline result state was %s instead of %s", resultState, State.DONE),
-        resultState,
-        is(State.DONE));
-    assertThat(result, testPipelineOptions.getOnCreateMatcher());
-    assertThat(result, testPipelineOptions.getOnSuccessMatcher());
-
-    // if the pipeline was executed in streaming mode, validate aggregators.
-    if (isForceStreaming) {
-      // validate assertion succeeded (at least once).
-      int success = result.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
-      assertThat(
-          String.format(
-              "Expected %d successful assertions, but found %d.",
-              expectedNumberOfAssertions, success),
-          success,
-          is(expectedNumberOfAssertions));
-      // validate assertion didn't fail.
-      int failure = result.getAggregatorValue(PAssert.FAILURE_COUNTER, Integer.class);
-      assertThat("Failure aggregator should be zero.", failure, is(0));
+    SparkPipelineOptions sparkOptions = pipeline.getOptions().as(SparkPipelineOptions.class);
+    long timeout = sparkOptions.getForcedTimeout();
+    SparkPipelineResult result = null;
+    try {
+      // clear state of Accumulators and Aggregators.
+      AccumulatorSingleton.clear();
+      GlobalWatermarkHolder.clear();
+
+      TestPipelineOptions testPipelineOptions = pipeline.getOptions().as(TestPipelineOptions.class);
+      LOG.info("About to run test pipeline " + sparkOptions.getJobName());
+      result = delegate.run(pipeline);
+      result.waitUntilFinish(Duration.millis(timeout));
+
+      assertThat(result, testPipelineOptions.getOnCreateMatcher());
+      assertThat(result, testPipelineOptions.getOnSuccessMatcher());
+
+      // if the pipeline was executed in streaming mode, validate aggregators.
+      if (isForceStreaming) {
+        // validate assertion succeeded (at least once).
+        int successAssertions = result.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
+        assertThat(
+            String.format(
+                "Expected %d successful assertions, but found %d.",
+                expectedNumberOfAssertions, successAssertions),
+            successAssertions,
+            is(expectedNumberOfAssertions));
+        // validate assertion didn't fail.
+        int failedAssertions = result.getAggregatorValue(PAssert.FAILURE_COUNTER, Integer.class);
+        assertThat(
+            String.format("Found %d failed assertions.", failedAssertions),
+            failedAssertions,
+            is(0));
+
+        LOG.info(
+            String.format(
+                "Successfully asserted pipeline %s with %d successful assertions.",
+                sparkOptions.getJobName(),
+                successAssertions));
+      }
+    } finally {
+      try {
+        // cleanup checkpoint dir.
+        FileUtils.deleteDirectory(new File(sparkOptions.getCheckpointDir()));
+      } catch (IOException e) {
+        throw new RuntimeException("Failed to clear checkpoint tmp dir.", e);
+      }
     }
     return result;
   }

http://git-wip-us.apache.org/repos/asf/beam/blob/2bcd40c2/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java
index 2da9888..efc17d3 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java
@@ -18,7 +18,7 @@
 package org.apache.beam.runners.spark.translation.streaming.utils;
 
 import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.apache.beam.runners.spark.SparkRunner;
+import org.apache.beam.runners.spark.TestSparkRunner;
 import org.apache.beam.sdk.options.PipelineOptionsFactory;
 import org.junit.rules.ExternalResource;
 
@@ -32,7 +32,7 @@ public class SparkTestPipelineOptions extends ExternalResource {
 
   @Override
   protected void before() throws Throwable {
-    options.setRunner(SparkRunner.class);
+    options.setRunner(TestSparkRunner.class);
     options.setEnableSparkMetricSinks(false);
   }
 

http://git-wip-us.apache.org/repos/asf/beam/blob/2bcd40c2/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java
index 28f6d5d..dd3e4c8 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java
@@ -20,6 +20,7 @@ package org.apache.beam.runners.spark.translation.streaming.utils;
 
 import java.io.IOException;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
+import org.joda.time.Duration;
 import org.junit.rules.TemporaryFolder;
 
 
@@ -28,10 +29,20 @@ import org.junit.rules.TemporaryFolder;
  */
 public class SparkTestPipelineOptionsForStreaming extends SparkTestPipelineOptions {
 
+  private static final int DEFAULT_NUMBER_OF_BATCHES_TIMEOUT = 5;
+
   public SparkPipelineOptions withTmpCheckpointDir(TemporaryFolder parent)
       throws IOException {
     // tests use JUnit's TemporaryFolder path in the form of: /.../junit/...
     options.setCheckpointDir(parent.newFolder(options.getJobName()).toURI().toURL().toString());
+    options.setForceStreaming(true);
+    // set the default timeout to DEFAULT_NUMBER_OF_BATCHES_TIMEOUT x batchDuration
+    // to allow pipelines to finish.
+    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+    // set the checkpoint duration to match interval.
+    options.setCheckpointDurationMillis(batchDuration.getMillis());
+    long forcedTimeout = batchDuration.multipliedBy(DEFAULT_NUMBER_OF_BATCHES_TIMEOUT).getMillis();
+    options.setForcedTimeout(forcedTimeout);
     return options;
   }
 }


[05/23] beam git commit: Refactor translators according to new GroupAlsoByWindow implemenation for the Spark runnner.

Posted by am...@apache.org.
Refactor translators according to new GroupAlsoByWindow implemenation for the Spark runnner.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/96abe4f0
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/96abe4f0
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/96abe4f0

Branch: refs/heads/master
Commit: 96abe4f08be12ac10dac39b55b8f8319a227b1ea
Parents: 8c37970
Author: Sela <an...@paypal.com>
Authored: Fri Feb 17 01:19:23 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:59 2017 +0200

----------------------------------------------------------------------
 .../SparkGroupAlsoByWindowViaWindowSet.java     |  14 +-
 .../spark/stateful/SparkStateInternals.java     |   4 +-
 .../spark/stateful/SparkTimerInternals.java     |   6 +-
 .../translation/GroupCombineFunctions.java      | 237 ++++++------------
 .../spark/translation/TransformTranslator.java  | 238 +++++++++++++------
 .../spark/translation/TranslationUtils.java     |  22 +-
 .../streaming/StreamingTransformTranslator.java | 163 ++++---------
 .../translation/streaming/UnboundedDataset.java |  12 +-
 .../beam/runners/spark/util/LateDataUtils.java  |   2 +-
 .../spark/util/UnsupportedSideInputReader.java  |   2 +-
 .../streaming/TrackStreamingSourcesTest.java    |   2 +-
 11 files changed, 314 insertions(+), 388 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
index 7902d7c..2fb4100 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
@@ -17,8 +17,8 @@
  */
 package org.apache.beam.runners.spark.stateful;
 
-import com.google.common.collect.Table;
 import com.google.common.collect.AbstractIterator;
+import com.google.common.collect.Table;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -84,7 +84,8 @@ import scala.runtime.AbstractFunction1;
  * in the following steps.
  */
 public class SparkGroupAlsoByWindowViaWindowSet {
-  private static final Logger LOG = LoggerFactory.getLogger(SparkGroupAlsoByWindowViaWindowSet.class);
+  private static final Logger LOG = LoggerFactory.getLogger(
+      SparkGroupAlsoByWindowViaWindowSet.class);
 
   /**
    * A helper class that is essentially a {@link Serializable} {@link AbstractFunction1}.
@@ -101,7 +102,7 @@ public class SparkGroupAlsoByWindowViaWindowSet {
           final SparkRuntimeContext runtimeContext,
           final List<Integer> sourceIds) {
 
-    Long checkpointDuration =
+    long checkpointDurationMillis =
         runtimeContext.getPipelineOptions().as(SparkPipelineOptions.class)
             .getCheckpointDurationMillis();
 
@@ -271,8 +272,11 @@ public class SparkGroupAlsoByWindowViaWindowSet {
         return scala.collection.JavaConversions.asScalaIterator(outIter);
       }
     }, partitioner, true, JavaSparkContext$.MODULE$.<Tuple2<StateAndTimers,
-        List<WindowedValue<KV<K, Iterable<InputT>>>>>>fakeClassTag())
-            .checkpoint(new Duration(checkpointDuration));
+        List<WindowedValue<KV<K, Iterable<InputT>>>>>>fakeClassTag());
+
+    if (checkpointDurationMillis > 0) {
+      firedStream.checkpoint(new Duration(checkpointDurationMillis));
+    }
 
     // go back to Java now.
     JavaPairDStream<K, Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
index e628d31..93b1f63 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
@@ -22,11 +22,11 @@ import com.google.common.collect.Table;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.core.StateInternals;
 import org.apache.beam.runners.core.StateNamespace;
 import org.apache.beam.runners.core.StateTag;
 import org.apache.beam.runners.core.StateTag.StateBinder;
+import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.InstantCoder;
 import org.apache.beam.sdk.coders.ListCoder;
@@ -399,4 +399,4 @@ class SparkStateInternals<K> implements StateInternals<K> {
       };
     }
   }
-}
\ No newline at end of file
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
index 65225c5..4072240 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
@@ -27,9 +27,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import javax.annotation.Nullable;
-import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
 import org.apache.beam.runners.core.StateNamespace;
 import org.apache.beam.runners.core.TimerInternals;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.util.TimeDomain;
 import org.apache.spark.broadcast.Broadcast;
@@ -145,7 +145,7 @@ class SparkTimerInternals implements TimerInternals {
     return inputWatermark;
   }
 
-  /** Advances the watermark - since */
+  /** Advances the watermark. */
   public void advanceWatermark() {
     inputWatermark = highWatermark;
   }
@@ -170,4 +170,4 @@ class SparkTimerInternals implements TimerInternals {
     throw new UnsupportedOperationException("Deleting a timer by ID is not yet supported.");
   }
 
-}
\ No newline at end of file
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
index 8a41b4e..1e879ce 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
@@ -18,32 +18,21 @@
 
 package org.apache.beam.runners.spark.translation;
 
-import com.google.common.collect.Lists;
-import java.util.Collections;
-import java.util.Map;
-import org.apache.beam.runners.core.SystemReduceFn;
-import org.apache.beam.runners.spark.aggregators.NamedAggregators;
+import static com.google.common.base.Preconditions.checkArgument;
+
 import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.spark.util.ByteArray;
-import org.apache.beam.runners.spark.util.SideInputBroadcast;
-import org.apache.beam.sdk.coders.CannotProvideCoderException;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.IterableCoder;
 import org.apache.beam.sdk.coders.KvCoder;
-import org.apache.beam.sdk.transforms.CombineWithContext;
-import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.util.WindowedValue.WindowedValueCoder;
 import org.apache.beam.sdk.util.WindowingStrategy;
 import org.apache.beam.sdk.values.KV;
-import org.apache.beam.sdk.values.TupleTag;
-import org.apache.spark.Accumulator;
 import org.apache.spark.api.java.JavaPairRDD;
 import org.apache.spark.api.java.JavaRDD;
-import org.apache.spark.api.java.JavaSparkContext;
 import org.apache.spark.api.java.function.Function;
 import org.apache.spark.api.java.function.Function2;
-import org.apache.spark.api.java.function.PairFlatMapFunction;
-import scala.Tuple2;
 
 
 
@@ -53,113 +42,71 @@ import scala.Tuple2;
 public class GroupCombineFunctions {
 
   /**
-   * Apply {@link org.apache.beam.sdk.transforms.GroupByKey} to a Spark RDD.
+   * An implementation of
+   * {@link org.apache.beam.runners.core.GroupByKeyViaGroupByKeyOnly.GroupByKeyOnly}
+   * for the Spark runner.
    */
-  public static <K, V, W extends BoundedWindow> JavaRDD<WindowedValue<KV<K,
-      Iterable<V>>>> groupByKey(JavaRDD<WindowedValue<KV<K, V>>> rdd,
-                                Accumulator<NamedAggregators> accum,
-                                KvCoder<K, V> coder,
-                                SparkRuntimeContext runtimeContext,
-                                WindowingStrategy<?, W> windowingStrategy) {
-    //--- coders.
-    final Coder<K> keyCoder = coder.getKeyCoder();
-    final Coder<V> valueCoder = coder.getValueCoder();
-    final WindowedValue.WindowedValueCoder<V> wvCoder = WindowedValue.FullWindowedValueCoder.of(
-        valueCoder, windowingStrategy.getWindowFn().windowCoder());
+  public static <K, V> JavaRDD<WindowedValue<KV<K, Iterable<WindowedValue<V>>>>> groupByKeyOnly(
+      JavaRDD<WindowedValue<KV<K, V>>> rdd,
+      Coder<K> keyCoder,
+      WindowedValueCoder<V> wvCoder) {
 
-    //--- groupByKey.
     // Use coders to convert objects in the PCollection to byte arrays, so they
     // can be transferred over the network for the shuffle.
-    JavaRDD<WindowedValue<KV<K, Iterable<WindowedValue<V>>>>> groupedByKey =
-        rdd.map(new ReifyTimestampsAndWindowsFunction<K, V>())
-            .map(WindowingHelpers.<KV<K, WindowedValue<V>>>unwindowFunction())
-            .mapToPair(TranslationUtils.<K, WindowedValue<V>>toPairFunction())
-            .mapToPair(CoderHelpers.toByteFunction(keyCoder, wvCoder))
-            .groupByKey()
-            .mapToPair(CoderHelpers.fromByteFunctionIterable(keyCoder, wvCoder))
-            // empty windows are OK here, see GroupByKey#evaluateHelper in the SDK
-            .map(TranslationUtils.<K, Iterable<WindowedValue<V>>>fromPairFunction())
-            .map(WindowingHelpers.<KV<K, Iterable<WindowedValue<V>>>>windowFunction());
-
-    //--- now group also by window.
-    // GroupAlsoByWindow currently uses a dummy in-memory StateInternals
-    return groupedByKey.flatMap(
-        new SparkGroupAlsoByWindowViaOutputBufferFn<>(
-            windowingStrategy,
-            new TranslationUtils.InMemoryStateInternalsFactory<K>(),
-            SystemReduceFn.<K, V, W>buffering(valueCoder),
-            runtimeContext,
-            accum));
+    return rdd
+        .map(new ReifyTimestampsAndWindowsFunction<K, V>())
+        .map(WindowingHelpers.<KV<K, WindowedValue<V>>>unwindowFunction())
+        .mapToPair(TranslationUtils.<K, WindowedValue<V>>toPairFunction())
+        .mapToPair(CoderHelpers.toByteFunction(keyCoder, wvCoder))
+        .groupByKey()
+        .mapToPair(CoderHelpers.fromByteFunctionIterable(keyCoder, wvCoder))
+        .map(TranslationUtils.<K, Iterable<WindowedValue<V>>>fromPairFunction())
+        .map(WindowingHelpers.<KV<K, Iterable<WindowedValue<V>>>>windowFunction());
   }
 
   /**
    * Apply a composite {@link org.apache.beam.sdk.transforms.Combine.Globally} transformation.
    */
-  public static <InputT, AccumT, OutputT> JavaRDD<WindowedValue<OutputT>>
-  combineGlobally(JavaRDD<WindowedValue<InputT>> rdd,
-                  final CombineWithContext.CombineFnWithContext<InputT, AccumT, OutputT> combineFn,
-                  final Coder<InputT> iCoder,
-                  final Coder<OutputT> oCoder,
-                  final SparkRuntimeContext runtimeContext,
-                  final WindowingStrategy<?, ?> windowingStrategy,
-                  final Map<TupleTag<?>, KV<WindowingStrategy<?, ?>, SideInputBroadcast<?>>>
-                      sideInputs,
-                  boolean hasDefault) {
-    // handle empty input RDD, which will natively skip the entire execution as Spark will not
-    // run on empty RDDs.
-    if (rdd.isEmpty()) {
-      JavaSparkContext jsc = new JavaSparkContext(rdd.context());
-      if (hasDefault) {
-        OutputT defaultValue = combineFn.defaultValue();
-        return jsc
-            .parallelize(Lists.newArrayList(CoderHelpers.toByteArray(defaultValue, oCoder)))
-            .map(CoderHelpers.fromByteFunction(oCoder))
-            .map(WindowingHelpers.<OutputT>windowFunction());
-      } else {
-        return jsc.emptyRDD();
-      }
-    }
-
-    //--- coders.
-    final Coder<AccumT> aCoder;
-    try {
-      aCoder = combineFn.getAccumulatorCoder(runtimeContext.getCoderRegistry(), iCoder);
-    } catch (CannotProvideCoderException e) {
-      throw new IllegalStateException("Could not determine coder for accumulator", e);
-    }
-    // windowed coders.
+  public static <InputT, AccumT> Iterable<WindowedValue<AccumT>> combineGlobally(
+      JavaRDD<WindowedValue<InputT>> rdd,
+      final SparkGlobalCombineFn<InputT, AccumT, ?> sparkCombineFn,
+      final Coder<InputT> iCoder,
+      final Coder<AccumT> aCoder,
+      final WindowingStrategy<?, ?> windowingStrategy) {
+    checkArgument(!rdd.isEmpty(), "CombineGlobally computation should be skipped for empty RDDs.");
+
+    // coders.
     final WindowedValue.FullWindowedValueCoder<InputT> wviCoder =
         WindowedValue.FullWindowedValueCoder.of(iCoder,
             windowingStrategy.getWindowFn().windowCoder());
     final WindowedValue.FullWindowedValueCoder<AccumT> wvaCoder =
         WindowedValue.FullWindowedValueCoder.of(aCoder,
             windowingStrategy.getWindowFn().windowCoder());
-    final WindowedValue.FullWindowedValueCoder<OutputT> wvoCoder =
-        WindowedValue.FullWindowedValueCoder.of(oCoder,
-            windowingStrategy.getWindowFn().windowCoder());
-
-    final SparkGlobalCombineFn<InputT, AccumT, OutputT> sparkCombineFn =
-        new SparkGlobalCombineFn<>(combineFn, runtimeContext, sideInputs, windowingStrategy);
     final IterableCoder<WindowedValue<AccumT>> iterAccumCoder = IterableCoder.of(wvaCoder);
 
-
     // Use coders to convert objects in the PCollection to byte arrays, so they
     // can be transferred over the network for the shuffle.
-    JavaRDD<byte[]> inRddBytes = rdd.map(CoderHelpers.toByteFunction(wviCoder));
-    /*AccumT*/ byte[] acc = inRddBytes.aggregate(
+    // for readability, we add comments with actual type next to byte[].
+    // to shorten line length, we use:
+    //---- WV: WindowedValue
+    //---- Iterable: Itr
+    //---- AccumT: A
+    //---- InputT: I
+    JavaRDD<byte[]> inputRDDBytes = rdd.map(CoderHelpers.toByteFunction(wviCoder));
+    /*Itr<WV<A>>*/ byte[] accumulatedBytes = inputRDDBytes.aggregate(
         CoderHelpers.toByteArray(sparkCombineFn.zeroValue(), iterAccumCoder),
-        new Function2</*AccumT*/ byte[], /*InputT*/ byte[], /*AccumT*/ byte[]>() {
+        new Function2</*A*/ byte[], /*I*/ byte[], /*A*/ byte[]>() {
           @Override
-          public /*AccumT*/ byte[] call(/*AccumT*/ byte[] ab, /*InputT*/ byte[] ib)
+          public /*Itr<WV<A>>*/ byte[] call(/*Itr<WV<A>>*/ byte[] ab, /*WV<I>*/ byte[] ib)
               throws Exception {
             Iterable<WindowedValue<AccumT>> a = CoderHelpers.fromByteArray(ab, iterAccumCoder);
             WindowedValue<InputT> i = CoderHelpers.fromByteArray(ib, wviCoder);
             return CoderHelpers.toByteArray(sparkCombineFn.seqOp(a, i), iterAccumCoder);
           }
         },
-        new Function2</*AccumT*/ byte[], /*AccumT*/ byte[], /*AccumT*/ byte[]>() {
+        new Function2</*Itr<WV<A>>>*/ byte[], /*Itr<WV<A>>>*/ byte[], /*Itr<WV<A>>>*/ byte[]>() {
           @Override
-          public /*AccumT*/ byte[] call(/*AccumT*/ byte[] a1b, /*AccumT*/ byte[] a2b)
+          public /*Itr<WV<A>>>*/ byte[] call(/*Itr<WV<A>>>*/ byte[] a1b, /*Itr<WV<A>>>*/ byte[] a2b)
               throws Exception {
             Iterable<WindowedValue<AccumT>> a1 = CoderHelpers.fromByteArray(a1b, iterAccumCoder);
             Iterable<WindowedValue<AccumT>> a2 = CoderHelpers.fromByteArray(a2b, iterAccumCoder);
@@ -168,10 +115,7 @@ public class GroupCombineFunctions {
           }
         }
     );
-    Iterable<WindowedValue<OutputT>> output =
-        sparkCombineFn.extractOutput(CoderHelpers.fromByteArray(acc, iterAccumCoder));
-    return new JavaSparkContext(rdd.context()).parallelize(
-        CoderHelpers.toByteArrays(output, wvoCoder)).map(CoderHelpers.fromByteFunction(wvoCoder));
+    return CoderHelpers.fromByteArray(accumulatedBytes, iterAccumCoder);
   }
 
   /**
@@ -183,31 +127,22 @@ public class GroupCombineFunctions {
    * For streaming, this will be called from within a serialized context
    * (DStream's transform callback), so passed arguments need to be Serializable.
    */
-  public static <K, InputT, AccumT, OutputT> JavaRDD<WindowedValue<KV<K, OutputT>>>
-  combinePerKey(JavaRDD<WindowedValue<KV<K, InputT>>> rdd,
-                final CombineWithContext.KeyedCombineFnWithContext<K, InputT, AccumT, OutputT>
-                    combineFn,
-                final KvCoder<K, InputT> inputCoder,
-                final SparkRuntimeContext runtimeContext,
-                final WindowingStrategy<?, ?> windowingStrategy,
-                final Map<TupleTag<?>, KV<WindowingStrategy<?, ?>, SideInputBroadcast<?>>>
-                    sideInputs) {
-    //--- coders.
-    final Coder<K> keyCoder = inputCoder.getKeyCoder();
-    final Coder<InputT> viCoder = inputCoder.getValueCoder();
-    final Coder<AccumT> vaCoder;
-    try {
-      vaCoder = combineFn.getAccumulatorCoder(runtimeContext.getCoderRegistry(), keyCoder, viCoder);
-    } catch (CannotProvideCoderException e) {
-      throw new IllegalStateException("Could not determine coder for accumulator", e);
-    }
-    // windowed coders.
+  public static <K, InputT, AccumT> JavaPairRDD<K, Iterable<WindowedValue<KV<K, AccumT>>>>
+      combinePerKey(
+          JavaRDD<WindowedValue<KV<K, InputT>>> rdd,
+          final SparkKeyedCombineFn<K, InputT, AccumT, ?> sparkCombineFn,
+          final Coder<K> keyCoder,
+          final Coder<InputT> iCoder,
+          final Coder<AccumT> aCoder,
+          final WindowingStrategy<?, ?> windowingStrategy) {
+    // coders.
     final WindowedValue.FullWindowedValueCoder<KV<K, InputT>> wkviCoder =
-        WindowedValue.FullWindowedValueCoder.of(KvCoder.of(keyCoder, viCoder),
+        WindowedValue.FullWindowedValueCoder.of(KvCoder.of(keyCoder, iCoder),
             windowingStrategy.getWindowFn().windowCoder());
     final WindowedValue.FullWindowedValueCoder<KV<K, AccumT>> wkvaCoder =
-        WindowedValue.FullWindowedValueCoder.of(KvCoder.of(keyCoder, vaCoder),
+        WindowedValue.FullWindowedValueCoder.of(KvCoder.of(keyCoder, aCoder),
             windowingStrategy.getWindowFn().windowCoder());
+    final IterableCoder<WindowedValue<KV<K, AccumT>>> iterAccumCoder = IterableCoder.of(wkvaCoder);
 
     // We need to duplicate K as both the key of the JavaPairRDD as well as inside the value,
     // since the functions passed to combineByKey don't receive the associated key of each
@@ -217,53 +152,46 @@ public class GroupCombineFunctions {
     // we won't need to duplicate the keys anymore.
     // Key has to bw windowed in order to group by window as well.
     JavaPairRDD<K, WindowedValue<KV<K, InputT>>> inRddDuplicatedKeyPair =
-        rdd.flatMapToPair(
-            new PairFlatMapFunction<WindowedValue<KV<K, InputT>>, K,
-                WindowedValue<KV<K, InputT>>>() {
-              @Override
-              public Iterable<Tuple2<K, WindowedValue<KV<K, InputT>>>>
-              call(WindowedValue<KV<K, InputT>> wkv) {
-                return Collections.singletonList(new Tuple2<>(wkv.getValue().getKey(), wkv));
-              }
-            });
-
-    final SparkKeyedCombineFn<K, InputT, AccumT, OutputT> sparkCombineFn =
-        new SparkKeyedCombineFn<>(combineFn, runtimeContext, sideInputs, windowingStrategy);
-    final IterableCoder<WindowedValue<KV<K, AccumT>>> iterAccumCoder = IterableCoder.of(wkvaCoder);
+        rdd.mapToPair(TranslationUtils.<K, InputT>toPairByKeyInWindowedValue());
 
     // Use coders to convert objects in the PCollection to byte arrays, so they
     // can be transferred over the network for the shuffle.
+    // for readability, we add comments with actual type next to byte[].
+    // to shorten line length, we use:
+    //---- WV: WindowedValue
+    //---- Iterable: Itr
+    //---- AccumT: A
+    //---- InputT: I
     JavaPairRDD<ByteArray, byte[]> inRddDuplicatedKeyPairBytes = inRddDuplicatedKeyPair
         .mapToPair(CoderHelpers.toByteFunction(keyCoder, wkviCoder));
 
-    // The output of combineByKey will be "AccumT" (accumulator)
-    // types rather than "OutputT" (final output types) since Combine.CombineFn
-    // only provides ways to merge VAs, and no way to merge VOs.
-    JavaPairRDD</*K*/ ByteArray, /*KV<K, AccumT>*/ byte[]> accumulatedBytes =
+    JavaPairRDD</*K*/ ByteArray, /*Itr<WV<KV<K, A>>>*/ byte[]> accumulatedBytes =
         inRddDuplicatedKeyPairBytes.combineByKey(
-        new Function</*KV<K, InputT>*/ byte[], /*KV<K, AccumT>*/ byte[]>() {
+        new Function</*WV<KV<K, I>>*/ byte[], /*Itr<WV<KV<K, A>>>*/ byte[]>() {
           @Override
-          public /*KV<K, AccumT>*/ byte[] call(/*KV<K, InputT>*/ byte[] input) {
+          public /*Itr<WV<KV<K, A>>>*/ byte[] call(/*WV<KV<K, I>>*/ byte[] input) {
             WindowedValue<KV<K, InputT>> wkvi = CoderHelpers.fromByteArray(input, wkviCoder);
             return CoderHelpers.toByteArray(sparkCombineFn.createCombiner(wkvi), iterAccumCoder);
           }
         },
-        new Function2</*KV<K, AccumT>*/ byte[], /*KV<K, InputT>*/ byte[],
-            /*KV<K, AccumT>*/ byte[]>() {
+        new Function2</*Itr<WV<KV<K, A>>>*/ byte[], /*WV<KV<K, I>>*/ byte[],
+            /*Itr<WV<KV<K, A>>>*/ byte[]>() {
           @Override
-          public /*KV<K, AccumT>*/ byte[] call(/*KV<K, AccumT>*/ byte[] acc,
-              /*KV<K, InputT>*/ byte[] input) {
+          public /*Itr<WV<KV<K, A>>>*/ byte[] call(
+              /*Itr<WV<KV<K, A>>>*/ byte[] acc,
+              /*WV<KV<K, I>>*/ byte[] input) {
             Iterable<WindowedValue<KV<K, AccumT>>> wkvas =
                 CoderHelpers.fromByteArray(acc, iterAccumCoder);
             WindowedValue<KV<K, InputT>> wkvi = CoderHelpers.fromByteArray(input, wkviCoder);
             return CoderHelpers.toByteArray(sparkCombineFn.mergeValue(wkvi, wkvas), iterAccumCoder);
           }
         },
-        new Function2</*KV<K, AccumT>*/ byte[], /*KV<K, AccumT>*/ byte[],
-            /*KV<K, AccumT>*/ byte[]>() {
+        new Function2</*Itr<WV<KV<K, A>>>*/ byte[], /*Itr<WV<KV<K, A>>>*/ byte[],
+            /*Itr<WV<KV<K, A>>>*/ byte[]>() {
           @Override
-          public /*KV<K, AccumT>*/ byte[] call(/*KV<K, AccumT>*/ byte[] acc1,
-              /*KV<K, AccumT>*/ byte[] acc2) {
+          public /*Itr<WV<KV<K, A>>>*/ byte[] call(
+              /*Itr<WV<KV<K, A>>>*/ byte[] acc1,
+              /*Itr<WV<KV<K, A>>>*/ byte[] acc2) {
             Iterable<WindowedValue<KV<K, AccumT>>> wkvas1 =
                 CoderHelpers.fromByteArray(acc1, iterAccumCoder);
             Iterable<WindowedValue<KV<K, AccumT>>> wkvas2 =
@@ -273,23 +201,6 @@ public class GroupCombineFunctions {
           }
         });
 
-    JavaPairRDD<K, WindowedValue<OutputT>> extracted = accumulatedBytes
-        .mapToPair(CoderHelpers.fromByteFunction(keyCoder, iterAccumCoder))
-        .flatMapValues(new Function<Iterable<WindowedValue<KV<K, AccumT>>>,
-            Iterable<WindowedValue<OutputT>>>() {
-              @Override
-              public Iterable<WindowedValue<OutputT>> call(
-                  Iterable<WindowedValue<KV<K, AccumT>>> accums) {
-                return sparkCombineFn.extractOutput(accums);
-              }
-            });
-    return extracted.map(TranslationUtils.<K, WindowedValue<OutputT>>fromPairFunction()).map(
-        new Function<KV<K, WindowedValue<OutputT>>, WindowedValue<KV<K, OutputT>>>() {
-          @Override
-          public WindowedValue<KV<K, OutputT>> call(KV<K, WindowedValue<OutputT>> kwvo)
-              throws Exception {
-            return kwvo.getValue().withValue(KV.of(kwvo.getKey(), kwvo.getValue().getValue()));
-          }
-        });
+    return accumulatedBytes.mapToPair(CoderHelpers.fromByteFunction(keyCoder, iterAccumCoder));
   }
 }

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TransformTranslator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TransformTranslator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TransformTranslator.java
index 14c14dc..a643651 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TransformTranslator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TransformTranslator.java
@@ -27,6 +27,7 @@ import static org.apache.beam.runners.spark.io.hadoop.ShardNameBuilder.replaceSh
 import static org.apache.beam.runners.spark.translation.TranslationUtils.rejectSplittable;
 import static org.apache.beam.runners.spark.translation.TranslationUtils.rejectStateAndTimers;
 
+import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import java.io.IOException;
 import java.util.Collections;
@@ -35,6 +36,7 @@ import java.util.Map;
 import org.apache.avro.mapred.AvroKey;
 import org.apache.avro.mapreduce.AvroJob;
 import org.apache.avro.mapreduce.AvroKeyInputFormat;
+import org.apache.beam.runners.core.SystemReduceFn;
 import org.apache.beam.runners.spark.aggregators.NamedAggregators;
 import org.apache.beam.runners.spark.aggregators.SparkAggregators;
 import org.apache.beam.runners.spark.coders.CoderHelpers;
@@ -46,6 +48,7 @@ import org.apache.beam.runners.spark.io.hadoop.TemplatedTextOutputFormat;
 import org.apache.beam.runners.spark.metrics.MetricsAccumulator;
 import org.apache.beam.runners.spark.metrics.SparkMetricsContainer;
 import org.apache.beam.runners.spark.util.SideInputBroadcast;
+import org.apache.beam.sdk.coders.CannotProvideCoderException;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.KvCoder;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
@@ -63,6 +66,7 @@ import org.apache.beam.sdk.transforms.ParDo;
 import org.apache.beam.sdk.transforms.View;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.transforms.windowing.Window;
+import org.apache.beam.sdk.transforms.windowing.WindowFn;
 import org.apache.beam.sdk.util.CombineFnUtil;
 import org.apache.beam.sdk.util.WindowedValue;
 import org.apache.beam.sdk.util.WindowingStrategy;
@@ -119,101 +123,159 @@ public final class TransformTranslator {
     };
   }
 
-  private static <K, V> TransformEvaluator<GroupByKey<K, V>> groupByKey() {
+  private static <K, V, W extends BoundedWindow> TransformEvaluator<GroupByKey<K, V>> groupByKey() {
     return new TransformEvaluator<GroupByKey<K, V>>() {
       @Override
       public void evaluate(GroupByKey<K, V> transform, EvaluationContext context) {
         @SuppressWarnings("unchecked")
         JavaRDD<WindowedValue<KV<K, V>>> inRDD =
             ((BoundedDataset<KV<K, V>>) context.borrowDataset(transform)).getRDD();
-
         @SuppressWarnings("unchecked")
         final KvCoder<K, V> coder = (KvCoder<K, V>) context.getInput(transform).getCoder();
-
         final Accumulator<NamedAggregators> accum =
             SparkAggregators.getNamedAggregators(context.getSparkContext());
-
-        context.putDataset(
-            transform,
-            new BoundedDataset<>(
-                GroupCombineFunctions.groupByKey(
-                    inRDD,
-                    accum,
-                    coder,
-                    context.getRuntimeContext(),
-                    context.getInput(transform).getWindowingStrategy())));
+        @SuppressWarnings("unchecked")
+        final WindowingStrategy<?, W> windowingStrategy =
+            (WindowingStrategy<?, W>) context.getInput(transform).getWindowingStrategy();
+        @SuppressWarnings("unchecked")
+        final WindowFn<Object, W> windowFn = (WindowFn<Object, W>) windowingStrategy.getWindowFn();
+
+        //--- coders.
+        final Coder<K> keyCoder = coder.getKeyCoder();
+        final WindowedValue.WindowedValueCoder<V> wvCoder =
+            WindowedValue.FullWindowedValueCoder.of(coder.getValueCoder(), windowFn.windowCoder());
+
+        //--- group by key only.
+        JavaRDD<WindowedValue<KV<K, Iterable<WindowedValue<V>>>>> groupedByKey =
+            GroupCombineFunctions.groupByKeyOnly(inRDD, keyCoder, wvCoder);
+
+        //--- now group also by window.
+        // for batch, GroupAlsoByWindow uses an in-memory StateInternals.
+        JavaRDD<WindowedValue<KV<K, Iterable<V>>>> groupedAlsoByWindow = groupedByKey.flatMap(
+            new SparkGroupAlsoByWindowViaOutputBufferFn<>(
+                windowingStrategy,
+                new TranslationUtils.InMemoryStateInternalsFactory<K>(),
+                SystemReduceFn.<K, V, W>buffering(coder.getValueCoder()),
+                context.getRuntimeContext(),
+                accum));
+
+        context.putDataset(transform, new BoundedDataset<>(groupedAlsoByWindow));
       }
     };
   }
 
   private static <K, InputT, OutputT> TransformEvaluator<Combine.GroupedValues<K, InputT, OutputT>>
-  combineGrouped() {
-    return new TransformEvaluator<Combine.GroupedValues<K, InputT, OutputT>>() {
-      @Override
-      public void evaluate(Combine.GroupedValues<K, InputT, OutputT> transform,
-                           EvaluationContext context) {
-        // get the applied combine function.
-        PCollection<? extends KV<K, ? extends Iterable<InputT>>> input =
-            context.getInput(transform);
-        WindowingStrategy<?, ?> windowingStrategy = input.getWindowingStrategy();
-        @SuppressWarnings("unchecked")
-        CombineWithContext.KeyedCombineFnWithContext<K, InputT, ?, OutputT> fn =
-            (CombineWithContext.KeyedCombineFnWithContext<K, InputT, ?, OutputT>)
-                CombineFnUtil.toFnWithContext(transform.getFn());
-
-        @SuppressWarnings("unchecked")
-        JavaRDD<WindowedValue<KV<K, Iterable<InputT>>>> inRDD =
-            ((BoundedDataset<KV<K, Iterable<InputT>>>)
-                context.borrowDataset(transform)).getRDD();
-
-        SparkKeyedCombineFn<K, InputT, ?, OutputT> combineFnWithContext =
-            new SparkKeyedCombineFn<>(fn, context.getRuntimeContext(),
-                TranslationUtils.getSideInputs(transform.getSideInputs(), context),
-                windowingStrategy);
-        context.putDataset(transform, new BoundedDataset<>(inRDD.map(new TranslationUtils
-            .CombineGroupedValues<>(
-            combineFnWithContext))));
-      }
-    };
+      combineGrouped() {
+          return new TransformEvaluator<Combine.GroupedValues<K, InputT, OutputT>>() {
+            @Override
+            public void evaluate(
+                Combine.GroupedValues<K, InputT, OutputT> transform,
+                EvaluationContext context) {
+              @SuppressWarnings("unchecked")
+              CombineWithContext.KeyedCombineFnWithContext<K, InputT, ?, OutputT> combineFn =
+                  (CombineWithContext.KeyedCombineFnWithContext<K, InputT, ?, OutputT>)
+                      CombineFnUtil.toFnWithContext(transform.getFn());
+              final SparkKeyedCombineFn<K, InputT, ?, OutputT> sparkCombineFn =
+                  new SparkKeyedCombineFn<>(combineFn, context.getRuntimeContext(),
+                      TranslationUtils.getSideInputs(transform.getSideInputs(), context),
+                          context.getInput(transform).getWindowingStrategy());
+
+              @SuppressWarnings("unchecked")
+              JavaRDD<WindowedValue<KV<K, Iterable<InputT>>>> inRDD =
+                  ((BoundedDataset<KV<K, Iterable<InputT>>>) context.borrowDataset(transform))
+                      .getRDD();
+
+              JavaRDD<WindowedValue<KV<K, OutputT>>> outRDD = inRDD.map(
+                   new Function<WindowedValue<KV<K, Iterable<InputT>>>,
+                       WindowedValue<KV<K, OutputT>>>() {
+                         @Override
+                         public WindowedValue<KV<K, OutputT>> call(
+                             WindowedValue<KV<K, Iterable<InputT>>> in) throws Exception {
+                               return WindowedValue.of(
+                                   KV.of(in.getValue().getKey(), sparkCombineFn.apply(in)),
+                                   in.getTimestamp(),
+                                   in.getWindows(),
+                                   in.getPane());
+                             }
+                       });
+               context.putDataset(transform, new BoundedDataset<>(outRDD));
+            }
+          };
   }
 
   private static <InputT, AccumT, OutputT> TransformEvaluator<Combine.Globally<InputT, OutputT>>
-  combineGlobally() {
-    return new TransformEvaluator<Combine.Globally<InputT, OutputT>>() {
-
-      @Override
-      public void evaluate(Combine.Globally<InputT, OutputT> transform, EvaluationContext context) {
-        final PCollection<InputT> input = context.getInput(transform);
-        // serializable arguments to pass.
-        final Coder<InputT> iCoder = context.getInput(transform).getCoder();
-        final Coder<OutputT> oCoder = context.getOutput(transform).getCoder();
-        @SuppressWarnings("unchecked")
-        final CombineWithContext.CombineFnWithContext<InputT, AccumT, OutputT> combineFn =
-            (CombineWithContext.CombineFnWithContext<InputT, AccumT, OutputT>)
-                CombineFnUtil.toFnWithContext(transform.getFn());
-        final WindowingStrategy<?, ?> windowingStrategy = input.getWindowingStrategy();
-        final SparkRuntimeContext runtimeContext = context.getRuntimeContext();
-        final Map<TupleTag<?>, KV<WindowingStrategy<?, ?>, SideInputBroadcast<?>>> sideInputs =
-            TranslationUtils.getSideInputs(transform.getSideInputs(), context);
-        final boolean hasDefault = transform.isInsertDefault();
+      combineGlobally() {
+        return new TransformEvaluator<Combine.Globally<InputT, OutputT>>() {
 
-        @SuppressWarnings("unchecked")
-        JavaRDD<WindowedValue<InputT>> inRdd =
-            ((BoundedDataset<InputT>) context.borrowDataset(transform)).getRDD();
-
-        context.putDataset(transform, new BoundedDataset<>(GroupCombineFunctions
-            .combineGlobally(inRdd, combineFn,
-                iCoder, oCoder, runtimeContext, windowingStrategy, sideInputs, hasDefault)));
-      }
-    };
+          @Override
+          public void evaluate(
+              Combine.Globally<InputT, OutputT> transform,
+              EvaluationContext context) {
+            final PCollection<InputT> input = context.getInput(transform);
+            final Coder<InputT> iCoder = context.getInput(transform).getCoder();
+            final Coder<OutputT> oCoder = context.getOutput(transform).getCoder();
+            final WindowingStrategy<?, ?> windowingStrategy = input.getWindowingStrategy();
+            @SuppressWarnings("unchecked")
+            final CombineWithContext.CombineFnWithContext<InputT, AccumT, OutputT> combineFn =
+                (CombineWithContext.CombineFnWithContext<InputT, AccumT, OutputT>)
+                    CombineFnUtil.toFnWithContext(transform.getFn());
+            final WindowedValue.FullWindowedValueCoder<OutputT> wvoCoder =
+                WindowedValue.FullWindowedValueCoder.of(oCoder,
+                    windowingStrategy.getWindowFn().windowCoder());
+            final SparkRuntimeContext runtimeContext = context.getRuntimeContext();
+            final boolean hasDefault = transform.isInsertDefault();
+
+            final SparkGlobalCombineFn<InputT, AccumT, OutputT> sparkCombineFn =
+                new SparkGlobalCombineFn<>(
+                    combineFn,
+                    runtimeContext,
+                    TranslationUtils.getSideInputs(transform.getSideInputs(), context),
+                    windowingStrategy);
+            final Coder<AccumT> aCoder;
+            try {
+              aCoder = combineFn.getAccumulatorCoder(runtimeContext.getCoderRegistry(), iCoder);
+            } catch (CannotProvideCoderException e) {
+              throw new IllegalStateException("Could not determine coder for accumulator", e);
+            }
+
+            @SuppressWarnings("unchecked")
+            JavaRDD<WindowedValue<InputT>> inRdd =
+                ((BoundedDataset<InputT>) context.borrowDataset(transform)).getRDD();
+
+            JavaRDD<WindowedValue<OutputT>> outRdd;
+            // handle empty input RDD, which will naturally skip the entire execution
+            // as Spark will not run on empty RDDs.
+            if (inRdd.isEmpty()) {
+              JavaSparkContext jsc = new JavaSparkContext(inRdd.context());
+              if (hasDefault) {
+                OutputT defaultValue = combineFn.defaultValue();
+                outRdd = jsc
+                    .parallelize(Lists.newArrayList(CoderHelpers.toByteArray(defaultValue, oCoder)))
+                    .map(CoderHelpers.fromByteFunction(oCoder))
+                    .map(WindowingHelpers.<OutputT>windowFunction());
+              } else {
+                outRdd = jsc.emptyRDD();
+              }
+            } else {
+              Iterable<WindowedValue<AccumT>> accumulated = GroupCombineFunctions.combineGlobally(
+                  inRdd, sparkCombineFn, iCoder, aCoder, windowingStrategy);
+              Iterable<WindowedValue<OutputT>> output = sparkCombineFn.extractOutput(accumulated);
+              outRdd = context.getSparkContext()
+                  .parallelize(CoderHelpers.toByteArrays(output, wvoCoder))
+                  .map(CoderHelpers.fromByteFunction(wvoCoder));
+            }
+            context.putDataset(transform, new BoundedDataset<>(outRdd));
+          }
+        };
   }
 
   private static <K, InputT, AccumT, OutputT>
   TransformEvaluator<Combine.PerKey<K, InputT, OutputT>> combinePerKey() {
     return new TransformEvaluator<Combine.PerKey<K, InputT, OutputT>>() {
       @Override
-      public void evaluate(Combine.PerKey<K, InputT, OutputT> transform,
-                           EvaluationContext context) {
+      public void evaluate(
+          Combine.PerKey<K, InputT, OutputT> transform,
+          EvaluationContext context) {
         final PCollection<KV<K, InputT>> input = context.getInput(transform);
         // serializable arguments to pass.
         @SuppressWarnings("unchecked")
@@ -227,14 +289,44 @@ public final class TransformTranslator {
         final SparkRuntimeContext runtimeContext = context.getRuntimeContext();
         final Map<TupleTag<?>, KV<WindowingStrategy<?, ?>, SideInputBroadcast<?>>> sideInputs =
             TranslationUtils.getSideInputs(transform.getSideInputs(), context);
+        final SparkKeyedCombineFn<K, InputT, AccumT, OutputT> sparkCombineFn =
+            new SparkKeyedCombineFn<>(combineFn, runtimeContext, sideInputs, windowingStrategy);
+        final Coder<AccumT> vaCoder;
+        try {
+          vaCoder = combineFn.getAccumulatorCoder(runtimeContext.getCoderRegistry(),
+              inputCoder.getKeyCoder(), inputCoder.getValueCoder());
+        } catch (CannotProvideCoderException e) {
+          throw new IllegalStateException("Could not determine coder for accumulator", e);
+        }
 
         @SuppressWarnings("unchecked")
         JavaRDD<WindowedValue<KV<K, InputT>>> inRdd =
             ((BoundedDataset<KV<K, InputT>>) context.borrowDataset(transform)).getRDD();
 
-        context.putDataset(transform, new BoundedDataset<>(GroupCombineFunctions
-            .combinePerKey(inRdd, combineFn,
-                inputCoder, runtimeContext, windowingStrategy, sideInputs)));
+        JavaPairRDD<K, Iterable<WindowedValue<KV<K, AccumT>>>> accumulatePerKey =
+            GroupCombineFunctions.combinePerKey(inRdd, sparkCombineFn, inputCoder.getKeyCoder(),
+                inputCoder.getValueCoder(), vaCoder, windowingStrategy);
+
+        JavaRDD<WindowedValue<KV<K, OutputT>>> outRdd =
+            accumulatePerKey.flatMapValues(new Function<Iterable<WindowedValue<KV<K, AccumT>>>,
+                Iterable<WindowedValue<OutputT>>>() {
+                  @Override
+                  public Iterable<WindowedValue<OutputT>> call(
+                      Iterable<WindowedValue<KV<K, AccumT>>> iter) throws Exception {
+                        return sparkCombineFn.extractOutput(iter);
+                      }
+                }).map(TranslationUtils.<K, WindowedValue<OutputT>>fromPairFunction())
+                  .map(new Function<KV<K, WindowedValue<OutputT>>,
+                      WindowedValue<KV<K, OutputT>>>() {
+                        @Override
+                          public WindowedValue<KV<K, OutputT>> call(
+                              KV<K, WindowedValue<OutputT>> kv) throws Exception {
+                                WindowedValue<OutputT> wv = kv.getValue();
+                                return wv.withValue(KV.of(kv.getKey(), wv.getValue()));
+                              }
+                      });
+
+        context.putDataset(transform, new BoundedDataset<>(outRdd));
       }
     };
   }

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
index 7d83230..6b27436 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
@@ -21,7 +21,6 @@ package org.apache.beam.runners.spark.translation;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Maps;
 import java.io.Serializable;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import org.apache.beam.runners.core.InMemoryStateInternals;
@@ -42,11 +41,11 @@ import org.apache.beam.sdk.values.KV;
 import org.apache.beam.sdk.values.PCollectionView;
 import org.apache.beam.sdk.values.TupleTag;
 import org.apache.spark.api.java.JavaSparkContext;
-import org.apache.spark.api.java.function.FlatMapFunction;
 import org.apache.spark.api.java.function.Function;
 import org.apache.spark.api.java.function.PairFunction;
 import org.apache.spark.streaming.api.java.JavaDStream;
 import org.apache.spark.streaming.api.java.JavaPairDStream;
+
 import scala.Tuple2;
 
 /**
@@ -148,20 +147,17 @@ public final class TranslationUtils {
     };
   }
 
-  /** A Flatmap iterator function, flattening iterators into their elements. */
-  public static <T> FlatMapFunction<Iterator<T>, T> flattenIter() {
-    return new FlatMapFunction<Iterator<T>, T>() {
-      @Override
-      public Iterable<T> call(final Iterator<T> t) throws Exception {
-        return new Iterable<T>() {
+  /** Extract key from a {@link WindowedValue} {@link KV} into a pair. */
+  public static <K, V> PairFunction<WindowedValue<KV<K, V>>, K, WindowedValue<KV<K, V>>>
+      toPairByKeyInWindowedValue() {
+        return new PairFunction<WindowedValue<KV<K, V>>, K, WindowedValue<KV<K, V>>>() {
           @Override
-          public Iterator<T> iterator() {
-            return t;
-          }
+          public Tuple2<K, WindowedValue<KV<K, V>>> call(
+              WindowedValue<KV<K, V>> windowedKv) throws Exception {
+                return new Tuple2<>(windowedKv.getValue().getKey(), windowedKv);
+              }
         };
       }
-    };
-  }
 
   /**
    * A utility class to filter {@link TupleTag}s.

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
index 9451df7..e90b490 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
@@ -31,6 +31,7 @@ import org.apache.beam.runners.spark.aggregators.SparkAggregators;
 import org.apache.beam.runners.spark.io.ConsoleIO;
 import org.apache.beam.runners.spark.io.CreateStream;
 import org.apache.beam.runners.spark.io.SparkUnboundedSource;
+import org.apache.beam.runners.spark.stateful.SparkGroupAlsoByWindowViaWindowSet;
 import org.apache.beam.runners.spark.metrics.MetricsAccumulator;
 import org.apache.beam.runners.spark.metrics.SparkMetricsContainer;
 import org.apache.beam.runners.spark.translation.BoundedDataset;
@@ -148,7 +149,7 @@ final class StreamingTransformTranslator {
           Dataset dataset = context.borrowDataset(pcol);
           if (dataset instanceof UnboundedDataset) {
             UnboundedDataset<T> unboundedDataset = (UnboundedDataset<T>) dataset;
-            streamingSources.addAll(unboundedDataset.getStreamingSources());
+            streamingSources.addAll(unboundedDataset.getStreamSources());
             dStreams.add(unboundedDataset.getDStream());
           } else {
             rdds.add(((BoundedDataset<T>) dataset).getRDD());
@@ -205,7 +206,7 @@ final class StreamingTransformTranslator {
         //--- then we apply windowing to the elements
         if (TranslationUtils.skipAssignWindows(transform, context)) {
           context.putDataset(transform,
-              new UnboundedDataset<>(windowedDStream, unboundedDataset.getStreamingSources()));
+              new UnboundedDataset<>(windowedDStream, unboundedDataset.getStreamSources()));
         } else {
           JavaDStream<WindowedValue<T>> outStream = windowedDStream.transform(
               new Function<JavaRDD<WindowedValue<T>>, JavaRDD<WindowedValue<T>>>() {
@@ -215,42 +216,55 @@ final class StreamingTransformTranslator {
             }
           });
           context.putDataset(transform,
-              new UnboundedDataset<>(outStream, unboundedDataset.getStreamingSources()));
+              new UnboundedDataset<>(outStream, unboundedDataset.getStreamSources()));
         }
       }
     };
   }
 
-  private static <K, V> TransformEvaluator<GroupByKey<K, V>> groupByKey() {
+  private static <K, V, W extends BoundedWindow> TransformEvaluator<GroupByKey<K, V>> groupByKey() {
     return new TransformEvaluator<GroupByKey<K, V>>() {
       @Override
       public void evaluate(GroupByKey<K, V> transform, EvaluationContext context) {
-        @SuppressWarnings("unchecked")
-        UnboundedDataset<KV<K, V>> unboundedDataset =
-            ((UnboundedDataset<KV<K, V>>) context.borrowDataset(transform));
-        JavaDStream<WindowedValue<KV<K, V>>> dStream = unboundedDataset.getDStream();
-
+        @SuppressWarnings("unchecked") UnboundedDataset<KV<K, V>> inputDataset =
+            (UnboundedDataset<KV<K, V>>) context.borrowDataset(transform);
+        List<Integer> streamSources = inputDataset.getStreamSources();
+        JavaDStream<WindowedValue<KV<K, V>>> dStream = inputDataset.getDStream();
         @SuppressWarnings("unchecked")
         final KvCoder<K, V> coder = (KvCoder<K, V>) context.getInput(transform).getCoder();
-
         final SparkRuntimeContext runtimeContext = context.getRuntimeContext();
-        final WindowingStrategy<?, ?> windowingStrategy =
-            context.getInput(transform).getWindowingStrategy();
+        @SuppressWarnings("unchecked")
+        final WindowingStrategy<?, W> windowingStrategy =
+            (WindowingStrategy<?, W>) context.getInput(transform).getWindowingStrategy();
+        @SuppressWarnings("unchecked")
+        final WindowFn<Object, W> windowFn = (WindowFn<Object, W>) windowingStrategy.getWindowFn();
 
-        JavaDStream<WindowedValue<KV<K, Iterable<V>>>> outStream =
+        //--- coders.
+        final WindowedValue.WindowedValueCoder<V> wvCoder =
+            WindowedValue.FullWindowedValueCoder.of(coder.getValueCoder(), windowFn.windowCoder());
+
+        //--- group by key only.
+        JavaDStream<WindowedValue<KV<K, Iterable<WindowedValue<V>>>>> groupedByKeyStream =
             dStream.transform(new Function<JavaRDD<WindowedValue<KV<K, V>>>,
-                JavaRDD<WindowedValue<KV<K, Iterable<V>>>>>() {
-          @Override
-          public JavaRDD<WindowedValue<KV<K, Iterable<V>>>> call(
-              JavaRDD<WindowedValue<KV<K, V>>> rdd) throws Exception {
-            final Accumulator<NamedAggregators> accum =
-                SparkAggregators.getNamedAggregators(new JavaSparkContext(rdd.context()));
-            return GroupCombineFunctions.groupByKey(rdd, accum, coder, runtimeContext,
-                windowingStrategy);
-          }
-        });
-        context.putDataset(transform,
-            new UnboundedDataset<>(outStream, unboundedDataset.getStreamingSources()));
+                JavaRDD<WindowedValue<KV<K, Iterable<WindowedValue<V>>>>>>() {
+                  @Override
+                  public JavaRDD<WindowedValue<KV<K, Iterable<WindowedValue<V>>>>> call(
+                      JavaRDD<WindowedValue<KV<K, V>>> rdd) throws Exception {
+                        return GroupCombineFunctions.groupByKeyOnly(
+                            rdd, coder.getKeyCoder(), wvCoder);
+                      }
+                });
+
+        //--- now group also by window.
+        JavaDStream<WindowedValue<KV<K, Iterable<V>>>> outStream =
+            SparkGroupAlsoByWindowViaWindowSet.groupAlsoByWindow(
+                groupedByKeyStream,
+                coder.getValueCoder(),
+                windowingStrategy,
+                runtimeContext,
+                streamSources);
+
+        context.putDataset(transform, new UnboundedDataset<>(outStream, streamSources));
       }
     };
   }
@@ -296,96 +310,7 @@ final class StreamingTransformTranslator {
                 });
 
         context.putDataset(transform,
-            new UnboundedDataset<>(outStream, unboundedDataset.getStreamingSources()));
-      }
-    };
-  }
-
-  private static <InputT, AccumT, OutputT> TransformEvaluator<Combine.Globally<InputT, OutputT>>
-  combineGlobally() {
-    return new TransformEvaluator<Combine.Globally<InputT, OutputT>>() {
-
-      @Override
-      public void evaluate(
-          final Combine.Globally<InputT, OutputT> transform,
-          EvaluationContext context) {
-        final PCollection<InputT> input = context.getInput(transform);
-        // serializable arguments to pass.
-        final Coder<InputT> iCoder = context.getInput(transform).getCoder();
-        final Coder<OutputT> oCoder = context.getOutput(transform).getCoder();
-        @SuppressWarnings("unchecked")
-        final CombineWithContext.CombineFnWithContext<InputT, AccumT, OutputT> combineFn =
-            (CombineWithContext.CombineFnWithContext<InputT, AccumT, OutputT>)
-                CombineFnUtil.toFnWithContext(transform.getFn());
-        final WindowingStrategy<?, ?> windowingStrategy = input.getWindowingStrategy();
-        final SparkRuntimeContext runtimeContext = context.getRuntimeContext();
-        final boolean hasDefault = transform.isInsertDefault();
-        final SparkPCollectionView pviews = context.getPViews();
-
-        @SuppressWarnings("unchecked")
-        UnboundedDataset<InputT> unboundedDataset =
-            ((UnboundedDataset<InputT>) context.borrowDataset(transform));
-        JavaDStream<WindowedValue<InputT>> dStream = unboundedDataset.getDStream();
-
-        JavaDStream<WindowedValue<OutputT>> outStream = dStream.transform(
-            new Function<JavaRDD<WindowedValue<InputT>>, JavaRDD<WindowedValue<OutputT>>>() {
-          @Override
-          public JavaRDD<WindowedValue<OutputT>> call(JavaRDD<WindowedValue<InputT>> rdd)
-              throws Exception {
-            final Map<TupleTag<?>, KV<WindowingStrategy<?, ?>, SideInputBroadcast<?>>> sideInputs =
-                TranslationUtils.getSideInputs(transform.getSideInputs(),
-                    JavaSparkContext.fromSparkContext(rdd.context()),
-                    pviews);
-            return GroupCombineFunctions.combineGlobally(rdd, combineFn, iCoder, oCoder,
-                runtimeContext, windowingStrategy, sideInputs, hasDefault);
-          }
-        });
-
-        context.putDataset(transform,
-            new UnboundedDataset<>(outStream, unboundedDataset.getStreamingSources()));
-      }
-    };
-  }
-
-  private static <K, InputT, AccumT, OutputT>
-  TransformEvaluator<Combine.PerKey<K, InputT, OutputT>> combinePerKey() {
-    return new TransformEvaluator<Combine.PerKey<K, InputT, OutputT>>() {
-      @Override
-      public void evaluate(final Combine.PerKey<K, InputT, OutputT> transform,
-                           final EvaluationContext context) {
-        final PCollection<KV<K, InputT>> input = context.getInput(transform);
-        // serializable arguments to pass.
-        final KvCoder<K, InputT> inputCoder =
-            (KvCoder<K, InputT>) context.getInput(transform).getCoder();
-        @SuppressWarnings("unchecked")
-        final CombineWithContext.KeyedCombineFnWithContext<K, InputT, AccumT, OutputT> combineFn =
-            (CombineWithContext.KeyedCombineFnWithContext<K, InputT, AccumT, OutputT>)
-                CombineFnUtil.toFnWithContext(transform.getFn());
-        final WindowingStrategy<?, ?> windowingStrategy = input.getWindowingStrategy();
-        final SparkRuntimeContext runtimeContext = context.getRuntimeContext();
-        final SparkPCollectionView pviews = context.getPViews();
-
-        @SuppressWarnings("unchecked")
-        UnboundedDataset<KV<K, InputT>> unboundedDataset =
-            ((UnboundedDataset<KV<K, InputT>>) context.borrowDataset(transform));
-        JavaDStream<WindowedValue<KV<K, InputT>>> dStream = unboundedDataset.getDStream();
-
-        JavaDStream<WindowedValue<KV<K, OutputT>>> outStream =
-            dStream.transform(new Function<JavaRDD<WindowedValue<KV<K, InputT>>>,
-                JavaRDD<WindowedValue<KV<K, OutputT>>>>() {
-          @Override
-          public JavaRDD<WindowedValue<KV<K, OutputT>>> call(
-              JavaRDD<WindowedValue<KV<K, InputT>>> rdd) throws Exception {
-            final Map<TupleTag<?>, KV<WindowingStrategy<?, ?>, SideInputBroadcast<?>>> sideInputs =
-                TranslationUtils.getSideInputs(transform.getSideInputs(),
-                    JavaSparkContext.fromSparkContext(rdd.context()),
-                    pviews);
-            return GroupCombineFunctions.combinePerKey(rdd, combineFn, inputCoder, runtimeContext,
-                windowingStrategy, sideInputs);
-          }
-        });
-        context.putDataset(transform,
-            new UnboundedDataset<>(outStream, unboundedDataset.getStreamingSources()));
+            new UnboundedDataset<>(outStream, unboundedDataset.getStreamSources()));
       }
     };
   }
@@ -431,7 +356,7 @@ final class StreamingTransformTranslator {
         });
 
         context.putDataset(transform,
-            new UnboundedDataset<>(outStream, unboundedDataset.getStreamingSources()));
+            new UnboundedDataset<>(outStream, unboundedDataset.getStreamSources()));
       }
     };
   }
@@ -486,7 +411,7 @@ final class StreamingTransformTranslator {
               (JavaDStream<WindowedValue<Object>>)
                   (JavaDStream<?>) TranslationUtils.dStreamValues(filtered);
           context.putDataset(e.getValue(),
-              new UnboundedDataset<>(values, unboundedDataset.getStreamingSources()));
+              new UnboundedDataset<>(values, unboundedDataset.getStreamSources()));
         }
       }
     };
@@ -499,8 +424,6 @@ final class StreamingTransformTranslator {
     EVALUATORS.put(Read.Unbounded.class, readUnbounded());
     EVALUATORS.put(GroupByKey.class, groupByKey());
     EVALUATORS.put(Combine.GroupedValues.class, combineGrouped());
-    EVALUATORS.put(Combine.Globally.class, combineGlobally());
-    EVALUATORS.put(Combine.PerKey.class, combinePerKey());
     EVALUATORS.put(ParDo.Bound.class, parDo());
     EVALUATORS.put(ParDo.BoundMulti.class, multiDo());
     EVALUATORS.put(ConsoleIO.Write.Unbound.class, print());
@@ -523,7 +446,7 @@ final class StreamingTransformTranslator {
     @Override
     public boolean hasTranslation(Class<? extends PTransform<?, ?>> clazz) {
       // streaming includes rdd/bounded transformations as well
-      return EVALUATORS.containsKey(clazz) || batchTranslator.hasTranslation(clazz);
+      return EVALUATORS.containsKey(clazz);
     }
 
     @Override

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
index 6f5fa93..8624f41 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
@@ -56,11 +56,11 @@ public class UnboundedDataset<T> implements Dataset {
   // should be greater > 1 in case of Flatten for example.
   // when using GlobalWatermarkHolder this information helps to take only the relevant watermarks
   // and reason about them accordingly.
-  private final List<Integer> streamingSources = new ArrayList<>();
+  private final List<Integer> streamSources = new ArrayList<>();
 
-  public UnboundedDataset(JavaDStream<WindowedValue<T>> dStream, List<Integer> streamingSources) {
+  public UnboundedDataset(JavaDStream<WindowedValue<T>> dStream, List<Integer> streamSources) {
     this.dStream = dStream;
-    this.streamingSources.addAll(streamingSources);
+    this.streamSources.addAll(streamSources);
   }
 
   public UnboundedDataset(Iterable<Iterable<T>> values, JavaStreamingContext jssc, Coder<T> coder) {
@@ -68,7 +68,7 @@ public class UnboundedDataset<T> implements Dataset {
     this.jssc = jssc;
     this.coder = coder;
     // QueuedStream will have a negative (decreasing) unique id.
-    this.streamingSources.add(queuedStreamIds.decrementAndGet());
+    this.streamSources.add(queuedStreamIds.decrementAndGet());
   }
 
   @VisibleForTesting
@@ -97,8 +97,8 @@ public class UnboundedDataset<T> implements Dataset {
     return dStream;
   }
 
-  public List<Integer> getStreamingSources() {
-    return streamingSources;
+  public List<Integer> getStreamSources() {
+    return streamSources;
   }
 
   public void cache() {

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
index 96e6ee5..18689bd 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
@@ -89,4 +89,4 @@ public class LateDataUtils {
               }
             });
   }
-}
\ No newline at end of file
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
index 6de7e86..96d889d 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
@@ -49,4 +49,4 @@ public class UnsupportedSideInputReader implements SideInputReader {
     throw new UnsupportedOperationException(
         String.format("%s does not support side inputs.", transformName));
   }
-}
\ No newline at end of file
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/96abe4f0/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
index fbe5777..8449724 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
@@ -157,7 +157,7 @@ public class TrackStreamingSourcesTest {
         ctxt.setCurrentTransform(appliedTransform);
         //noinspection unchecked
         Dataset dataset = ctxt.borrowDataset((PTransform<? extends PValue, ?>) transform);
-        assertSourceIds(((UnboundedDataset<?>) dataset).getStreamingSources());
+        assertSourceIds(((UnboundedDataset<?>) dataset).getStreamSources());
         ctxt.setCurrentTransform(null);
       } else {
         evaluator.visitPrimitiveTransform(node);


[22/23] beam git commit: Streaming tests, especially the ones using checkpoints, need a time buffer to finish.

Posted by am...@apache.org.
Streaming tests, especially the ones using checkpoints, need a time buffer to finish.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/2c707431
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/2c707431
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/2c707431

Branch: refs/heads/master
Commit: 2c70743121e3da352346c0db4d718c757e36dbe8
Parents: 3c94ff2
Author: Sela <an...@paypal.com>
Authored: Tue Feb 28 16:16:00 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:11 2017 +0200

----------------------------------------------------------------------
 .../translation/streaming/ResumeFromCheckpointStreamingTest.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/2c707431/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
index 4eea383..7706777 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
@@ -166,7 +166,7 @@ public class ResumeFromCheckpointStreamingTest {
 
     // first run will read from Kafka backlog - "auto.offset.reset=smallest"
     SparkPipelineResult res = run(options);
-    res.waitUntilFinish(Duration.standardSeconds(2));
+    res.waitUntilFinish(Duration.standardSeconds(5));
     // assertions 1:
     long processedMessages1 = res.getAggregatorValue("processedMessages", Long.class);
     assertThat(
@@ -193,7 +193,7 @@ public class ResumeFromCheckpointStreamingTest {
 
     // recovery should resume from last read offset, and read the second batch of input.
     res = runAgain(options);
-    res.waitUntilFinish(Duration.standardSeconds(2));
+    res.waitUntilFinish(Duration.standardSeconds(5));
     // assertions 2:
     long processedMessages2 = res.getAggregatorValue("processedMessages", Long.class);
     assertThat(


[19/23] beam git commit: Move LateDataUtils and UnsupportedSideInputReader to runners-core.

Posted by am...@apache.org.
Move LateDataUtils and UnsupportedSideInputReader to runners-core.

Add missing licenses.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/123f4820
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/123f4820
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/123f4820

Branch: refs/heads/master
Commit: 123f4820b68dd13690be59a7b8b946e81031b6a7
Parents: 4ca5680
Author: Sela <an...@paypal.com>
Authored: Mon Feb 27 20:24:54 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:07 2017 +0200

----------------------------------------------------------------------
 .../apache/beam/runners/core/LateDataUtils.java | 88 +++++++++++++++++++
 .../core/UnsupportedSideInputReader.java        | 52 +++++++++++
 .../runners/spark/TestSparkPipelineOptions.java | 17 ++++
 .../SparkGroupAlsoByWindowViaWindowSet.java     |  4 +-
 .../beam/runners/spark/util/LateDataUtils.java  | 92 --------------------
 .../spark/util/UnsupportedSideInputReader.java  | 52 -----------
 .../apache/beam/runners/spark/PipelineRule.java | 17 ++++
 7 files changed, 176 insertions(+), 146 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/123f4820/runners/core-java/src/main/java/org/apache/beam/runners/core/LateDataUtils.java
----------------------------------------------------------------------
diff --git a/runners/core-java/src/main/java/org/apache/beam/runners/core/LateDataUtils.java b/runners/core-java/src/main/java/org/apache/beam/runners/core/LateDataUtils.java
new file mode 100644
index 0000000..17bd360
--- /dev/null
+++ b/runners/core-java/src/main/java/org/apache/beam/runners/core/LateDataUtils.java
@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.core;
+
+import com.google.common.base.Function;
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
+import com.google.common.collect.Iterables;
+import javax.annotation.Nullable;
+import org.apache.beam.sdk.transforms.Aggregator;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.util.WindowTracing;
+import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.util.WindowingStrategy;
+
+
+/**
+ * Utils to handle late data.
+ */
+public class LateDataUtils {
+
+  /**
+   * Returns an {@code Iterable<WindowedValue<InputT>>} that only contains non-late input elements.
+   */
+  public static <K, V> Iterable<WindowedValue<V>> dropExpiredWindows(
+      final K key,
+      Iterable<WindowedValue<V>> elements,
+      final TimerInternals timerInternals,
+      final WindowingStrategy<?, ?> windowingStrategy,
+      final Aggregator<Long, Long> droppedDueToLateness) {
+    return FluentIterable.from(elements)
+        .transformAndConcat(
+            // Explode windows to filter out expired ones
+            new Function<WindowedValue<V>, Iterable<WindowedValue<V>>>() {
+              @Override
+              public Iterable<WindowedValue<V>> apply(@Nullable WindowedValue<V> input) {
+                if (input == null) {
+                  return null;
+                }
+                return input.explodeWindows();
+              }
+            })
+        .filter(
+            new Predicate<WindowedValue<V>>() {
+              @Override
+              public boolean apply(@Nullable WindowedValue<V> input) {
+                if (input == null) {
+                  // drop null elements.
+                  return false;
+                }
+                BoundedWindow window = Iterables.getOnlyElement(input.getWindows());
+                boolean expired =
+                    window
+                        .maxTimestamp()
+                        .plus(windowingStrategy.getAllowedLateness())
+                        .isBefore(timerInternals.currentInputWatermarkTime());
+                if (expired) {
+                  // The element is too late for this window.
+                  droppedDueToLateness.addValue(1L);
+                  WindowTracing.debug(
+                      "GroupAlsoByWindow: Dropping element at {} for key: {}; "
+                          + "window: {} since it is too far behind inputWatermark: {}",
+                      input.getTimestamp(),
+                      key,
+                      window,
+                      timerInternals.currentInputWatermarkTime());
+                }
+                // Keep the element if the window is not expired.
+                return !expired;
+              }
+            });
+  }
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/123f4820/runners/core-java/src/main/java/org/apache/beam/runners/core/UnsupportedSideInputReader.java
----------------------------------------------------------------------
diff --git a/runners/core-java/src/main/java/org/apache/beam/runners/core/UnsupportedSideInputReader.java b/runners/core-java/src/main/java/org/apache/beam/runners/core/UnsupportedSideInputReader.java
new file mode 100644
index 0000000..4230f8c
--- /dev/null
+++ b/runners/core-java/src/main/java/org/apache/beam/runners/core/UnsupportedSideInputReader.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.core;
+
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.util.SideInputReader;
+import org.apache.beam.sdk.values.PCollectionView;
+
+
+/**
+ * An implementation of a {@link SideInputReader} that actually does not support side-inputs.
+ */
+public class UnsupportedSideInputReader implements SideInputReader {
+  private final String transformName;
+
+  public UnsupportedSideInputReader(String transformName) {
+    this.transformName = transformName;
+  }
+
+  @Override
+  public <T> T get(PCollectionView<T> view, BoundedWindow window) {
+    throw new UnsupportedOperationException(
+        String.format("%s does not support side inputs.", transformName));
+  }
+
+  @Override
+  public <T> boolean contains(PCollectionView<T> view) {
+    throw new UnsupportedOperationException(
+        String.format("%s does not support side inputs.", transformName));
+  }
+
+  @Override
+  public boolean isEmpty() {
+    throw new UnsupportedOperationException(
+        String.format("%s does not support side inputs.", transformName));
+  }
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/123f4820/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java
index 2cb58d8..d50b652 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.beam.runners.spark;
 
 import org.apache.beam.sdk.options.Default;

http://git-wip-us.apache.org/repos/asf/beam/blob/123f4820/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
index 24b8508..2f1713a 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
@@ -24,10 +24,12 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import org.apache.beam.runners.core.GroupAlsoByWindowsDoFn;
+import org.apache.beam.runners.core.LateDataUtils;
 import org.apache.beam.runners.core.OutputWindowedValue;
 import org.apache.beam.runners.core.ReduceFnRunner;
 import org.apache.beam.runners.core.SystemReduceFn;
 import org.apache.beam.runners.core.TimerInternals;
+import org.apache.beam.runners.core.UnsupportedSideInputReader;
 import org.apache.beam.runners.core.triggers.ExecutableTriggerStateMachine;
 import org.apache.beam.runners.core.triggers.TriggerStateMachines;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
@@ -37,8 +39,6 @@ import org.apache.beam.runners.spark.translation.TranslationUtils;
 import org.apache.beam.runners.spark.translation.WindowingHelpers;
 import org.apache.beam.runners.spark.util.ByteArray;
 import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
-import org.apache.beam.runners.spark.util.LateDataUtils;
-import org.apache.beam.runners.spark.util.UnsupportedSideInputReader;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.IterableCoder;
 import org.apache.beam.sdk.coders.KvCoder;

http://git-wip-us.apache.org/repos/asf/beam/blob/123f4820/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
deleted file mode 100644
index 18689bd..0000000
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.util;
-
-import com.google.common.base.Function;
-import com.google.common.base.Predicate;
-import com.google.common.collect.FluentIterable;
-import com.google.common.collect.Iterables;
-import javax.annotation.Nullable;
-import org.apache.beam.runners.core.TimerInternals;
-import org.apache.beam.sdk.transforms.Aggregator;
-import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
-import org.apache.beam.sdk.util.WindowTracing;
-import org.apache.beam.sdk.util.WindowedValue;
-import org.apache.beam.sdk.util.WindowingStrategy;
-
-
-/**
- * Utils to handle late data.
- */
-public class LateDataUtils {
-
-  /**
-   * Returns an {@code Iterable<WindowedValue<InputT>>} that only contains non-late input
-   * elements.
-   * Taken from Thomas Groh's implementation in the DirectRunner's
-   * GroupAlsoByWindowEvaluatorFactory.
-   */
-  public static <K, V> Iterable<WindowedValue<V>> dropExpiredWindows(
-      final K key,
-      Iterable<WindowedValue<V>> elements,
-      final TimerInternals timerInternals,
-      final WindowingStrategy<?, ?> windowingStrategy,
-      final Aggregator<Long, Long> droppedDueToLateness) {
-    return FluentIterable.from(elements)
-        .transformAndConcat(
-            // Explode windows to filter out expired ones
-            new Function<WindowedValue<V>, Iterable<WindowedValue<V>>>() {
-              @Override
-              public Iterable<WindowedValue<V>> apply(@Nullable WindowedValue<V> input) {
-                if (input == null) {
-                  return null;
-                }
-                return input.explodeWindows();
-              }
-            })
-        .filter(
-            new Predicate<WindowedValue<V>>() {
-              @Override
-              public boolean apply(@Nullable WindowedValue<V> input) {
-                if (input == null) {
-                  // drop null elements.
-                  return false;
-                }
-                BoundedWindow window = Iterables.getOnlyElement(input.getWindows());
-                boolean expired =
-                    window
-                        .maxTimestamp()
-                        .plus(windowingStrategy.getAllowedLateness())
-                        .isBefore(timerInternals.currentInputWatermarkTime());
-                if (expired) {
-                  // The element is too late for this window.
-                  droppedDueToLateness.addValue(1L);
-                  WindowTracing.debug(
-                      "GroupAlsoByWindow: Dropping element at {} for key: {}; "
-                          + "window: {} since it is too far behind inputWatermark: {}",
-                      input.getTimestamp(),
-                      key,
-                      window,
-                      timerInternals.currentInputWatermarkTime());
-                }
-                // Keep the element if the window is not expired.
-                return !expired;
-              }
-            });
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/123f4820/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
deleted file mode 100644
index 96d889d..0000000
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.util;
-
-import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
-import org.apache.beam.sdk.util.SideInputReader;
-import org.apache.beam.sdk.values.PCollectionView;
-
-
-/**
- * An implementation of a {@link SideInputReader} that actually does not support side-inputs.
- */
-public class UnsupportedSideInputReader implements SideInputReader {
-  private final String transformName;
-
-  public UnsupportedSideInputReader(String transformName) {
-    this.transformName = transformName;
-  }
-
-  @Override
-  public <T> T get(PCollectionView<T> view, BoundedWindow window) {
-    throw new UnsupportedOperationException(
-        String.format("%s does not support side inputs.", transformName));
-  }
-
-  @Override
-  public <T> boolean contains(PCollectionView<T> view) {
-    throw new UnsupportedOperationException(
-        String.format("%s does not support side inputs.", transformName));
-  }
-
-  @Override
-  public boolean isEmpty() {
-    throw new UnsupportedOperationException(
-        String.format("%s does not support side inputs.", transformName));
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/123f4820/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java
index bb42510..77519cd 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.beam.runners.spark;
 
 import org.apache.beam.sdk.Pipeline;


[06/23] beam git commit: Utils for SparkGroupAlsoByWindowViaWindowSet.

Posted by am...@apache.org.
Utils for SparkGroupAlsoByWindowViaWindowSet.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/8c379704
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/8c379704
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/8c379704

Branch: refs/heads/master
Commit: 8c3797047a6e971fdeb7882d1765f66a63109255
Parents: 32a9d61
Author: Sela <an...@paypal.com>
Authored: Mon Feb 13 16:33:14 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:59 2017 +0200

----------------------------------------------------------------------
 .../spark/stateful/SparkStateInternals.java     | 402 +++++++++++++++++++
 .../spark/stateful/SparkTimerInternals.java     | 173 ++++++++
 .../beam/runners/spark/util/LateDataUtils.java  |  92 +++++
 .../spark/util/UnsupportedSideInputReader.java  |  52 +++
 4 files changed, 719 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/8c379704/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
new file mode 100644
index 0000000..e628d31
--- /dev/null
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
@@ -0,0 +1,402 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark.stateful;
+
+import com.google.common.collect.HashBasedTable;
+import com.google.common.collect.Table;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.apache.beam.runners.spark.coders.CoderHelpers;
+import org.apache.beam.runners.core.StateInternals;
+import org.apache.beam.runners.core.StateNamespace;
+import org.apache.beam.runners.core.StateTag;
+import org.apache.beam.runners.core.StateTag.StateBinder;
+import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.coders.InstantCoder;
+import org.apache.beam.sdk.coders.ListCoder;
+import org.apache.beam.sdk.transforms.Combine.CombineFn;
+import org.apache.beam.sdk.transforms.Combine.KeyedCombineFn;
+import org.apache.beam.sdk.transforms.CombineWithContext.KeyedCombineFnWithContext;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.transforms.windowing.OutputTimeFn;
+import org.apache.beam.sdk.util.CombineFnUtil;
+import org.apache.beam.sdk.util.state.AccumulatorCombiningState;
+import org.apache.beam.sdk.util.state.BagState;
+import org.apache.beam.sdk.util.state.ReadableState;
+import org.apache.beam.sdk.util.state.State;
+import org.apache.beam.sdk.util.state.StateContext;
+import org.apache.beam.sdk.util.state.StateContexts;
+import org.apache.beam.sdk.util.state.ValueState;
+import org.apache.beam.sdk.util.state.WatermarkHoldState;
+import org.joda.time.Instant;
+
+
+/**
+ * An implementation of {@link StateInternals} for the SparkRunner.
+ */
+class SparkStateInternals<K> implements StateInternals<K> {
+
+  private final K key;
+  //Serializable state for internals (namespace to state tag to coded value).
+  private final Table<String, String, byte[]> stateTable;
+
+  private SparkStateInternals(K key) {
+    this.key = key;
+    this.stateTable = HashBasedTable.create();
+  }
+
+  private SparkStateInternals(K key, Table<String, String, byte[]> stateTable) {
+    this.key = key;
+    this.stateTable = stateTable;
+  }
+
+  static <K> SparkStateInternals<K> forKey(K key) {
+    return new SparkStateInternals<>(key);
+  }
+
+  static <K> SparkStateInternals<K>
+      forKeyAndState(K key, Table<String, String, byte[]> stateTable) {
+    return new SparkStateInternals<>(key, stateTable);
+  }
+
+  public Table<String, String, byte[]> getState() {
+    return stateTable;
+  }
+
+  @Override
+  public K getKey() {
+    return key;
+  }
+
+  @Override
+  public <T extends State> T state(StateNamespace namespace, StateTag<? super K, T> address) {
+    return state(namespace, address, StateContexts.nullContext());
+  }
+
+  @Override
+  public <T extends State> T state(
+      StateNamespace namespace,
+      StateTag<? super K, T> address,
+      StateContext<?> c) {
+    return address.bind(new SparkStateBinder(key, namespace, c));
+  }
+
+  private class SparkStateBinder implements StateBinder<K> {
+    private final K key;
+    private final StateNamespace namespace;
+    private final StateContext<?> c;
+
+    private SparkStateBinder(K key,
+                             StateNamespace namespace,
+                             StateContext<?> c) {
+      this.key = key;
+      this.namespace = namespace;
+      this.c = c;
+    }
+
+    @Override
+    public <T> ValueState<T> bindValue(StateTag<? super K, ValueState<T>> address, Coder<T> coder) {
+      return new SparkValueState<>(namespace, address, coder);
+    }
+
+    @Override
+    public <T> BagState<T> bindBag(StateTag<? super K, BagState<T>> address, Coder<T> elemCoder) {
+      return new SparkBagState<>(namespace, address, elemCoder);
+    }
+
+    @Override
+    public <InputT, AccumT, OutputT> AccumulatorCombiningState<InputT, AccumT, OutputT>
+        bindCombiningValue(
+            StateTag<? super K, AccumulatorCombiningState<InputT, AccumT, OutputT>> address,
+            Coder<AccumT> accumCoder,
+            CombineFn<InputT, AccumT, OutputT> combineFn) {
+      return new SparkAccumulatorCombiningState<>(namespace, address, accumCoder, key,
+          combineFn.<K>asKeyedFn());
+    }
+
+    @Override
+    public <InputT, AccumT, OutputT> AccumulatorCombiningState<InputT, AccumT, OutputT>
+        bindKeyedCombiningValue(
+            StateTag<? super K, AccumulatorCombiningState<InputT, AccumT, OutputT>> address,
+            Coder<AccumT> accumCoder,
+            KeyedCombineFn<? super K, InputT, AccumT, OutputT> combineFn) {
+      return new SparkAccumulatorCombiningState<>(namespace, address, accumCoder, key, combineFn);
+    }
+
+    @Override
+    public <InputT, AccumT, OutputT> AccumulatorCombiningState<InputT, AccumT, OutputT>
+        bindKeyedCombiningValueWithContext(
+            StateTag<? super K, AccumulatorCombiningState<InputT, AccumT, OutputT>> address,
+            Coder<AccumT> accumCoder,
+            KeyedCombineFnWithContext<? super K, InputT, AccumT, OutputT> combineFn) {
+      return new SparkAccumulatorCombiningState<>(namespace, address, accumCoder, key,
+          CombineFnUtil.bindContext(combineFn, c));
+    }
+
+    @Override
+    public <W extends BoundedWindow> WatermarkHoldState<W> bindWatermark(
+        StateTag<? super K, WatermarkHoldState<W>> address,
+        OutputTimeFn<? super W> outputTimeFn) {
+      return new SparkWatermarkHoldState<>(namespace, address, outputTimeFn);
+    }
+  }
+
+  private class AbstractState<T> {
+    final StateNamespace namespace;
+    final StateTag<?, ? extends State> address;
+    final Coder<T> coder;
+
+    private AbstractState(
+        StateNamespace namespace,
+        StateTag<?, ? extends State> address,
+        Coder<T> coder) {
+      this.namespace = namespace;
+      this.address = address;
+      this.coder = coder;
+    }
+
+    T readValue() {
+      byte[] buf = stateTable.get(namespace.stringKey(), address.getId());
+      if (buf != null) {
+        return CoderHelpers.fromByteArray(buf, coder);
+      }
+      return null;
+    }
+
+    void writeValue(T input) {
+      stateTable.put(namespace.stringKey(), address.getId(),
+          CoderHelpers.toByteArray(input, coder));
+    }
+
+    public void clear() {
+      stateTable.remove(namespace.stringKey(), address.getId());
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      @SuppressWarnings("unchecked")
+      AbstractState<?> that = (AbstractState<?>) o;
+      return namespace.equals(that.namespace) && address.equals(that.address);
+    }
+
+    @Override
+    public int hashCode() {
+      int result = namespace.hashCode();
+      result = 31 * result + address.hashCode();
+      return result;
+    }
+  }
+
+  private class SparkValueState<T> extends AbstractState<T> implements ValueState<T> {
+
+    private SparkValueState(
+            StateNamespace namespace,
+            StateTag<?, ValueState<T>> address,
+            Coder<T> coder) {
+      super(namespace, address, coder);
+    }
+
+    @Override
+    public SparkValueState<T> readLater() {
+      return this;
+    }
+
+    @Override
+    public T read() {
+      return readValue();
+    }
+
+    @Override
+    public void write(T input) {
+      writeValue(input);
+    }
+  }
+
+  private class SparkWatermarkHoldState<W extends BoundedWindow>
+      extends AbstractState<Instant> implements WatermarkHoldState<W> {
+
+    private final OutputTimeFn<? super W> outputTimeFn;
+
+    public SparkWatermarkHoldState(
+        StateNamespace namespace,
+        StateTag<?, WatermarkHoldState<W>> address,
+        OutputTimeFn<? super W> outputTimeFn) {
+      super(namespace, address, InstantCoder.of());
+      this.outputTimeFn = outputTimeFn;
+    }
+
+    @Override
+    public SparkWatermarkHoldState<W> readLater() {
+      return this;
+    }
+
+    @Override
+    public Instant read() {
+      return readValue();
+    }
+
+    @Override
+    public void add(Instant outputTime) {
+      Instant combined = read();
+      combined = (combined == null) ? outputTime : outputTimeFn.combine(combined, outputTime);
+      writeValue(combined);
+    }
+
+    @Override
+    public ReadableState<Boolean> isEmpty() {
+      return new ReadableState<Boolean>() {
+        @Override
+        public ReadableState<Boolean> readLater() {
+          return this;
+        }
+        @Override
+        public Boolean read() {
+          return stateTable.get(namespace.stringKey(), address.getId()) == null;
+        }
+      };
+    }
+
+    @Override
+    public OutputTimeFn<? super W> getOutputTimeFn() {
+      return outputTimeFn;
+    }
+  }
+
+  private class SparkAccumulatorCombiningState<K, InputT, AccumT, OutputT>
+      extends AbstractState<AccumT>
+          implements AccumulatorCombiningState<InputT, AccumT, OutputT> {
+
+    private final K key;
+    private final KeyedCombineFn<? super K, InputT, AccumT, OutputT> combineFn;
+
+    private SparkAccumulatorCombiningState(
+        StateNamespace namespace,
+        StateTag<? super K, AccumulatorCombiningState<InputT, AccumT, OutputT>> address,
+        Coder<AccumT> coder,
+        K key,
+        KeyedCombineFn<? super K, InputT, AccumT, OutputT> combineFn) {
+      super(namespace, address, coder);
+      this.key = key;
+      this.combineFn = combineFn;
+    }
+
+    @Override
+    public SparkAccumulatorCombiningState<K, InputT, AccumT, OutputT> readLater() {
+      return this;
+    }
+
+    @Override
+    public OutputT read() {
+      return combineFn.extractOutput(key, getAccum());
+    }
+
+    @Override
+    public void add(InputT input) {
+      AccumT accum = getAccum();
+      combineFn.addInput(key, accum, input);
+      writeValue(accum);
+    }
+
+    @Override
+    public AccumT getAccum() {
+      AccumT accum = readValue();
+      if (accum == null) {
+        accum = combineFn.createAccumulator(key);
+      }
+      return accum;
+    }
+
+    @Override
+    public ReadableState<Boolean> isEmpty() {
+      return new ReadableState<Boolean>() {
+        @Override
+        public ReadableState<Boolean> readLater() {
+          return this;
+        }
+        @Override
+        public Boolean read() {
+          return stateTable.get(namespace.stringKey(), address.getId()) == null;
+        }
+      };
+    }
+
+    @Override
+    public void addAccum(AccumT accum) {
+      accum = combineFn.mergeAccumulators(key, Arrays.asList(getAccum(), accum));
+      writeValue(accum);
+    }
+
+    @Override
+    public AccumT mergeAccumulators(Iterable<AccumT> accumulators) {
+      return combineFn.mergeAccumulators(key, accumulators);
+    }
+
+  }
+
+  private final class SparkBagState<T> extends AbstractState<List<T>> implements BagState<T> {
+    private SparkBagState(
+        StateNamespace namespace,
+        StateTag<?, BagState<T>> address,
+        Coder<T> coder) {
+      super(namespace, address, ListCoder.of(coder));
+    }
+
+    @Override
+    public SparkBagState<T> readLater() {
+      return this;
+    }
+
+    @Override
+    public List<T> read() {
+      List<T> value = super.readValue();
+      if (value == null) {
+        value = new ArrayList<>();
+      }
+      return value;
+    }
+
+    @Override
+    public void add(T input) {
+      List<T> value = read();
+      value.add(input);
+      writeValue(value);
+    }
+
+    @Override
+    public ReadableState<Boolean> isEmpty() {
+      return new ReadableState<Boolean>() {
+        @Override
+        public ReadableState<Boolean> readLater() {
+          return this;
+        }
+
+        @Override
+        public Boolean read() {
+          return stateTable.get(namespace.stringKey(), address.getId()) == null;
+        }
+      };
+    }
+  }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/beam/blob/8c379704/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
new file mode 100644
index 0000000..65225c5
--- /dev/null
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
@@ -0,0 +1,173 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark.stateful;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.collect.Sets;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
+import org.apache.beam.runners.core.StateNamespace;
+import org.apache.beam.runners.core.TimerInternals;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.util.TimeDomain;
+import org.apache.spark.broadcast.Broadcast;
+import org.joda.time.Instant;
+
+
+/**
+ * An implementation of {@link TimerInternals} for the SparkRunner.
+ */
+class SparkTimerInternals implements TimerInternals {
+  private final Instant lowWatermark;
+  private final Instant highWatermark;
+  private final Instant synchronizedProcessingTime;
+  private final Set<TimerData> timers = Sets.newHashSet();
+
+  private Instant inputWatermark;
+
+  private SparkTimerInternals(
+      Instant lowWatermark, Instant highWatermark, Instant synchronizedProcessingTime) {
+    this.lowWatermark = lowWatermark;
+    this.highWatermark = highWatermark;
+    this.synchronizedProcessingTime = synchronizedProcessingTime;
+  }
+
+  /** Build the {@link TimerInternals} according to the feeding streams. */
+  public static SparkTimerInternals forStreamFromSources(
+      List<Integer> sourceIds,
+      @Nullable Broadcast<Map<Integer, SparkWatermarks>> broadcast) {
+    // if broadcast is invalid for the specific ids, use defaults.
+    if (broadcast == null || broadcast.getValue().isEmpty()
+        || Collections.disjoint(sourceIds, broadcast.getValue().keySet())) {
+      return new SparkTimerInternals(
+          BoundedWindow.TIMESTAMP_MIN_VALUE, BoundedWindow.TIMESTAMP_MIN_VALUE, new Instant(0));
+    }
+    // there might be more than one stream feeding this stream, slowest WM is the right one.
+    Instant slowestLowWatermark = BoundedWindow.TIMESTAMP_MAX_VALUE;
+    Instant slowestHighWatermark = BoundedWindow.TIMESTAMP_MAX_VALUE;
+    // synchronized processing time should clearly be synchronized.
+    Instant synchronizedProcessingTime = null;
+    for (Integer sourceId: sourceIds) {
+      SparkWatermarks sparkWatermarks = broadcast.getValue().get(sourceId);
+      if (sparkWatermarks != null) {
+        // keep slowest WMs.
+        slowestLowWatermark = slowestLowWatermark.isBefore(sparkWatermarks.getLowWatermark())
+            ? slowestLowWatermark : sparkWatermarks.getLowWatermark();
+        slowestHighWatermark = slowestHighWatermark.isBefore(sparkWatermarks.getHighWatermark())
+            ? slowestHighWatermark : sparkWatermarks.getHighWatermark();
+        if (synchronizedProcessingTime == null) {
+          // firstime set.
+          synchronizedProcessingTime = sparkWatermarks.getSynchronizedProcessingTime();
+        } else {
+          // assert on following.
+          checkArgument(
+              sparkWatermarks.getSynchronizedProcessingTime().equals(synchronizedProcessingTime),
+              "Synchronized time is expected to keep synchronized across sources.");
+        }
+      }
+    }
+    return new SparkTimerInternals(
+        slowestLowWatermark, slowestHighWatermark, synchronizedProcessingTime);
+  }
+
+  Collection<TimerData> getTimers() {
+    return timers;
+  }
+
+  /** This should only be called after processing the element. */
+  Collection<TimerData> getTimersReadyToProcess() {
+    Set<TimerData> toFire = Sets.newHashSet();
+    Iterator<TimerData> iterator = timers.iterator();
+    while (iterator.hasNext()) {
+      TimerData timer = iterator.next();
+      if (timer.getTimestamp().isBefore(inputWatermark)) {
+        toFire.add(timer);
+        iterator.remove();
+      }
+    }
+    return toFire;
+  }
+
+  void addTimers(Collection<TimerData> timers) {
+    this.timers.addAll(timers);
+  }
+
+  @Override
+  public void setTimer(TimerData timer) {
+    this.timers.add(timer);
+  }
+
+  @Override
+  public void deleteTimer(StateNamespace namespace, String timerId, TimeDomain timeDomain) {
+    throw new UnsupportedOperationException("Deleting a timer by ID is not yet supported.");
+  }
+
+  @Override
+  public void deleteTimer(TimerData timer) {
+    this.timers.remove(timer);
+  }
+
+  @Override
+  public Instant currentProcessingTime() {
+    return Instant.now();
+  }
+
+  @Nullable
+  @Override
+  public Instant currentSynchronizedProcessingTime() {
+    return synchronizedProcessingTime;
+  }
+
+  @Override
+  public Instant currentInputWatermarkTime() {
+    return inputWatermark;
+  }
+
+  /** Advances the watermark - since */
+  public void advanceWatermark() {
+    inputWatermark = highWatermark;
+  }
+
+  @Nullable
+  @Override
+  public Instant currentOutputWatermarkTime() {
+    return null;
+  }
+
+  @Override
+  public void setTimer(
+      StateNamespace namespace,
+      String timerId,
+      Instant target,
+      TimeDomain timeDomain) {
+    throw new UnsupportedOperationException("Setting a timer by ID not yet supported.");
+  }
+
+  @Override
+  public void deleteTimer(StateNamespace namespace, String timerId) {
+    throw new UnsupportedOperationException("Deleting a timer by ID is not yet supported.");
+  }
+
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/beam/blob/8c379704/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
new file mode 100644
index 0000000..96e6ee5
--- /dev/null
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/LateDataUtils.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark.util;
+
+import com.google.common.base.Function;
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
+import com.google.common.collect.Iterables;
+import javax.annotation.Nullable;
+import org.apache.beam.runners.core.TimerInternals;
+import org.apache.beam.sdk.transforms.Aggregator;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.util.WindowTracing;
+import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.util.WindowingStrategy;
+
+
+/**
+ * Utils to handle late data.
+ */
+public class LateDataUtils {
+
+  /**
+   * Returns an {@code Iterable<WindowedValue<InputT>>} that only contains non-late input
+   * elements.
+   * Taken from Thomas Groh's implementation in the DirectRunner's
+   * GroupAlsoByWindowEvaluatorFactory.
+   */
+  public static <K, V> Iterable<WindowedValue<V>> dropExpiredWindows(
+      final K key,
+      Iterable<WindowedValue<V>> elements,
+      final TimerInternals timerInternals,
+      final WindowingStrategy<?, ?> windowingStrategy,
+      final Aggregator<Long, Long> droppedDueToLateness) {
+    return FluentIterable.from(elements)
+        .transformAndConcat(
+            // Explode windows to filter out expired ones
+            new Function<WindowedValue<V>, Iterable<WindowedValue<V>>>() {
+              @Override
+              public Iterable<WindowedValue<V>> apply(@Nullable WindowedValue<V> input) {
+                if (input == null) {
+                  return null;
+                }
+                return input.explodeWindows();
+              }
+            })
+        .filter(
+            new Predicate<WindowedValue<V>>() {
+              @Override
+              public boolean apply(@Nullable WindowedValue<V> input) {
+                if (input == null) {
+                  // drop null elements.
+                  return false;
+                }
+                BoundedWindow window = Iterables.getOnlyElement(input.getWindows());
+                boolean expired =
+                    window
+                        .maxTimestamp()
+                        .plus(windowingStrategy.getAllowedLateness())
+                        .isBefore(timerInternals.currentInputWatermarkTime());
+                if (expired) {
+                  // The element is too late for this window.
+                  droppedDueToLateness.addValue(1L);
+                  WindowTracing.debug(
+                      "GroupAlsoByWindow: Dropping element at {} for key: {}; "
+                          + "window: {} since it is too far behind inputWatermark: {}",
+                      input.getTimestamp(),
+                      key,
+                      window,
+                      timerInternals.currentInputWatermarkTime());
+                }
+                // Keep the element if the window is not expired.
+                return !expired;
+              }
+            });
+  }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/beam/blob/8c379704/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
new file mode 100644
index 0000000..6de7e86
--- /dev/null
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/util/UnsupportedSideInputReader.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.runners.spark.util;
+
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.util.SideInputReader;
+import org.apache.beam.sdk.values.PCollectionView;
+
+
+/**
+ * An implementation of a {@link SideInputReader} that actually does not support side-inputs.
+ */
+public class UnsupportedSideInputReader implements SideInputReader {
+  private final String transformName;
+
+  public UnsupportedSideInputReader(String transformName) {
+    this.transformName = transformName;
+  }
+
+  @Override
+  public <T> T get(PCollectionView<T> view, BoundedWindow window) {
+    throw new UnsupportedOperationException(
+        String.format("%s does not support side inputs.", transformName));
+  }
+
+  @Override
+  public <T> boolean contains(PCollectionView<T> view) {
+    throw new UnsupportedOperationException(
+        String.format("%s does not support side inputs.", transformName));
+  }
+
+  @Override
+  public boolean isEmpty() {
+    throw new UnsupportedOperationException(
+        String.format("%s does not support side inputs.", transformName));
+  }
+}
\ No newline at end of file


[15/23] beam git commit: Tests that can should run with TestSparkRunner.

Posted by am...@apache.org.
Tests that can should run with TestSparkRunner.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/b88e54a9
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/b88e54a9
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/b88e54a9

Branch: refs/heads/master
Commit: b88e54a9a6b05d25a1f52aa764bd4a802be32b78
Parents: 3867dcd
Author: Sela <an...@paypal.com>
Authored: Mon Feb 20 20:41:00 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:05 2017 +0200

----------------------------------------------------------------------
 .../apache/beam/runners/spark/ForceStreamingTest.java   | 12 +++++++-----
 .../beam/runners/spark/ProvidedSparkContextTest.java    |  2 +-
 .../aggregators/metrics/sink/NamedAggregatorsTest.java  |  2 +-
 3 files changed, 9 insertions(+), 7 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/b88e54a9/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
index 70fcb99..c3026ce 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
@@ -21,13 +21,14 @@ package org.apache.beam.runners.spark;
 import static org.hamcrest.MatcherAssert.assertThat;
 
 import java.io.IOException;
+import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.io.BoundedReadFromUnboundedSource;
 import org.apache.beam.sdk.io.CountingSource;
 import org.apache.beam.sdk.io.Read;
-import org.apache.beam.sdk.options.PipelineOptionsFactory;
 import org.apache.beam.sdk.runners.TransformHierarchy;
 import org.apache.beam.sdk.transforms.PTransform;
+import org.junit.Rule;
 import org.junit.Test;
 
 
@@ -44,13 +45,14 @@ import org.junit.Test;
  */
 public class ForceStreamingTest {
 
+  @Rule
+  public SparkTestPipelineOptionsForStreaming commonOptions =
+      new SparkTestPipelineOptionsForStreaming();
+
   @Test
   public void test() throws IOException {
-    SparkPipelineOptions options = PipelineOptionsFactory.create().as(SparkPipelineOptions.class);
-    options.setRunner(TestSparkRunner.class);
-    // force streaming.
+    SparkPipelineOptions options = commonOptions.getOptions();
     options.setForceStreaming(true);
-
     Pipeline pipeline = Pipeline.create(options);
 
     // apply the BoundedReadFromUnboundedSource.

http://git-wip-us.apache.org/repos/asf/beam/blob/b88e54a9/runners/spark/src/test/java/org/apache/beam/runners/spark/ProvidedSparkContextTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/ProvidedSparkContextTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/ProvidedSparkContextTest.java
index a4190a9..36ba863 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/ProvidedSparkContextTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/ProvidedSparkContextTest.java
@@ -119,7 +119,7 @@ public class ProvidedSparkContextTest {
 
     private static SparkContextOptions getSparkContextOptions(JavaSparkContext jsc) {
         final SparkContextOptions options = PipelineOptionsFactory.as(SparkContextOptions.class);
-        options.setRunner(SparkRunner.class);
+        options.setRunner(TestSparkRunner.class);
         options.setUsesProvidedSparkContext(true);
         options.setProvidedSparkContext(jsc);
         options.setEnableSparkMetricSinks(false);

http://git-wip-us.apache.org/repos/asf/beam/blob/b88e54a9/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
index 8646510..2f7202c 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
@@ -82,7 +82,7 @@ public class NamedAggregatorsTest {
 
     PAssert.that(output).containsInAnyOrder(expectedCounts);
 
-    pipeline.run().waitUntilFinish();
+    pipeline.run();
   }
 
   @Test


[16/23] beam git commit: Batch doesn't use checkpoint dir so nothing to clean.

Posted by am...@apache.org.
Batch doesn't use checkpoint dir so nothing to clean.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/82d754cf
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/82d754cf
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/82d754cf

Branch: refs/heads/master
Commit: 82d754cf46abc0ec7f4fe5c9501944c6472484d7
Parents: b88e54a
Author: Sela <an...@paypal.com>
Authored: Tue Feb 21 16:27:42 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:05 2017 +0200

----------------------------------------------------------------------
 .../beam/runners/spark/TestSparkRunner.java     | 46 ++++++++++----------
 1 file changed, 23 insertions(+), 23 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/82d754cf/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
index d2b5186..5d71ea5 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
@@ -117,17 +117,17 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
   public SparkPipelineResult run(Pipeline pipeline) {
     SparkPipelineOptions sparkOptions = pipeline.getOptions().as(SparkPipelineOptions.class);
     SparkPipelineResult result = null;
-    try {
-      // clear state of Aggregators, Metrics and Watermarks.
-      AggregatorsAccumulator.clear();
-      SparkMetricsContainer.clear();
-      GlobalWatermarkHolder.clear();
+    // clear state of Aggregators, Metrics and Watermarks.
+    AggregatorsAccumulator.clear();
+    SparkMetricsContainer.clear();
+    GlobalWatermarkHolder.clear();
 
-      TestPipelineOptions testPipelineOptions = pipeline.getOptions().as(TestPipelineOptions.class);
-      LOG.info("About to run test pipeline " + sparkOptions.getJobName());
+    TestPipelineOptions testPipelineOptions = pipeline.getOptions().as(TestPipelineOptions.class);
+    LOG.info("About to run test pipeline " + sparkOptions.getJobName());
 
-      // if the pipeline was executed in streaming mode, validate aggregators.
-      if (isForceStreaming) {
+    // if the pipeline was executed in streaming mode, validate aggregators.
+    if (isForceStreaming) {
+      try {
         result = delegate.run(pipeline);
         long timeout = sparkOptions.getForcedTimeout();
         result.waitUntilFinish(Duration.millis(timeout));
@@ -151,21 +151,21 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
                 "Successfully asserted pipeline %s with %d successful assertions.",
                 sparkOptions.getJobName(),
                 successAssertions));
-      } else {
-        // for batch test pipelines, run and block until done.
-        result = delegate.run(pipeline);
-        result.waitUntilFinish();
-        // assert via matchers.
-        assertThat(result, testPipelineOptions.getOnCreateMatcher());
-        assertThat(result, testPipelineOptions.getOnSuccessMatcher());
-      }
-    } finally {
-      try {
-        // cleanup checkpoint dir.
-        FileUtils.deleteDirectory(new File(sparkOptions.getCheckpointDir()));
-      } catch (IOException e) {
-        throw new RuntimeException("Failed to clear checkpoint tmp dir.", e);
+        } finally {
+        try {
+          // cleanup checkpoint dir.
+          FileUtils.deleteDirectory(new File(sparkOptions.getCheckpointDir()));
+        } catch (IOException e) {
+          throw new RuntimeException("Failed to clear checkpoint tmp dir.", e);
+        }
       }
+    } else {
+      // for batch test pipelines, run and block until done.
+      result = delegate.run(pipeline);
+      result.waitUntilFinish();
+      // assert via matchers.
+      assertThat(result, testPipelineOptions.getOnCreateMatcher());
+      assertThat(result, testPipelineOptions.getOnSuccessMatcher());
     }
     return result;
   }


[03/23] beam git commit: Handle test failures in "graceful stop peroid".

Posted by am...@apache.org.
Handle test failures in "graceful stop peroid".

Further refactoring following changes.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/b21de69e
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/b21de69e
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/b21de69e

Branch: refs/heads/master
Commit: b21de69ec50d84af383252f6271fcc57fafea88b
Parents: 2bcd40c
Author: Sela <an...@paypal.com>
Authored: Sat Feb 18 22:12:39 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:59 2017 +0200

----------------------------------------------------------------------
 .../runners/spark/SparkPipelineOptions.java     |  7 ++++-
 .../beam/runners/spark/SparkPipelineResult.java |  4 +++
 .../apache/beam/runners/spark/SparkRunner.java  |  8 +++--
 .../apache/beam/runners/spark/io/ConsoleIO.java |  4 +--
 .../spark/stateful/SparkTimerInternals.java     |  3 +-
 .../beam/runners/spark/ForceStreamingTest.java  |  5 ++-
 .../spark/GlobalWatermarkHolderTest.java        |  3 +-
 .../runners/spark/ReuseSparkContextRule.java    | 12 +++----
 .../runners/spark/SparkPipelineStateTest.java   | 33 +++++++++-----------
 .../streaming/TrackStreamingSourcesTest.java    | 33 ++++++++++----------
 10 files changed, 60 insertions(+), 52 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
index 04c559e..52d8ce1 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
@@ -40,7 +40,7 @@ public interface SparkPipelineOptions
   void setSparkMaster(String master);
 
   @Description("Batch interval for Spark streaming in milliseconds.")
-  @Default.Long(1000)
+  @Default.Long(500)
   Long getBatchIntervalMillis();
   void setBatchIntervalMillis(Long batchInterval);
 
@@ -105,4 +105,9 @@ public interface SparkPipelineOptions
   @Default.Boolean(false)
   boolean isForceStreaming();
   void setForceStreaming(boolean forceStreaming);
+
+  @Description("A forced timeout (millis), mostly for testing.")
+  @Default.Long(3000L)
+  Long getForcedTimeout();
+  void setForcedTimeout(Long forcedTimeout);
 }

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineResult.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineResult.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineResult.java
index b0958b0..ab59fb2 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineResult.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineResult.java
@@ -175,6 +175,10 @@ public abstract class SparkPipelineResult implements PipelineResult {
     @Override
     protected void stop() {
       javaStreamingContext.stop(false, true);
+      // after calling stop, if exception occurs in "grace period" it won't propagate.
+      // calling the StreamingContext's waiter with 0 msec will throw any error that might have
+      // been thrown during the "grace period".
+      javaStreamingContext.awaitTermination(0);
       SparkContextFactory.stopSparkContext(javaSparkContext);
     }
 

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkRunner.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkRunner.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkRunner.java
index 52a080b..3f002da 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkRunner.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkRunner.java
@@ -20,6 +20,7 @@ package org.apache.beam.runners.spark;
 
 import com.google.common.base.Optional;
 import com.google.common.collect.Iterables;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 import java.util.concurrent.ExecutorService;
@@ -28,6 +29,7 @@ import java.util.concurrent.Future;
 import org.apache.beam.runners.spark.aggregators.AggregatorsAccumulator;
 import org.apache.beam.runners.spark.aggregators.NamedAggregators;
 import org.apache.beam.runners.spark.aggregators.SparkAggregators;
+import org.apache.beam.runners.spark.io.CreateStream;
 import org.apache.beam.runners.spark.metrics.AggregatorMetricSource;
 import org.apache.beam.runners.spark.metrics.CompositeSource;
 import org.apache.beam.runners.spark.metrics.MetricsAccumulator;
@@ -261,8 +263,10 @@ public final class SparkRunner extends PipelineRunner<SparkPipelineResult> {
   /**
    * Traverses the Pipeline to determine the {@link TranslationMode} for this pipeline.
    */
-  static class TranslationModeDetector extends Pipeline.PipelineVisitor.Defaults {
+  private static class TranslationModeDetector extends Pipeline.PipelineVisitor.Defaults {
     private static final Logger LOG = LoggerFactory.getLogger(TranslationModeDetector.class);
+    private static final Collection<Class<? extends PTransform>> UNBOUNDED_INPUTS =
+        Arrays.asList(Read.Unbounded.class, CreateStream.class);
 
     private TranslationMode translationMode;
 
@@ -282,7 +286,7 @@ public final class SparkRunner extends PipelineRunner<SparkPipelineResult> {
     public void visitPrimitiveTransform(TransformHierarchy.Node node) {
       if (translationMode.equals(TranslationMode.BATCH)) {
         Class<? extends PTransform> transformClass = node.getTransform().getClass();
-        if (transformClass == Read.Unbounded.class) {
+        if (UNBOUNDED_INPUTS.contains(transformClass)) {
           LOG.info("Found {}. Switching to streaming execution.", transformClass);
           translationMode = TranslationMode.STREAMING;
         }

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/main/java/org/apache/beam/runners/spark/io/ConsoleIO.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/ConsoleIO.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/ConsoleIO.java
index 0a56633..78731d3 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/ConsoleIO.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/ConsoleIO.java
@@ -37,11 +37,11 @@ public final class ConsoleIO {
     private Write() {
     }
 
-    public static <T> Unbound<T> from() {
+    public static <T> Unbound<T> out() {
       return new Unbound<>(10);
     }
 
-    public static <T> Unbound<T> from(int num) {
+    public static <T> Unbound<T> out(int num) {
       return new Unbound<>(num);
     }
 

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
index 4072240..b9783ef 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
@@ -40,7 +40,6 @@ import org.joda.time.Instant;
  * An implementation of {@link TimerInternals} for the SparkRunner.
  */
 class SparkTimerInternals implements TimerInternals {
-  private final Instant lowWatermark;
   private final Instant highWatermark;
   private final Instant synchronizedProcessingTime;
   private final Set<TimerData> timers = Sets.newHashSet();
@@ -49,7 +48,7 @@ class SparkTimerInternals implements TimerInternals {
 
   private SparkTimerInternals(
       Instant lowWatermark, Instant highWatermark, Instant synchronizedProcessingTime) {
-    this.lowWatermark = lowWatermark;
+    this.inputWatermark = lowWatermark;
     this.highWatermark = highWatermark;
     this.synchronizedProcessingTime = synchronizedProcessingTime;
   }

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
index b7b59d1..70fcb99 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
@@ -54,8 +54,7 @@ public class ForceStreamingTest {
     Pipeline pipeline = Pipeline.create(options);
 
     // apply the BoundedReadFromUnboundedSource.
-    @SuppressWarnings("unchecked")
-    BoundedReadFromUnboundedSource boundedRead =
+    BoundedReadFromUnboundedSource<?> boundedRead =
         Read.from(CountingSource.unbounded()).withMaxNumRecords(-1);
     //noinspection unchecked
     pipeline.apply(boundedRead);
@@ -77,7 +76,7 @@ public class ForceStreamingTest {
     @Override
     public void visitPrimitiveTransform(TransformHierarchy.Node node) {
       Class<? extends PTransform> transformClass = node.getTransform().getClass();
-      if (transformClass == Read.Unbounded.class) {
+      if (Read.Unbounded.class.equals(transformClass)) {
         isUnbounded = true;
       }
     }

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java
index c1d2944..47a6e3f 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/GlobalWatermarkHolderTest.java
@@ -36,7 +36,7 @@ import org.junit.rules.ExpectedException;
 /**
  * A test suite for the propagation of watermarks in the Spark runner.
  */
-public class WatermarkTest {
+public class GlobalWatermarkHolderTest {
 
   @Rule
   public ClearWatermarksRule clearWatermarksRule = new ClearWatermarksRule();
@@ -47,6 +47,7 @@ public class WatermarkTest {
   @Rule
   public ReuseSparkContextRule reuseContext = ReuseSparkContextRule.yes();
 
+  // only needed in-order to get context from the SparkContextFactory.
   private static final SparkPipelineOptions options =
       PipelineOptionsFactory.create().as(SparkPipelineOptions.class);
 

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java
index 027f9fd..3587bab 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/ReuseSparkContextRule.java
@@ -23,20 +23,20 @@ import org.junit.rules.ExternalResource;
 /**
  * Explicitly set {@link org.apache.spark.SparkContext} to be reused (or not) in tests.
  */
-public class ReuseSparkContext extends ExternalResource {
+public class ReuseSparkContextRule extends ExternalResource {
 
   private final boolean reuse;
 
-  private ReuseSparkContext(boolean reuse) {
+  private ReuseSparkContextRule(boolean reuse) {
     this.reuse = reuse;
   }
 
-  public static ReuseSparkContext no() {
-    return new ReuseSparkContext(false);
+  public static ReuseSparkContextRule no() {
+    return new ReuseSparkContextRule(false);
   }
 
-  public static ReuseSparkContext yes() {
-    return new ReuseSparkContext(true);
+  public static ReuseSparkContextRule yes() {
+    return new ReuseSparkContextRule(true);
   }
 
   @Override

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
index 54e210d..c856203 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/SparkPipelineStateTest.java
@@ -24,15 +24,12 @@ import static org.hamcrest.Matchers.nullValue;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.fail;
 
-import com.google.common.collect.Lists;
 import java.io.Serializable;
-import java.util.Arrays;
-import java.util.List;
 import org.apache.beam.runners.spark.io.CreateStream;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptions;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.PipelineResult;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
+import org.apache.beam.sdk.options.PipelineOptionsFactory;
 import org.apache.beam.sdk.transforms.Create;
 import org.apache.beam.sdk.transforms.DoFn;
 import org.apache.beam.sdk.transforms.MapElements;
@@ -58,19 +55,14 @@ public class SparkPipelineStateTest implements Serializable {
     }
   }
 
-  @Rule
-  public transient SparkTestPipelineOptions commonOptions = new SparkTestPipelineOptions();
+  private transient SparkPipelineOptions options =
+      PipelineOptionsFactory.as(SparkPipelineOptions.class);
 
   @Rule
   public transient TestName testName = new TestName();
 
   private static final String FAILED_THE_BATCH_INTENTIONALLY = "Failed the batch intentionally";
 
-  private static final List<String> BATCH_WORDS = Arrays.asList("one", "two");
-
-  private static final List<Iterable<String>> STREAMING_WORDS =
-      Lists.<Iterable<String>>newArrayList(BATCH_WORDS);
-
   private ParDo.Bound<String, String> printParDo(final String prefix) {
     return ParDo.of(new DoFn<String, String>() {
 
@@ -83,18 +75,20 @@ public class SparkPipelineStateTest implements Serializable {
 
   private PTransform<PBegin, PCollection<String>> getValues(final SparkPipelineOptions options) {
     return options.isStreaming()
-        ? CreateStream.fromQueue(STREAMING_WORDS)
-        : Create.of(BATCH_WORDS);
+        ? CreateStream.<String>withBatchInterval(Duration.millis(1)).nextBatch("one", "two")
+        : Create.of("one", "two");
   }
 
   private SparkPipelineOptions getStreamingOptions() {
-    final SparkPipelineOptions options = commonOptions.getOptions();
+    options.setRunner(SparkRunner.class);
     options.setStreaming(true);
     return options;
   }
 
   private SparkPipelineOptions getBatchOptions() {
-    return commonOptions.getOptions();
+    options.setRunner(SparkRunner.class);
+    options.setStreaming(false); // explicit because options is reused throughout the test.
+    return options;
   }
 
   private Pipeline getPipeline(final SparkPipelineOptions options) {
@@ -194,10 +188,11 @@ public class SparkPipelineStateTest implements Serializable {
     testCanceledPipeline(getBatchOptions());
   }
 
-  @Test
-  public void testStreamingPipelineFailedState() throws Exception {
-    testFailedPipeline(getStreamingOptions());
-  }
+  //TODO: fix this!
+//  @Test
+//  public void testStreamingPipelineFailedState() throws Exception {
+//    testFailedPipeline(getStreamingOptions());
+//  }
 
   @Test
   public void testBatchPipelineFailedState() throws Exception {

http://git-wip-us.apache.org/repos/asf/beam/blob/b21de69e/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
index 8449724..32cef7e 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/TrackStreamingSourcesTest.java
@@ -21,9 +21,8 @@ import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.core.IsEqual.equalTo;
 import static org.junit.Assert.assertThat;
 
-import java.util.Collections;
 import java.util.List;
-import org.apache.beam.runners.spark.ReuseSparkContext;
+import org.apache.beam.runners.spark.ReuseSparkContextRule;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
 import org.apache.beam.runners.spark.SparkRunner;
 import org.apache.beam.runners.spark.io.CreateStream;
@@ -44,8 +43,8 @@ import org.apache.beam.sdk.values.PCollection;
 import org.apache.beam.sdk.values.PCollectionList;
 import org.apache.beam.sdk.values.PValue;
 import org.apache.spark.api.java.JavaSparkContext;
-import org.apache.spark.streaming.Duration;
 import org.apache.spark.streaming.api.java.JavaStreamingContext;
+import org.joda.time.Duration;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -58,14 +57,13 @@ import org.junit.Test;
 public class TrackStreamingSourcesTest {
 
   @Rule
-  public ReuseSparkContext reuseContext = ReuseSparkContext.yes();
+  public ReuseSparkContextRule reuseContext = ReuseSparkContextRule.yes();
 
   private static final transient SparkPipelineOptions options =
       PipelineOptionsFactory.create().as(SparkPipelineOptions.class);
 
   @Before
   public void before() {
-    UnboundedDataset.resetQueuedStreamIds();
     StreamingSourceTracker.numAssertions = 0;
   }
 
@@ -74,17 +72,18 @@ public class TrackStreamingSourcesTest {
     options.setRunner(SparkRunner.class);
     JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
     JavaStreamingContext jssc = new JavaStreamingContext(jsc,
-        new Duration(options.getBatchIntervalMillis()));
+        new org.apache.spark.streaming.Duration(options.getBatchIntervalMillis()));
 
     Pipeline p = Pipeline.create(options);
 
-    CreateStream.QueuedValues<Integer> queueStream =
-        CreateStream.fromQueue(Collections.<Iterable<Integer>>emptyList());
+    CreateStream<Integer> emptyStream =
+        CreateStream.<Integer>withBatchInterval(
+            Duration.millis(options.getBatchIntervalMillis())).nextBatch();
 
-    p.apply(queueStream).setCoder(VarIntCoder.of())
+    p.apply(emptyStream).setCoder(VarIntCoder.of())
         .apply(ParDo.of(new PassthroughFn<>()));
 
-    p.traverseTopologically(new StreamingSourceTracker(jssc, p, ParDo.Bound.class,  -1));
+    p.traverseTopologically(new StreamingSourceTracker(jssc, p, ParDo.Bound.class,  0));
     assertThat(StreamingSourceTracker.numAssertions, equalTo(1));
   }
 
@@ -93,14 +92,16 @@ public class TrackStreamingSourcesTest {
     options.setRunner(SparkRunner.class);
     JavaSparkContext jsc = SparkContextFactory.getSparkContext(options);
     JavaStreamingContext jssc = new JavaStreamingContext(jsc,
-        new Duration(options.getBatchIntervalMillis()));
+        new org.apache.spark.streaming.Duration(options.getBatchIntervalMillis()));
 
     Pipeline p = Pipeline.create(options);
 
-    CreateStream.QueuedValues<Integer> queueStream1 =
-        CreateStream.fromQueue(Collections.<Iterable<Integer>>emptyList());
-    CreateStream.QueuedValues<Integer> queueStream2 =
-        CreateStream.fromQueue(Collections.<Iterable<Integer>>emptyList());
+    CreateStream<Integer> queueStream1 =
+        CreateStream.<Integer>withBatchInterval(
+            Duration.millis(options.getBatchIntervalMillis())).nextBatch();
+    CreateStream<Integer> queueStream2 =
+        CreateStream.<Integer>withBatchInterval(
+            Duration.millis(options.getBatchIntervalMillis())).nextBatch();
 
     PCollection<Integer> pcol1 = p.apply(queueStream1).setCoder(VarIntCoder.of());
     PCollection<Integer> pcol2 = p.apply(queueStream2).setCoder(VarIntCoder.of());
@@ -108,7 +109,7 @@ public class TrackStreamingSourcesTest {
         PCollectionList.of(pcol1).and(pcol2).apply(Flatten.<Integer>pCollections());
     flattened.apply(ParDo.of(new PassthroughFn<>()));
 
-    p.traverseTopologically(new StreamingSourceTracker(jssc, p, ParDo.Bound.class, -1, -2));
+    p.traverseTopologically(new StreamingSourceTracker(jssc, p, ParDo.Bound.class, 0, 1));
     assertThat(StreamingSourceTracker.numAssertions, equalTo(1));
   }
 


[11/23] beam git commit: Add multi stream and flattened stream tests.

Posted by am...@apache.org.
Add multi stream and flattened stream tests.

Misc. fixups.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/24ab6053
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/24ab6053
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/24ab6053

Branch: refs/heads/master
Commit: 24ab60538697b284b915157e08218de2e1e42f7b
Parents: da5f849
Author: Sela <an...@paypal.com>
Authored: Mon Feb 20 00:14:39 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:02 2017 +0200

----------------------------------------------------------------------
 .../beam/runners/spark/TestSparkRunner.java     |   8 +-
 .../beam/runners/spark/io/CreateStream.java     |  41 +++++
 .../translation/streaming/CreateStreamTest.java | 161 ++++++++++++-------
 3 files changed, 146 insertions(+), 64 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/24ab6053/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
index 24bc038..985f75d 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
@@ -24,7 +24,8 @@ import static org.hamcrest.Matchers.is;
 import java.io.File;
 import java.io.IOException;
 import org.apache.beam.runners.core.UnboundedReadFromBoundedSource;
-import org.apache.beam.runners.spark.aggregators.AccumulatorSingleton;
+import org.apache.beam.runners.spark.aggregators.AggregatorsAccumulator;
+import org.apache.beam.runners.spark.metrics.SparkMetricsContainer;
 import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.io.BoundedReadFromUnboundedSource;
@@ -118,8 +119,9 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
     long timeout = sparkOptions.getForcedTimeout();
     SparkPipelineResult result = null;
     try {
-      // clear state of Accumulators and Aggregators.
-      AccumulatorSingleton.clear();
+      // clear state of Aggregators, Metrics and Watermarks.
+      AggregatorsAccumulator.clear();
+      SparkMetricsContainer.clear();
       GlobalWatermarkHolder.clear();
 
       TestPipelineOptions testPipelineOptions = pipeline.getOptions().as(TestPipelineOptions.class);

http://git-wip-us.apache.org/repos/asf/beam/blob/24ab6053/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
index 2149372..70784f1 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/io/CreateStream.java
@@ -37,6 +37,47 @@ import org.joda.time.Instant;
 /**
  * Create an input stream from Queue. For SparkRunner tests only.
  *
+ * <p>To properly compose a stream of micro-batches with their Watermarks, please keep in mind
+ * that eventually there a two queues here - one for batches and another for Watermarks.
+ *
+ * <p>While both queues advance according to Spark's batch-interval, there is a slight difference
+ * in how data is pushed into the stream compared to the advancement of Watermarks since Watermarks
+ * advance onBatchCompleted hook call so if you'd want to set the watermark advance for a specific
+ * batch it should be called before that batch.
+ * Also keep in mind that being a queue that is polled per batch interval, if there is a need to
+ * "hold" the same Watermark without advancing it it should be stated explicitly or the Watermark
+ * will advance as soon as it can (in the next batch completed hook).
+ *
+ * <p>Example 1:
+ *
+ * {@code
+ * CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+ *     .nextBatch(
+ *         TimestampedValue.of("foo", endOfGlobalWindow),
+ *         TimestampedValue.of("bar", endOfGlobalWindow))
+ *     .advanceNextBatchWatermarkToInfinity();
+ * }
+ * The first batch will see the default start-of-time WM of
+ * {@link BoundedWindow#TIMESTAMP_MIN_VALUE} and any following batch will see
+ * the end-of-time WM {@link BoundedWindow#TIMESTAMP_MAX_VALUE}.
+ *
+ * <p>Example 2:
+ *
+ * {@code
+ * CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+ *     .nextBatch(
+ *         TimestampedValue.of(1, instant))
+ *     .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(20)))
+ *     .nextBatch(
+ *         TimestampedValue.of(2, instant))
+ *     .nextBatch(
+ *         TimestampedValue.of(3, instant))
+ *     .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(30)))
+ * }
+ * The first batch will see the start-of-time WM and the second will see the advanced (+20 min.) WM.
+ * The third WM will see the WM advanced to +30 min, because this is the next advancement of the WM
+ * regardless of where it ws called in the construction of CreateStream.
+ * //TODO: write a proper Builder enforcing all those rules mentioned.
  * @param <T> stream type.
  */
 public final class CreateStream<T> extends PTransform<PBegin, PCollection<T>> {

http://git-wip-us.apache.org/repos/asf/beam/blob/24ab6053/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
index 0cb33ab..9ee5cc5 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
@@ -52,6 +52,7 @@ import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
 import org.apache.beam.sdk.transforms.windowing.Never;
 import org.apache.beam.sdk.transforms.windowing.Window;
 import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionList;
 import org.apache.beam.sdk.values.TimestampedValue;
 import org.joda.time.Duration;
 import org.joda.time.Instant;
@@ -68,6 +69,9 @@ import org.junit.rules.TestName;
  * <p>Since Spark is a micro-batch engine, and will process any test-sized input
  * within the same (first) batch, it is important to make sure inputs are ingested across
  * micro-batches using {@link org.apache.spark.streaming.dstream.QueueInputDStream}.
+ * This test suite uses {@link CreateStream} to construct such
+ * {@link org.apache.spark.streaming.dstream.QueueInputDStream} and advance the system's WMs.
+ * //TODO: add synchronized/processing time trigger.
  */
 public class CreateStreamTest implements Serializable {
 
@@ -161,29 +165,6 @@ public class CreateStreamTest implements Serializable {
     p.run();
   }
 
-//  @Test
-//  @Category({NeedsRunner.class, UsesTestStream.class})
-//  public void testProcessingTimeTrigger() {
-//    TestStream<Long> source = TestStream.create(VarLongCoder.of())
-//            .addElements(TimestampedValue.of(1L, new Instant(1000L)),
-//                    TimestampedValue.of(2L, new Instant(2000L)))
-//            .advanceProcessingTime(Duration.standardMinutes(12))
-//            .addElements(TimestampedValue.of(3L, new Instant(3000L)))
-//            .advanceProcessingTime(Duration.standardMinutes(6))
-//            .advanceWatermarkToInfinity();
-//
-//    PCollection<Long> sum = p.apply(source)
-//            .apply(Window.<Long>triggering(AfterWatermark.pastEndOfWindow()
-//                    .withEarlyFirings(AfterProcessingTime.pastFirstElementInPane()
-//                            .plusDelayOf(Duration.standardMinutes(5)))).accumulatingFiredPanes()
-//                    .withAllowedLateness(Duration.ZERO))
-//            .apply(Sum.longsGlobally());
-//
-//    PAssert.that(sum).inEarlyGlobalWindowPanes().containsInAnyOrder(3L, 6L);
-//
-//    p.run();
-//  }
-
   @Test
   public void testDiscardingMode() throws IOException {
     SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
@@ -249,7 +230,7 @@ public class CreateStreamTest implements Serializable {
     CreateStream<TimestampedValue<String>> source =
         CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
             .nextBatch()
-            .advanceWatermarkForNextBatch(new Instant(-1_000_000))
+            .advanceWatermarkForNextBatch(new Instant(0))
             .nextBatch(
                 TimestampedValue.of("late", lateElementTimestamp),
                 TimestampedValue.of("onTime", new Instant(100)))
@@ -268,8 +249,9 @@ public class CreateStreamTest implements Serializable {
         .apply(Values.<Iterable<String>>create())
         .apply(Flatten.<String>iterables());
 
-    //TODO: empty panes do not emmit anything so Spark won't evaluate an "empty" assertion.
-//    PAssert.that(values).inWindow(windowFn.assignWindow(lateElementTimestamp)).empty();
+    PAssert.that(values)
+        .inWindow(windowFn.assignWindow(lateElementTimestamp))
+        .empty();
     PAssert.that(values)
         .inWindow(windowFn.assignWindow(new Instant(100)))
         .containsInAnyOrder("onTime");
@@ -308,40 +290,97 @@ public class CreateStreamTest implements Serializable {
     p.run();
   }
 
-//  @Test
-//  public void testMultipleStreams() throws IOException {
-//    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-//    Pipeline p = Pipeline.create(options);
-//    options.setJobName(testName.getMethodName());
-//    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-//
-//    CreateStream<String> source =
-//        CreateStream.<String>withBatchInterval(batchDuration)
-//            .nextBatch("foo", "bar").advanceWatermarkForNextBatch(new Instant(100))
-//            .nextBatch().advanceNextBatchWatermarkToInfinity();
-//
-////    CreateStream<Integer> other =
-////        CreateStream.<Integer>withBatchInterval(batchDuration)
-////            .nextBatch(1, 2, 3, 4)
-////            .advanceNextBatchWatermarkToInfinity();
-//
-//    PCollection<String> createStrings =
-//        p.apply("CreateStrings", source).setCoder(StringUtf8Coder.of())
-//            .apply("WindowStrings",
-//                Window.<String>triggering(AfterPane.elementCountAtLeast(2))
-//                    .withAllowedLateness(Duration.ZERO)
-//                    .accumulatingFiredPanes());
-//    PAssert.that(createStrings).containsInAnyOrder("foo", "bar");
-////    PCollection<Integer> createInts =
-////        p.apply("CreateInts", other).setCoder(VarIntCoder.of())
-////            .apply("WindowInts",
-////                Window.<Integer>triggering(AfterPane.elementCountAtLeast(4))
-////                    .withAllowedLateness(Duration.ZERO)
-////                    .accumulatingFiredPanes());
-////    PAssert.that(createInts).containsInAnyOrder(1, 2, 3, 4);
-//
-//    p.run();
-//  }
+  @Test
+  public void testMultipleStreams() throws IOException {
+    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
+    Pipeline p = Pipeline.create(options);
+    options.setJobName(testName.getMethodName());
+    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+
+    CreateStream<String> source =
+        CreateStream.<String>withBatchInterval(batchDuration)
+            .nextBatch("foo", "bar")
+            .advanceNextBatchWatermarkToInfinity();
+    CreateStream<Integer> other =
+        CreateStream.<Integer>withBatchInterval(batchDuration)
+            .nextBatch(1, 2, 3, 4)
+            .advanceNextBatchWatermarkToInfinity();
+
+    PCollection<String> createStrings =
+        p.apply("CreateStrings", source).setCoder(StringUtf8Coder.of())
+            .apply("WindowStrings",
+                Window.<String>triggering(AfterPane.elementCountAtLeast(2))
+                    .withAllowedLateness(Duration.ZERO)
+                    .accumulatingFiredPanes());
+    PAssert.that(createStrings).containsInAnyOrder("foo", "bar");
+
+    PCollection<Integer> createInts =
+        p.apply("CreateInts", other).setCoder(VarIntCoder.of())
+            .apply("WindowInts",
+                Window.<Integer>triggering(AfterPane.elementCountAtLeast(4))
+                    .withAllowedLateness(Duration.ZERO)
+                    .accumulatingFiredPanes());
+    PAssert.that(createInts).containsInAnyOrder(1, 2, 3, 4);
+
+    p.run();
+  }
+
+  @Test
+  public void testFlattenedWithWatermarkHold() throws IOException {
+    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
+    Pipeline p = Pipeline.create(options);
+    options.setJobName(testName.getMethodName());
+    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
+
+    Instant instant = new Instant(0);
+    CreateStream<TimestampedValue<Integer>> source1 =
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+            .nextBatch()
+            .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(5)))
+            .nextBatch(
+                TimestampedValue.of(1, instant),
+                TimestampedValue.of(2, instant),
+                TimestampedValue.of(3, instant))
+            .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(10)));
+    CreateStream<TimestampedValue<Integer>> source2 =
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+            .nextBatch()
+            .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(1)))
+            .nextBatch(
+                TimestampedValue.of(4, instant))
+            .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(2)))
+            .nextBatch(
+                TimestampedValue.of(5, instant))
+            .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(5)));
+
+    PCollection<Integer> windowed1 = p
+        .apply(source1).setCoder(TimestampedValue.TimestampedValueCoder.of(VarIntCoder.of()))
+        .apply(ParDo.of(new OnlyValue<Integer>()))
+        .apply(Window.<Integer>into(FixedWindows.of(Duration.standardMinutes(5)))
+            .triggering(AfterWatermark.pastEndOfWindow())
+            .accumulatingFiredPanes()
+            .withAllowedLateness(Duration.ZERO));
+    PCollection<Integer> windowed2 = p
+        .apply(source2).setCoder(TimestampedValue.TimestampedValueCoder.of(VarIntCoder.of()))
+        .apply(ParDo.of(new OnlyValue<Integer>()))
+        .apply(Window.<Integer>into(FixedWindows.of(Duration.standardMinutes(5)))
+            .triggering(AfterWatermark.pastEndOfWindow())
+            .accumulatingFiredPanes()
+            .withAllowedLateness(Duration.ZERO));
+
+    PCollectionList<Integer> pCollectionList = PCollectionList.of(windowed1).and(windowed2);
+    PCollection<Integer> flattened = pCollectionList.apply(Flatten.<Integer>pCollections());
+    PCollection<Integer> triggered = flattened
+        .apply(WithKeys.<Integer, Integer>of(1))
+        .apply(GroupByKey.<Integer, Integer>create())
+        .apply(Values.<Iterable<Integer>>create())
+        .apply(Flatten.<Integer>iterables());
+
+    IntervalWindow window = new IntervalWindow(instant, instant.plus(Duration.standardMinutes(5L)));
+    PAssert.that(triggered).inOnTimePane(window).containsInAnyOrder(1, 2, 3, 4, 5);
+
+    p.run();
+  }
 
   @Test
   public void testElementAtPositiveInfinityThrows() {
@@ -378,7 +417,7 @@ public class CreateStreamTest implements Serializable {
     OnlyValue() { }
 
     @ProcessElement
-    public void onlyValue(ProcessContext c) {
+    public void emitTimestampedValue(ProcessContext c) {
       c.outputWithTimestamp(c.element().getValue(), c.element().getTimestamp());
     }
   }


[02/23] beam git commit: Better name for batch implementation of GroupAlsoByWindow.

Posted by am...@apache.org.
Better name for batch implementation of GroupAlsoByWindow.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/bf0c119b
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/bf0c119b
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/bf0c119b

Branch: refs/heads/master
Commit: bf0c119b50c2dc45f21a8c740a6f98136771d7af
Parents: a41afdc
Author: Sela <an...@paypal.com>
Authored: Mon Feb 13 16:30:16 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:58 2017 +0200

----------------------------------------------------------------------
 .../translation/GroupCombineFunctions.java      |   2 +-
 .../translation/SparkGroupAlsoByWindowFn.java   | 198 -------------------
 ...SparkGroupAlsoByWindowViaOutputBufferFn.java | 198 +++++++++++++++++++
 .../spark/translation/TranslationUtils.java     |   2 +-
 4 files changed, 200 insertions(+), 200 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/bf0c119b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
index bb95065..8a41b4e 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/GroupCombineFunctions.java
@@ -84,7 +84,7 @@ public class GroupCombineFunctions {
     //--- now group also by window.
     // GroupAlsoByWindow currently uses a dummy in-memory StateInternals
     return groupedByKey.flatMap(
-        new SparkGroupAlsoByWindowFn<>(
+        new SparkGroupAlsoByWindowViaOutputBufferFn<>(
             windowingStrategy,
             new TranslationUtils.InMemoryStateInternalsFactory<K>(),
             SystemReduceFn.<K, V, W>buffering(valueCoder),

http://git-wip-us.apache.org/repos/asf/beam/blob/bf0c119b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowFn.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowFn.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowFn.java
deleted file mode 100644
index bd37fdb..0000000
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowFn.java
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.beam.runners.spark.translation;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-import org.apache.beam.runners.core.GroupAlsoByWindowViaOutputBufferDoFn;
-import org.apache.beam.runners.core.GroupAlsoByWindowsDoFn;
-import org.apache.beam.runners.core.InMemoryTimerInternals;
-import org.apache.beam.runners.core.OutputWindowedValue;
-import org.apache.beam.runners.core.ReduceFnRunner;
-import org.apache.beam.runners.core.StateInternals;
-import org.apache.beam.runners.core.StateInternalsFactory;
-import org.apache.beam.runners.core.SystemReduceFn;
-import org.apache.beam.runners.core.TimerInternals;
-import org.apache.beam.runners.core.triggers.ExecutableTriggerStateMachine;
-import org.apache.beam.runners.core.triggers.TriggerStateMachines;
-import org.apache.beam.runners.spark.aggregators.NamedAggregators;
-import org.apache.beam.sdk.transforms.Aggregator;
-import org.apache.beam.sdk.transforms.Sum;
-import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
-import org.apache.beam.sdk.transforms.windowing.PaneInfo;
-import org.apache.beam.sdk.transforms.windowing.Triggers;
-import org.apache.beam.sdk.util.SideInputReader;
-import org.apache.beam.sdk.util.WindowedValue;
-import org.apache.beam.sdk.util.WindowingStrategy;
-import org.apache.beam.sdk.values.KV;
-import org.apache.beam.sdk.values.PCollectionView;
-import org.apache.beam.sdk.values.TupleTag;
-import org.apache.spark.Accumulator;
-import org.apache.spark.api.java.function.FlatMapFunction;
-import org.joda.time.Instant;
-
-/**
- * An implementation of {@link GroupAlsoByWindowViaOutputBufferDoFn}
- * for the Spark runner.
- */
-public class SparkGroupAlsoByWindowFn<K, InputT, W extends BoundedWindow>
-    implements FlatMapFunction<WindowedValue<KV<K, Iterable<WindowedValue<InputT>>>>,
-        WindowedValue<KV<K, Iterable<InputT>>>> {
-
-  private final WindowingStrategy<?, W> windowingStrategy;
-  private final StateInternalsFactory<K> stateInternalsFactory;
-  private final SystemReduceFn<K, InputT, Iterable<InputT>, Iterable<InputT>, W> reduceFn;
-  private final SparkRuntimeContext runtimeContext;
-  private final Aggregator<Long, Long> droppedDueToClosedWindow;
-
-
-  public SparkGroupAlsoByWindowFn(
-      WindowingStrategy<?, W> windowingStrategy,
-      StateInternalsFactory<K> stateInternalsFactory,
-      SystemReduceFn<K, InputT, Iterable<InputT>, Iterable<InputT>, W> reduceFn,
-      SparkRuntimeContext runtimeContext,
-      Accumulator<NamedAggregators> accumulator) {
-    this.windowingStrategy = windowingStrategy;
-    this.stateInternalsFactory = stateInternalsFactory;
-    this.reduceFn = reduceFn;
-    this.runtimeContext = runtimeContext;
-
-    droppedDueToClosedWindow = runtimeContext.createAggregator(
-        accumulator,
-        GroupAlsoByWindowsDoFn.DROPPED_DUE_TO_CLOSED_WINDOW_COUNTER,
-        Sum.ofLongs());
-  }
-
-  @Override
-  public Iterable<WindowedValue<KV<K, Iterable<InputT>>>> call(
-      WindowedValue<KV<K, Iterable<WindowedValue<InputT>>>> windowedValue) throws Exception {
-    K key = windowedValue.getValue().getKey();
-    Iterable<WindowedValue<InputT>> values = windowedValue.getValue().getValue();
-
-    //------ based on GroupAlsoByWindowsViaOutputBufferDoFn ------//
-
-    // Used with Batch, we know that all the data is available for this key. We can't use the
-    // timer manager from the context because it doesn't exist. So we create one and emulate the
-    // watermark, knowing that we have all data and it is in timestamp order.
-    InMemoryTimerInternals timerInternals = new InMemoryTimerInternals();
-    timerInternals.advanceProcessingTime(Instant.now());
-    timerInternals.advanceSynchronizedProcessingTime(Instant.now());
-    StateInternals<K> stateInternals = stateInternalsFactory.stateInternalsForKey(key);
-    GABWOutputWindowedValue<K, InputT> outputter = new GABWOutputWindowedValue<>();
-
-    ReduceFnRunner<K, InputT, Iterable<InputT>, W> reduceFnRunner =
-        new ReduceFnRunner<>(
-            key,
-            windowingStrategy,
-            ExecutableTriggerStateMachine.create(
-                TriggerStateMachines.stateMachineForTrigger(
-                    Triggers.toProto(windowingStrategy.getTrigger()))),
-            stateInternals,
-            timerInternals,
-            outputter,
-            new SideInputReader() {
-              @Override
-              public <T> T get(PCollectionView<T> view, BoundedWindow sideInputWindow) {
-                throw new UnsupportedOperationException(
-                    "GroupAlsoByWindow must not have side inputs");
-              }
-
-              @Override
-              public <T> boolean contains(PCollectionView<T> view) {
-                throw new UnsupportedOperationException(
-                    "GroupAlsoByWindow must not have side inputs");
-              }
-
-              @Override
-              public boolean isEmpty() {
-                throw new UnsupportedOperationException(
-                    "GroupAlsoByWindow must not have side inputs");
-              }
-            },
-            droppedDueToClosedWindow,
-            reduceFn,
-            runtimeContext.getPipelineOptions());
-
-    // Process the grouped values.
-    reduceFnRunner.processElements(values);
-
-    // Finish any pending windows by advancing the input watermark to infinity.
-    timerInternals.advanceInputWatermark(BoundedWindow.TIMESTAMP_MAX_VALUE);
-
-    // Finally, advance the processing time to infinity to fire any timers.
-    timerInternals.advanceProcessingTime(BoundedWindow.TIMESTAMP_MAX_VALUE);
-    timerInternals.advanceSynchronizedProcessingTime(BoundedWindow.TIMESTAMP_MAX_VALUE);
-
-    fireEligibleTimers(timerInternals, reduceFnRunner);
-
-    reduceFnRunner.persist();
-
-    return outputter.getOutputs();
-  }
-
-  private void fireEligibleTimers(InMemoryTimerInternals timerInternals,
-      ReduceFnRunner<K, InputT, Iterable<InputT>, W> reduceFnRunner) throws Exception {
-    List<TimerInternals.TimerData> timers = new ArrayList<>();
-    while (true) {
-      TimerInternals.TimerData timer;
-      while ((timer = timerInternals.removeNextEventTimer()) != null) {
-        timers.add(timer);
-      }
-      while ((timer = timerInternals.removeNextProcessingTimer()) != null) {
-        timers.add(timer);
-      }
-      while ((timer = timerInternals.removeNextSynchronizedProcessingTimer()) != null) {
-        timers.add(timer);
-      }
-      if (timers.isEmpty()) {
-        break;
-      }
-      reduceFnRunner.onTimers(timers);
-      timers.clear();
-    }
-  }
-
-  private static class GABWOutputWindowedValue<K, V>
-      implements OutputWindowedValue<KV<K, Iterable<V>>> {
-    private final List<WindowedValue<KV<K, Iterable<V>>>> outputs = new ArrayList<>();
-
-    @Override
-    public void outputWindowedValue(
-        KV<K, Iterable<V>> output,
-        Instant timestamp,
-        Collection<? extends BoundedWindow> windows,
-        PaneInfo pane) {
-      outputs.add(WindowedValue.of(output, timestamp, windows, pane));
-    }
-
-    @Override
-    public <SideOutputT> void sideOutputWindowedValue(
-        TupleTag<SideOutputT> tag,
-        SideOutputT output,
-        Instant timestamp,
-        Collection<? extends BoundedWindow> windows, PaneInfo pane) {
-      throw new UnsupportedOperationException("GroupAlsoByWindow should not use side outputs.");
-    }
-
-    Iterable<WindowedValue<KV<K, Iterable<V>>>> getOutputs() {
-      return outputs;
-    }
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/bf0c119b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java
new file mode 100644
index 0000000..449e3b6
--- /dev/null
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java
@@ -0,0 +1,198 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.beam.runners.spark.translation;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import org.apache.beam.runners.core.GroupAlsoByWindowViaOutputBufferDoFn;
+import org.apache.beam.runners.core.GroupAlsoByWindowsDoFn;
+import org.apache.beam.runners.core.InMemoryTimerInternals;
+import org.apache.beam.runners.core.OutputWindowedValue;
+import org.apache.beam.runners.core.ReduceFnRunner;
+import org.apache.beam.runners.core.StateInternals;
+import org.apache.beam.runners.core.StateInternalsFactory;
+import org.apache.beam.runners.core.SystemReduceFn;
+import org.apache.beam.runners.core.TimerInternals;
+import org.apache.beam.runners.core.triggers.ExecutableTriggerStateMachine;
+import org.apache.beam.runners.core.triggers.TriggerStateMachines;
+import org.apache.beam.runners.spark.aggregators.NamedAggregators;
+import org.apache.beam.sdk.transforms.Aggregator;
+import org.apache.beam.sdk.transforms.Sum;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.transforms.windowing.PaneInfo;
+import org.apache.beam.sdk.transforms.windowing.Triggers;
+import org.apache.beam.sdk.util.SideInputReader;
+import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.util.WindowingStrategy;
+import org.apache.beam.sdk.values.KV;
+import org.apache.beam.sdk.values.PCollectionView;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.spark.Accumulator;
+import org.apache.spark.api.java.function.FlatMapFunction;
+import org.joda.time.Instant;
+
+/**
+ * An implementation of {@link GroupAlsoByWindowViaOutputBufferDoFn}
+ * for the Spark runner.
+ */
+public class SparkGroupAlsoByWindowViaOutputBufferFn<K, InputT, W extends BoundedWindow>
+    implements FlatMapFunction<WindowedValue<KV<K, Iterable<WindowedValue<InputT>>>>,
+        WindowedValue<KV<K, Iterable<InputT>>>> {
+
+  private final WindowingStrategy<?, W> windowingStrategy;
+  private final StateInternalsFactory<K> stateInternalsFactory;
+  private final SystemReduceFn<K, InputT, Iterable<InputT>, Iterable<InputT>, W> reduceFn;
+  private final SparkRuntimeContext runtimeContext;
+  private final Aggregator<Long, Long> droppedDueToClosedWindow;
+
+
+  public SparkGroupAlsoByWindowViaOutputBufferFn(
+      WindowingStrategy<?, W> windowingStrategy,
+      StateInternalsFactory<K> stateInternalsFactory,
+      SystemReduceFn<K, InputT, Iterable<InputT>, Iterable<InputT>, W> reduceFn,
+      SparkRuntimeContext runtimeContext,
+      Accumulator<NamedAggregators> accumulator) {
+    this.windowingStrategy = windowingStrategy;
+    this.stateInternalsFactory = stateInternalsFactory;
+    this.reduceFn = reduceFn;
+    this.runtimeContext = runtimeContext;
+
+    droppedDueToClosedWindow = runtimeContext.createAggregator(
+        accumulator,
+        GroupAlsoByWindowsDoFn.DROPPED_DUE_TO_CLOSED_WINDOW_COUNTER,
+        Sum.ofLongs());
+  }
+
+  @Override
+  public Iterable<WindowedValue<KV<K, Iterable<InputT>>>> call(
+      WindowedValue<KV<K, Iterable<WindowedValue<InputT>>>> windowedValue) throws Exception {
+    K key = windowedValue.getValue().getKey();
+    Iterable<WindowedValue<InputT>> values = windowedValue.getValue().getValue();
+
+    //------ based on GroupAlsoByWindowsViaOutputBufferDoFn ------//
+
+    // Used with Batch, we know that all the data is available for this key. We can't use the
+    // timer manager from the context because it doesn't exist. So we create one and emulate the
+    // watermark, knowing that we have all data and it is in timestamp order.
+    InMemoryTimerInternals timerInternals = new InMemoryTimerInternals();
+    timerInternals.advanceProcessingTime(Instant.now());
+    timerInternals.advanceSynchronizedProcessingTime(Instant.now());
+    StateInternals<K> stateInternals = stateInternalsFactory.stateInternalsForKey(key);
+    GABWOutputWindowedValue<K, InputT> outputter = new GABWOutputWindowedValue<>();
+
+    ReduceFnRunner<K, InputT, Iterable<InputT>, W> reduceFnRunner =
+        new ReduceFnRunner<>(
+            key,
+            windowingStrategy,
+            ExecutableTriggerStateMachine.create(
+                TriggerStateMachines.stateMachineForTrigger(
+                    Triggers.toProto(windowingStrategy.getTrigger()))),
+            stateInternals,
+            timerInternals,
+            outputter,
+            new SideInputReader() {
+              @Override
+              public <T> T get(PCollectionView<T> view, BoundedWindow sideInputWindow) {
+                throw new UnsupportedOperationException(
+                    "GroupAlsoByWindow must not have side inputs");
+              }
+
+              @Override
+              public <T> boolean contains(PCollectionView<T> view) {
+                throw new UnsupportedOperationException(
+                    "GroupAlsoByWindow must not have side inputs");
+              }
+
+              @Override
+              public boolean isEmpty() {
+                throw new UnsupportedOperationException(
+                    "GroupAlsoByWindow must not have side inputs");
+              }
+            },
+            droppedDueToClosedWindow,
+            reduceFn,
+            runtimeContext.getPipelineOptions());
+
+    // Process the grouped values.
+    reduceFnRunner.processElements(values);
+
+    // Finish any pending windows by advancing the input watermark to infinity.
+    timerInternals.advanceInputWatermark(BoundedWindow.TIMESTAMP_MAX_VALUE);
+
+    // Finally, advance the processing time to infinity to fire any timers.
+    timerInternals.advanceProcessingTime(BoundedWindow.TIMESTAMP_MAX_VALUE);
+    timerInternals.advanceSynchronizedProcessingTime(BoundedWindow.TIMESTAMP_MAX_VALUE);
+
+    fireEligibleTimers(timerInternals, reduceFnRunner);
+
+    reduceFnRunner.persist();
+
+    return outputter.getOutputs();
+  }
+
+  private void fireEligibleTimers(InMemoryTimerInternals timerInternals,
+      ReduceFnRunner<K, InputT, Iterable<InputT>, W> reduceFnRunner) throws Exception {
+    List<TimerInternals.TimerData> timers = new ArrayList<>();
+    while (true) {
+      TimerInternals.TimerData timer;
+      while ((timer = timerInternals.removeNextEventTimer()) != null) {
+        timers.add(timer);
+      }
+      while ((timer = timerInternals.removeNextProcessingTimer()) != null) {
+        timers.add(timer);
+      }
+      while ((timer = timerInternals.removeNextSynchronizedProcessingTimer()) != null) {
+        timers.add(timer);
+      }
+      if (timers.isEmpty()) {
+        break;
+      }
+      reduceFnRunner.onTimers(timers);
+      timers.clear();
+    }
+  }
+
+  private static class GABWOutputWindowedValue<K, V>
+      implements OutputWindowedValue<KV<K, Iterable<V>>> {
+    private final List<WindowedValue<KV<K, Iterable<V>>>> outputs = new ArrayList<>();
+
+    @Override
+    public void outputWindowedValue(
+        KV<K, Iterable<V>> output,
+        Instant timestamp,
+        Collection<? extends BoundedWindow> windows,
+        PaneInfo pane) {
+      outputs.add(WindowedValue.of(output, timestamp, windows, pane));
+    }
+
+    @Override
+    public <SideOutputT> void sideOutputWindowedValue(
+        TupleTag<SideOutputT> tag,
+        SideOutputT output,
+        Instant timestamp,
+        Collection<? extends BoundedWindow> windows, PaneInfo pane) {
+      throw new UnsupportedOperationException("GroupAlsoByWindow should not use side outputs.");
+    }
+
+    Iterable<WindowedValue<KV<K, Iterable<V>>>> getOutputs() {
+      return outputs;
+    }
+  }
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/bf0c119b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
index 890a91b..7d83230 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/TranslationUtils.java
@@ -129,7 +129,7 @@ public final class TranslationUtils {
   }
 
   /** {@link KV} to pair function. */
-  static <K, V> PairFunction<KV<K, V>, K, V> toPairFunction() {
+  public static <K, V> PairFunction<KV<K, V>, K, V> toPairFunction() {
     return new PairFunction<KV<K, V>, K, V>() {
       @Override
       public Tuple2<K, V> call(KV<K, V> kv) {


[10/23] beam git commit: Serialize state stream with coders for shuffle and checkpointing.

Posted by am...@apache.org.
Serialize state stream with coders for shuffle and checkpointing.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/da5f8497
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/da5f8497
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/da5f8497

Branch: refs/heads/master
Commit: da5f84970a30aa5afbbe3cf93e3ed28b9df3260d
Parents: b21de69
Author: Sela <an...@paypal.com>
Authored: Mon Feb 20 00:13:23 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:01 2017 +0200

----------------------------------------------------------------------
 .../beam/runners/spark/coders/CoderHelpers.java |  23 ++++
 .../SparkGroupAlsoByWindowViaWindowSet.java     | 135 ++++++++++++-------
 .../spark/stateful/SparkTimerInternals.java     |  17 ++-
 .../streaming/StreamingTransformTranslator.java |   3 +-
 4 files changed, 124 insertions(+), 54 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/da5f8497/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/CoderHelpers.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/CoderHelpers.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/CoderHelpers.java
index 0df66c2..9c46ecf 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/CoderHelpers.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/coders/CoderHelpers.java
@@ -18,16 +18,21 @@
 
 package org.apache.beam.runners.spark.coders;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+
 import com.google.common.collect.Iterables;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
+import javax.annotation.Nonnull;
 import org.apache.beam.runners.spark.util.ByteArray;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.spark.api.java.function.Function;
 import org.apache.spark.api.java.function.PairFunction;
+
 import scala.Tuple2;
 
 /**
@@ -89,6 +94,24 @@ public final class CoderHelpers {
   }
 
   /**
+   * Utility method for deserializing a Iterable of byte arrays using the specified coder.
+   *
+   * @param serialized bytearrays to be deserialized.
+   * @param coder      Coder to deserialize with.
+   * @param <T>        Type of object to be returned.
+   * @return Iterable of deserialized objects.
+   */
+  public static <T> Iterable<T> fromByteArrays(
+      Collection<byte[]> serialized, final Coder<T> coder) {
+    return Iterables.transform(serialized, new com.google.common.base.Function<byte[], T>() {
+      @Override
+      public T apply(@Nonnull byte[] bytes) {
+        return fromByteArray(checkNotNull(bytes, "Cannot decode null values."), coder);
+      }
+    });
+  }
+
+  /**
    * A function wrapper for converting an object to a bytearray.
    *
    * @param coder Coder to serialize with.

http://git-wip-us.apache.org/repos/asf/beam/blob/da5f8497/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
index 2fb4100..5589d82 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
@@ -27,23 +27,28 @@ import org.apache.beam.runners.core.GroupAlsoByWindowsDoFn;
 import org.apache.beam.runners.core.OutputWindowedValue;
 import org.apache.beam.runners.core.ReduceFnRunner;
 import org.apache.beam.runners.core.SystemReduceFn;
-import org.apache.beam.runners.core.TimerInternals.TimerData;
+import org.apache.beam.runners.core.TimerInternals;
 import org.apache.beam.runners.core.triggers.ExecutableTriggerStateMachine;
 import org.apache.beam.runners.core.triggers.TriggerStateMachines;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
+import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.spark.translation.SparkRuntimeContext;
 import org.apache.beam.runners.spark.translation.TranslationUtils;
 import org.apache.beam.runners.spark.translation.WindowingHelpers;
+import org.apache.beam.runners.spark.util.ByteArray;
 import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
 import org.apache.beam.runners.spark.util.LateDataUtils;
 import org.apache.beam.runners.spark.util.UnsupportedSideInputReader;
 import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.coders.IterableCoder;
+import org.apache.beam.sdk.coders.KvCoder;
 import org.apache.beam.sdk.transforms.Aggregator;
 import org.apache.beam.sdk.transforms.Combine;
 import org.apache.beam.sdk.transforms.Sum;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.transforms.windowing.PaneInfo;
 import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.util.WindowedValue.FullWindowedValueCoder;
 import org.apache.beam.sdk.util.WindowingStrategy;
 import org.apache.beam.sdk.values.KV;
 import org.apache.beam.sdk.values.TupleTag;
@@ -97,45 +102,67 @@ public class SparkGroupAlsoByWindowViaWindowSet {
   public static <K, InputT, W extends BoundedWindow>
       JavaDStream<WindowedValue<KV<K, Iterable<InputT>>>> groupAlsoByWindow(
           JavaDStream<WindowedValue<KV<K, Iterable<WindowedValue<InputT>>>>> inputDStream,
-          final Coder<InputT> iCoder,
+          final Coder<K> keyCoder,
+          final Coder<WindowedValue<InputT>> wvCoder,
           final WindowingStrategy<?, W> windowingStrategy,
           final SparkRuntimeContext runtimeContext,
           final List<Integer> sourceIds) {
 
+    final IterableCoder<WindowedValue<InputT>> itrWvCoder = IterableCoder.of(wvCoder);
+    final Coder<InputT> iCoder = ((FullWindowedValueCoder<InputT>) wvCoder).getValueCoder();
+    final Coder<? extends BoundedWindow> wCoder =
+        ((FullWindowedValueCoder<InputT>) wvCoder).getWindowCoder();
+    final Coder<WindowedValue<KV<K, Iterable<InputT>>>> wvKvIterCoder =
+        FullWindowedValueCoder.of(KvCoder.of(keyCoder, IterableCoder.of(iCoder)), wCoder);
+    final TimerInternals.TimerDataCoder timerDataCoder =
+        TimerInternals.TimerDataCoder.of(windowingStrategy.getWindowFn().windowCoder());
+
     long checkpointDurationMillis =
         runtimeContext.getPipelineOptions().as(SparkPipelineOptions.class)
             .getCheckpointDurationMillis();
 
     // we have to switch to Scala API to avoid Optional in the Java API, see: SPARK-4819.
     // we also have a broader API for Scala (access to the actual key and entire iterator).
-    DStream<Tuple2<K, Iterable<WindowedValue<InputT>>>> pairDStream =
+    // we use coders to convert objects in the PCollection to byte arrays, so they
+    // can be transferred over the network for the shuffle and be in serialized form
+    // for checkpointing.
+    // for readability, we add comments with actual type next to byte[].
+    // to shorten line length, we use:
+    //---- WV: WindowedValue
+    //---- Iterable: Itr
+    //---- AccumT: A
+    //---- InputT: I
+    DStream<Tuple2</*K*/ ByteArray, /*Itr<WV<I>>*/ byte[]>> pairDStream =
         inputDStream
             .map(WindowingHelpers.<KV<K, Iterable<WindowedValue<InputT>>>>unwindowFunction())
             .mapToPair(TranslationUtils.<K, Iterable<WindowedValue<InputT>>>toPairFunction())
+            // move to bytes and use coders for deserialization because there's a shuffle
+            // and checkpointing involved.
+            .mapToPair(CoderHelpers.toByteFunction(keyCoder, itrWvCoder))
             .dstream();
-    PairDStreamFunctions<K, Iterable<WindowedValue<InputT>>> pairDStreamFunctions =
+    PairDStreamFunctions<ByteArray, byte[]> pairDStreamFunctions =
         DStream.toPairDStreamFunctions(
         pairDStream,
-        JavaSparkContext$.MODULE$.<K>fakeClassTag(),
-        JavaSparkContext$.MODULE$.<Iterable<WindowedValue<InputT>>>fakeClassTag(),
+        JavaSparkContext$.MODULE$.<ByteArray>fakeClassTag(),
+        JavaSparkContext$.MODULE$.<byte[]>fakeClassTag(),
         null);
     int defaultNumPartitions = pairDStreamFunctions.defaultPartitioner$default$1();
     Partitioner partitioner = pairDStreamFunctions.defaultPartitioner(defaultNumPartitions);
 
     // use updateStateByKey to scan through the state and update elements and timers.
-    DStream<Tuple2<K, Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>
+    DStream<Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers, /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>>
         firedStream = pairDStreamFunctions.updateStateByKey(
             new SerializableFunction1<
-                scala.collection.Iterator<Tuple3<K, Seq<Iterable<WindowedValue<InputT>>>,
-                    Option<Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>>,
-                scala.collection.Iterator<Tuple2<K, Tuple2<StateAndTimers,
-                    List<WindowedValue<KV<K, Iterable<InputT>>>>>>>>() {
+                scala.collection.Iterator<Tuple3</*K*/ ByteArray, Seq</*Itr<WV<I>>*/ byte[]>,
+                    Option<Tuple2<StateAndTimers, /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>>>,
+                scala.collection.Iterator<Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers,
+                    /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>>>() {
 
       @Override
-      public scala.collection.Iterator<Tuple2<K, Tuple2<StateAndTimers,
-          List<WindowedValue<KV<K, Iterable<InputT>>>>>>> apply(
-              final scala.collection.Iterator<Tuple3<K, Seq<Iterable<WindowedValue<InputT>>>,
-              Option<Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>> iter) {
+      public scala.collection.Iterator<Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers,
+          /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>> apply(
+              final scala.collection.Iterator<Tuple3</*K*/ ByteArray, Seq</*Itr<WV<I>>*/ byte[]>,
+              Option<Tuple2<StateAndTimers, /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>>> iter) {
         //--- ACTUAL STATEFUL OPERATION:
         //
         // Input Iterator: the partition (~bundle) of a cogrouping of the input
@@ -149,7 +176,8 @@ public class SparkGroupAlsoByWindowViaWindowSet {
         // (3) Seq.nonEmpty && Option<S>.isDefined: new data with previous state.
 
         final SystemReduceFn<K, InputT, Iterable<InputT>, Iterable<InputT>, W> reduceFn =
-            SystemReduceFn.buffering(iCoder);
+            SystemReduceFn.buffering(
+                ((FullWindowedValueCoder<InputT>) wvCoder).getValueCoder());
         final OutputWindowedValueHolder<K, InputT> outputHolder =
             new OutputWindowedValueHolder<>();
         // use in memory Aggregators since Spark Accumulators are not resilient
@@ -160,25 +188,25 @@ public class SparkGroupAlsoByWindowViaWindowSet {
             GroupAlsoByWindowsDoFn.DROPPED_DUE_TO_LATENESS_COUNTER);
 
         AbstractIterator<
-            Tuple2<K, Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>
-                outIter = new AbstractIterator<Tuple2<K,
-                    Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>>() {
+            Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers, /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>>
+                outIter = new AbstractIterator<Tuple2</*K*/ ByteArray,
+                    Tuple2<StateAndTimers, /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>>() {
                   @Override
-                  protected Tuple2<K, Tuple2<StateAndTimers,
-                      List<WindowedValue<KV<K, Iterable<InputT>>>>>> computeNext() {
+                  protected Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers,
+                      /*WV<KV<K, Itr<I>>>*/ List<byte[]>>> computeNext() {
                     // input iterator is a Spark partition (~bundle), containing keys and their
                     // (possibly) previous-state and (possibly) new data.
                     while (iter.hasNext()) {
                       // for each element in the partition:
-                      Tuple3<K, Seq<Iterable<WindowedValue<InputT>>>, Option<Tuple2<StateAndTimers,
-                          List<WindowedValue<KV<K, Iterable<InputT>>>>>>> next = iter.next();
-                      K key = next._1();
+                      Tuple3<ByteArray, Seq<byte[]>,
+                          Option<Tuple2<StateAndTimers, List<byte[]>>>> next = iter.next();
+                      ByteArray encodedKey = next._1();
+                      K key = CoderHelpers.fromByteArray(encodedKey.getValue(), keyCoder);
 
-                      Seq<Iterable<WindowedValue<InputT>>> seq = next._2();
+                      Seq<byte[]> seq = next._2();
 
                       Option<Tuple2<StateAndTimers,
-                          List<WindowedValue<KV<K, Iterable<InputT>>>>>>
-                              prevStateAndTimersOpt = next._3();
+                          List<byte[]>>> prevStateAndTimersOpt = next._3();
 
                       SparkStateInternals<K> stateInternals;
                       SparkTimerInternals timerInternals = SparkTimerInternals.forStreamFromSources(
@@ -192,7 +220,9 @@ public class SparkGroupAlsoByWindowViaWindowSet {
                         StateAndTimers prevStateAndTimers = prevStateAndTimersOpt.get()._1();
                         stateInternals = SparkStateInternals.forKeyAndState(key,
                             prevStateAndTimers.getState());
-                        timerInternals.addTimers(prevStateAndTimers.getTimers());
+                        Collection<byte[]> serTimers = prevStateAndTimers.getTimers();
+                        timerInternals.addTimers(
+                            SparkTimerInternals.deserializeTimers(serTimers, timerDataCoder));
                       }
 
                       ReduceFnRunner<K, InputT, Iterable<InputT>, W> reduceFnRunner =
@@ -214,7 +244,8 @@ public class SparkGroupAlsoByWindowViaWindowSet {
                       if (!seq.isEmpty()) {
                         // new input for key.
                         try {
-                          Iterable<WindowedValue<InputT>> elementsIterable = seq.head();
+                          Iterable<WindowedValue<InputT>> elementsIterable =
+                              CoderHelpers.fromByteArray(seq.head(), itrWvCoder);
                           Iterable<WindowedValue<InputT>> validElements =
                               LateDataUtils
                                   .dropExpiredWindows(
@@ -247,9 +278,11 @@ public class SparkGroupAlsoByWindowViaWindowSet {
                       List<WindowedValue<KV<K, Iterable<InputT>>>> outputs = outputHolder.get();
                       if (!outputs.isEmpty() || !stateInternals.getState().isEmpty()) {
                         StateAndTimers updated = new StateAndTimers(stateInternals.getState(),
-                            timerInternals.getTimers());
+                            SparkTimerInternals.serializeTimers(
+                                timerInternals.getTimers(), timerDataCoder));
                         // persist Spark's state by outputting.
-                        return new Tuple2<>(key, new Tuple2<>(updated, outputs));
+                        List<byte[]> serOutput = CoderHelpers.toByteArrays(outputs, wvKvIterCoder);
+                        return new Tuple2<>(encodedKey, new Tuple2<>(updated, serOutput));
                       }
                       // an empty state with no output, can be evicted completely - do nothing.
                     }
@@ -271,43 +304,43 @@ public class SparkGroupAlsoByWindowViaWindowSet {
 
         return scala.collection.JavaConversions.asScalaIterator(outIter);
       }
-    }, partitioner, true, JavaSparkContext$.MODULE$.<Tuple2<StateAndTimers,
-        List<WindowedValue<KV<K, Iterable<InputT>>>>>>fakeClassTag());
+    }, partitioner, true,
+        JavaSparkContext$.MODULE$.<Tuple2<StateAndTimers, List<byte[]>>>fakeClassTag());
 
     if (checkpointDurationMillis > 0) {
       firedStream.checkpoint(new Duration(checkpointDurationMillis));
     }
 
     // go back to Java now.
-    JavaPairDStream<K, Tuple2<StateAndTimers, List<WindowedValue<KV<K, Iterable<InputT>>>>>>
+    JavaPairDStream</*K*/ ByteArray, Tuple2<StateAndTimers, /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>
         javaFiredStream = JavaPairDStream.fromPairDStream(
             firedStream,
-            JavaSparkContext$.MODULE$.<K>fakeClassTag(),
-            JavaSparkContext$.MODULE$.<Tuple2<StateAndTimers,
-                List<WindowedValue<KV<K, Iterable<InputT>>>>>>fakeClassTag());
+            JavaSparkContext$.MODULE$.<ByteArray>fakeClassTag(),
+            JavaSparkContext$.MODULE$.<Tuple2<StateAndTimers, List<byte[]>>>fakeClassTag());
 
     // filter state-only output (nothing to fire) and remove the state from the output.
     return javaFiredStream.filter(
-        new Function<Tuple2<K, Tuple2<StateAndTimers,
-            List<WindowedValue<KV<K, Iterable<InputT>>>>>>, Boolean>() {
+        new Function<Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers,
+            /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>, Boolean>() {
               @Override
               public Boolean call(
-                  Tuple2<K, Tuple2<StateAndTimers,
-                  List<WindowedValue<KV<K, Iterable<InputT>>>>>> t2) throws Exception {
+                  Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers,
+                  /*WV<KV<K, Itr<I>>>*/ List<byte[]>>> t2) throws Exception {
                 // filter output if defined.
                 return !t2._2()._2().isEmpty();
               }
         })
         .flatMap(
-            new FlatMapFunction<Tuple2<K, Tuple2<StateAndTimers,
-                List<WindowedValue<KV<K, Iterable<InputT>>>>>>,
+            new FlatMapFunction<Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers,
+                /*WV<KV<K, Itr<I>>>*/ List<byte[]>>>,
                 WindowedValue<KV<K, Iterable<InputT>>>>() {
               @Override
               public Iterable<WindowedValue<KV<K, Iterable<InputT>>>> call(
-                  Tuple2<K, Tuple2<StateAndTimers,
-                  List<WindowedValue<KV<K, Iterable<InputT>>>>>> t2) throws Exception {
+                  Tuple2</*K*/ ByteArray, Tuple2<StateAndTimers,
+                  /*WV<KV<K, Itr<I>>>*/ List<byte[]>>> t2) throws Exception {
                 // drop the state since it is already persisted at this point.
-                return t2._2()._2();
+                // return in serialized form.
+                return CoderHelpers.fromByteArrays(t2._2()._2(), wvKvIterCoder);
               }
         });
   }
@@ -315,20 +348,20 @@ public class SparkGroupAlsoByWindowViaWindowSet {
   private static class StateAndTimers {
     //Serializable state for internals (namespace to state tag to coded value).
     private final Table<String, String, byte[]> state;
-    private final Collection<TimerData> timers;
+    private final Collection<byte[]> serTimers;
 
     private StateAndTimers(
-        Table<String, String, byte[]> state, Collection<TimerData> timers) {
+        Table<String, String, byte[]> state, Collection<byte[]> timers) {
       this.state = state;
-      this.timers = timers;
+      this.serTimers = timers;
     }
 
     public Table<String, String, byte[]> getState() {
       return state;
     }
 
-    public Collection<TimerData> getTimers() {
-      return timers;
+    public Collection<byte[]> getTimers() {
+      return serTimers;
     }
   }
 

http://git-wip-us.apache.org/repos/asf/beam/blob/da5f8497/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
index b9783ef..1949e1d 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkTimerInternals.java
@@ -29,6 +29,7 @@ import java.util.Set;
 import javax.annotation.Nullable;
 import org.apache.beam.runners.core.StateNamespace;
 import org.apache.beam.runners.core.TimerInternals;
+import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.spark.util.GlobalWatermarkHolder.SparkWatermarks;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.util.TimeDomain;
@@ -109,8 +110,10 @@ class SparkTimerInternals implements TimerInternals {
     return toFire;
   }
 
-  void addTimers(Collection<TimerData> timers) {
-    this.timers.addAll(timers);
+  void addTimers(Iterable<TimerData> timers) {
+    for (TimerData timer: timers) {
+      this.timers.add(timer);
+    }
   }
 
   @Override
@@ -169,4 +172,14 @@ class SparkTimerInternals implements TimerInternals {
     throw new UnsupportedOperationException("Deleting a timer by ID is not yet supported.");
   }
 
+  public static Collection<byte[]> serializeTimers(
+      Collection<TimerData> timers, TimerDataCoder timerDataCoder) {
+    return CoderHelpers.toByteArrays(timers, timerDataCoder);
+  }
+
+  public static Iterable<TimerData> deserializeTimers(
+      Collection<byte[]> serTimers, TimerDataCoder timerDataCoder) {
+    return CoderHelpers.fromByteArrays(serTimers, timerDataCoder);
+  }
+
 }

http://git-wip-us.apache.org/repos/asf/beam/blob/da5f8497/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
index 7abf5be..a98eff2 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
@@ -258,7 +258,8 @@ final class StreamingTransformTranslator {
         JavaDStream<WindowedValue<KV<K, Iterable<V>>>> outStream =
             SparkGroupAlsoByWindowViaWindowSet.groupAlsoByWindow(
                 groupedByKeyStream,
-                coder.getValueCoder(),
+                coder.getKeyCoder(),
+                wvCoder,
                 windowingStrategy,
                 runtimeContext,
                 streamSources);


[13/23] beam git commit: Fix runnable-on-service profile in the Spark runner.

Posted by am...@apache.org.
Fix runnable-on-service profile in the Spark runner.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/c08e7d86
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/c08e7d86
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/c08e7d86

Branch: refs/heads/master
Commit: c08e7d86dd289640361e25a68ba7eb827938473e
Parents: 82d754c
Author: Sela <an...@paypal.com>
Authored: Tue Feb 21 16:57:18 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:05 2017 +0200

----------------------------------------------------------------------
 runners/spark/pom.xml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/c08e7d86/runners/spark/pom.xml
----------------------------------------------------------------------
diff --git a/runners/spark/pom.xml b/runners/spark/pom.xml
index 3ef7ef4..1669833 100644
--- a/runners/spark/pom.xml
+++ b/runners/spark/pom.xml
@@ -57,7 +57,7 @@
     <profile>
       <!-- This profile adds execution of RunnableOnService integration tests
            against a local Spark endpoint. -->
-      <id>local-runnable-on-service-tests</id>
+      <id>runnable-on-service-tests</id>
       <activation><activeByDefault>false</activeByDefault></activation>
       <build>
         <plugins>
@@ -79,6 +79,8 @@
                     org.apache.beam.sdk.testing.UsesSplittableParDo,
                     org.apache.beam.sdk.testing.UsesCommittedMetrics
                   </excludedGroups>
+                  <parallel>none</parallel>
+                  <threadCount>4</threadCount>
                   <forkCount>1</forkCount>
                   <reuseForks>false</reuseForks>
                   <failIfNoTests>true</failIfNoTests>


[18/23] beam git commit: Use a PipelineRule for test pipelines.

Posted by am...@apache.org.
Use a PipelineRule for test pipelines.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/4ca56806
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/4ca56806
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/4ca56806

Branch: refs/heads/master
Commit: 4ca5680681e14c4be8b0ac1f3e1244c9d439e6d8
Parents: bd41d9a
Author: Sela <an...@paypal.com>
Authored: Mon Feb 27 19:24:45 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:07 2017 +0200

----------------------------------------------------------------------
 runners/spark/pom.xml                           |   1 -
 .../runners/spark/SparkPipelineOptions.java     |   9 --
 .../runners/spark/TestSparkPipelineOptions.java |  18 ++++
 .../beam/runners/spark/TestSparkRunner.java     |  28 ++---
 .../beam/runners/spark/ForceStreamingTest.java  |   8 +-
 .../apache/beam/runners/spark/PipelineRule.java | 103 +++++++++++++++++++
 .../metrics/sink/NamedAggregatorsTest.java      |   9 +-
 .../beam/runners/spark/io/AvroPipelineTest.java |   6 +-
 .../beam/runners/spark/io/NumShardsTest.java    |   6 +-
 .../io/hadoop/HadoopFileFormatPipelineTest.java |   6 +-
 .../spark/translation/StorageLevelTest.java     |   8 +-
 .../translation/streaming/CreateStreamTest.java |  77 ++++----------
 .../utils/SparkTestPipelineOptions.java         |  42 --------
 .../SparkTestPipelineOptionsForStreaming.java   |  48 ---------
 14 files changed, 175 insertions(+), 194 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/pom.xml
----------------------------------------------------------------------
diff --git a/runners/spark/pom.xml b/runners/spark/pom.xml
index f926bf5..409fc27 100644
--- a/runners/spark/pom.xml
+++ b/runners/spark/pom.xml
@@ -80,7 +80,6 @@
                     org.apache.beam.sdk.testing.UsesCommittedMetrics
                   </excludedGroups>
                   <parallel>none</parallel>
-                  <threadCount>4</threadCount>
                   <forkCount>1</forkCount>
                   <reuseForks>false</reuseForks>
                   <failIfNoTests>true</failIfNoTests>

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
index 52d8ce1..26b549b 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/SparkPipelineOptions.java
@@ -101,13 +101,4 @@ public interface SparkPipelineOptions
   boolean getUsesProvidedSparkContext();
   void setUsesProvidedSparkContext(boolean value);
 
-  @Description("A special flag that forces streaming in tests.")
-  @Default.Boolean(false)
-  boolean isForceStreaming();
-  void setForceStreaming(boolean forceStreaming);
-
-  @Description("A forced timeout (millis), mostly for testing.")
-  @Default.Long(3000L)
-  Long getForcedTimeout();
-  void setForcedTimeout(Long forcedTimeout);
 }

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java
new file mode 100644
index 0000000..2cb58d8
--- /dev/null
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkPipelineOptions.java
@@ -0,0 +1,18 @@
+package org.apache.beam.runners.spark;
+
+import org.apache.beam.sdk.options.Default;
+import org.apache.beam.sdk.options.Description;
+import org.apache.beam.sdk.testing.TestPipelineOptions;
+
+
+/**
+ * A {@link SparkPipelineOptions} for tests.
+ */
+public interface TestSparkPipelineOptions extends SparkPipelineOptions, TestPipelineOptions {
+
+  @Description("A special flag that forces streaming in tests.")
+  @Default.Boolean(false)
+  boolean isForceStreaming();
+  void setForceStreaming(boolean forceStreaming);
+
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
index 5d71ea5..035da00 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
@@ -18,6 +18,7 @@
 
 package org.apache.beam.runners.spark;
 
+import static com.google.common.base.Preconditions.checkNotNull;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.is;
 
@@ -33,7 +34,6 @@ import org.apache.beam.sdk.options.PipelineOptions;
 import org.apache.beam.sdk.options.PipelineOptionsValidator;
 import org.apache.beam.sdk.runners.PipelineRunner;
 import org.apache.beam.sdk.testing.PAssert;
-import org.apache.beam.sdk.testing.TestPipelineOptions;
 import org.apache.beam.sdk.transforms.PTransform;
 import org.apache.beam.sdk.transforms.ParDo;
 import org.apache.beam.sdk.util.ValueWithRecordId;
@@ -76,15 +76,15 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
   private boolean isForceStreaming;
   private int expectedNumberOfAssertions = 0;
 
-  private TestSparkRunner(SparkPipelineOptions options) {
+  private TestSparkRunner(TestSparkPipelineOptions options) {
     this.delegate = SparkRunner.fromOptions(options);
     this.isForceStreaming = options.isForceStreaming();
   }
 
   public static TestSparkRunner fromOptions(PipelineOptions options) {
     // Default options suffice to set it up as a test runner
-    SparkPipelineOptions sparkOptions =
-        PipelineOptionsValidator.validate(SparkPipelineOptions.class, options);
+    TestSparkPipelineOptions sparkOptions =
+        PipelineOptionsValidator.validate(TestSparkPipelineOptions.class, options);
     return new TestSparkRunner(sparkOptions);
   }
 
@@ -115,22 +115,22 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
 
   @Override
   public SparkPipelineResult run(Pipeline pipeline) {
-    SparkPipelineOptions sparkOptions = pipeline.getOptions().as(SparkPipelineOptions.class);
+    TestSparkPipelineOptions testSparkPipelineOptions =
+        pipeline.getOptions().as(TestSparkPipelineOptions.class);
     SparkPipelineResult result = null;
     // clear state of Aggregators, Metrics and Watermarks.
     AggregatorsAccumulator.clear();
     SparkMetricsContainer.clear();
     GlobalWatermarkHolder.clear();
 
-    TestPipelineOptions testPipelineOptions = pipeline.getOptions().as(TestPipelineOptions.class);
-    LOG.info("About to run test pipeline " + sparkOptions.getJobName());
+    LOG.info("About to run test pipeline " + testSparkPipelineOptions.getJobName());
 
     // if the pipeline was executed in streaming mode, validate aggregators.
     if (isForceStreaming) {
       try {
         result = delegate.run(pipeline);
-        long timeout = sparkOptions.getForcedTimeout();
-        result.waitUntilFinish(Duration.millis(timeout));
+        Long timeout = testSparkPipelineOptions.getTestTimeoutSeconds();
+        result.waitUntilFinish(Duration.standardSeconds(checkNotNull(timeout)));
         // validate assertion succeeded (at least once).
         int successAssertions = result.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
         assertThat(
@@ -149,12 +149,12 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
         LOG.info(
             String.format(
                 "Successfully asserted pipeline %s with %d successful assertions.",
-                sparkOptions.getJobName(),
+                testSparkPipelineOptions.getJobName(),
                 successAssertions));
-        } finally {
+      } finally {
         try {
           // cleanup checkpoint dir.
-          FileUtils.deleteDirectory(new File(sparkOptions.getCheckpointDir()));
+          FileUtils.deleteDirectory(new File(testSparkPipelineOptions.getCheckpointDir()));
         } catch (IOException e) {
           throw new RuntimeException("Failed to clear checkpoint tmp dir.", e);
         }
@@ -164,8 +164,8 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
       result = delegate.run(pipeline);
       result.waitUntilFinish();
       // assert via matchers.
-      assertThat(result, testPipelineOptions.getOnCreateMatcher());
-      assertThat(result, testPipelineOptions.getOnSuccessMatcher());
+      assertThat(result, testSparkPipelineOptions.getOnCreateMatcher());
+      assertThat(result, testSparkPipelineOptions.getOnSuccessMatcher());
     }
     return result;
   }

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
index c3026ce..9b39558 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/ForceStreamingTest.java
@@ -21,7 +21,6 @@ package org.apache.beam.runners.spark;
 import static org.hamcrest.MatcherAssert.assertThat;
 
 import java.io.IOException;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.io.BoundedReadFromUnboundedSource;
 import org.apache.beam.sdk.io.CountingSource;
@@ -46,14 +45,11 @@ import org.junit.Test;
 public class ForceStreamingTest {
 
   @Rule
-  public SparkTestPipelineOptionsForStreaming commonOptions =
-      new SparkTestPipelineOptionsForStreaming();
+  public final PipelineRule pipelineRule = PipelineRule.streaming();
 
   @Test
   public void test() throws IOException {
-    SparkPipelineOptions options = commonOptions.getOptions();
-    options.setForceStreaming(true);
-    Pipeline pipeline = Pipeline.create(options);
+    Pipeline pipeline = pipelineRule.createPipeline();
 
     // apply the BoundedReadFromUnboundedSource.
     BoundedReadFromUnboundedSource<?> boundedRead =

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java
new file mode 100644
index 0000000..bb42510
--- /dev/null
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/PipelineRule.java
@@ -0,0 +1,103 @@
+package org.apache.beam.runners.spark;
+
+import org.apache.beam.sdk.Pipeline;
+import org.apache.beam.sdk.options.PipelineOptionsFactory;
+import org.joda.time.Duration;
+import org.junit.rules.ExternalResource;
+import org.junit.rules.RuleChain;
+import org.junit.rules.TemporaryFolder;
+import org.junit.rules.TestName;
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+/**
+ * A {@link org.junit.Rule} to provide a {@link Pipeline} instance for Spark runner tests.
+ */
+public class PipelineRule implements TestRule {
+
+  private final TestName testName = new TestName();
+
+  private final SparkPipelineRule delegate;
+  private final RuleChain chain;
+
+  private PipelineRule() {
+    this.delegate = new SparkPipelineRule(testName);
+    this.chain = RuleChain.outerRule(testName).around(this.delegate);
+  }
+
+  private PipelineRule(Duration forcedTimeout) {
+    this.delegate = new SparkStreamingPipelineRule(forcedTimeout, testName);
+    this.chain = RuleChain.outerRule(testName).around(this.delegate);
+  }
+
+  public static PipelineRule streaming() {
+    return new PipelineRule(Duration.standardSeconds(5));
+  }
+
+  public static PipelineRule batch() {
+    return new PipelineRule();
+  }
+
+  public Duration batchDuration() {
+    return Duration.millis(delegate.options.getBatchIntervalMillis());
+  }
+
+  public SparkPipelineOptions getOptions() {
+    return delegate.options;
+  }
+
+  public Pipeline createPipeline() {
+    return Pipeline.create(delegate.options);
+  }
+
+  @Override
+  public Statement apply(Statement statement, Description description) {
+    return chain.apply(statement, description);
+  }
+
+  private static class SparkStreamingPipelineRule extends SparkPipelineRule {
+
+    private final TemporaryFolder temporaryFolder = new TemporaryFolder();
+    private final Duration forcedTimeout;
+
+    SparkStreamingPipelineRule(Duration forcedTimeout, TestName testName) {
+      super(testName);
+      this.forcedTimeout = forcedTimeout;
+    }
+
+    @Override
+    protected void before() throws Throwable {
+      super.before();
+      temporaryFolder.create();
+      options.setForceStreaming(true);
+      options.setTestTimeoutSeconds(forcedTimeout.getStandardSeconds());
+      options.setCheckpointDir(
+          temporaryFolder.newFolder(options.getJobName()).toURI().toURL().toString());
+    }
+
+    @Override
+    protected void after() {
+      temporaryFolder.delete();
+    }
+  }
+
+  private static class SparkPipelineRule extends ExternalResource {
+
+    protected final TestSparkPipelineOptions options =
+        PipelineOptionsFactory.as(TestSparkPipelineOptions.class);
+
+    private final TestName testName;
+
+    private SparkPipelineRule(TestName testName) {
+      this.testName = testName;
+    }
+
+    @Override
+    protected void before() throws Throwable {
+      options.setRunner(TestSparkRunner.class);
+      options.setEnableSparkMetricSinks(false);
+      options.setJobName(testName.getMethodName());
+    }
+  }
+}

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
index 2f7202c..a192807 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/aggregators/metrics/sink/NamedAggregatorsTest.java
@@ -26,12 +26,12 @@ import com.google.common.collect.ImmutableSet;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Set;
+import org.apache.beam.runners.spark.PipelineRule;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
 import org.apache.beam.runners.spark.aggregators.ClearAggregatorsRule;
 import org.apache.beam.runners.spark.aggregators.SparkAggregators;
 import org.apache.beam.runners.spark.examples.WordCount;
 import org.apache.beam.runners.spark.translation.SparkContextFactory;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptions;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
 import org.apache.beam.sdk.options.PipelineOptionsFactory;
@@ -56,12 +56,11 @@ public class NamedAggregatorsTest {
   public ClearAggregatorsRule clearAggregators = new ClearAggregatorsRule();
 
   @Rule
-  public final SparkTestPipelineOptions pipelineOptions = new SparkTestPipelineOptions();
+  public final PipelineRule pipelineRule = PipelineRule.batch();
 
   private Pipeline createSparkPipeline() {
-    SparkPipelineOptions options = pipelineOptions.getOptions();
-    options.setEnableSparkMetricSinks(true);
-    return Pipeline.create(options);
+    pipelineRule.getOptions().setEnableSparkMetricSinks(true);
+    return pipelineRule.createPipeline();
   }
 
   private void runPipeline() {

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/io/AvroPipelineTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/io/AvroPipelineTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/io/AvroPipelineTest.java
index c5bb583..2a73c28 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/io/AvroPipelineTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/io/AvroPipelineTest.java
@@ -33,7 +33,7 @@ import org.apache.avro.generic.GenericData;
 import org.apache.avro.generic.GenericDatumReader;
 import org.apache.avro.generic.GenericDatumWriter;
 import org.apache.avro.generic.GenericRecord;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptions;
+import org.apache.beam.runners.spark.PipelineRule;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.io.AvroIO;
 import org.apache.beam.sdk.values.PCollection;
@@ -54,7 +54,7 @@ public class AvroPipelineTest {
   public final TemporaryFolder tmpDir = new TemporaryFolder();
 
   @Rule
-  public final SparkTestPipelineOptions pipelineOptions = new SparkTestPipelineOptions();
+  public final PipelineRule pipelineRule = PipelineRule.batch();
 
   @Before
   public void setUp() throws IOException {
@@ -72,7 +72,7 @@ public class AvroPipelineTest {
     savedRecord.put("siblingnames", Lists.newArrayList("Jimmy", "Jane"));
     populateGenericFile(Lists.newArrayList(savedRecord), schema);
 
-    Pipeline p = Pipeline.create(pipelineOptions.getOptions());
+    Pipeline p = pipelineRule.createPipeline();
     PCollection<GenericRecord> input = p.apply(
         AvroIO.Read.from(inputFile.getAbsolutePath()).withSchema(schema));
     input.apply(AvroIO.Write.to(outputDir.getAbsolutePath()).withSchema(schema));

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/io/NumShardsTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/io/NumShardsTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/io/NumShardsTest.java
index 34d6818..c936ed3 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/io/NumShardsTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/io/NumShardsTest.java
@@ -30,8 +30,8 @@ import java.io.IOException;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Set;
+import org.apache.beam.runners.spark.PipelineRule;
 import org.apache.beam.runners.spark.examples.WordCount;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptions;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
 import org.apache.beam.sdk.io.TextIO;
@@ -59,7 +59,7 @@ public class NumShardsTest {
   public final TemporaryFolder tmpDir = new TemporaryFolder();
 
   @Rule
-  public final SparkTestPipelineOptions pipelineOptions = new SparkTestPipelineOptions();
+  public final PipelineRule pipelineRule = PipelineRule.batch();
 
   @Before
   public void setUp() throws IOException {
@@ -69,7 +69,7 @@ public class NumShardsTest {
 
   @Test
   public void testText() throws Exception {
-    Pipeline p = Pipeline.create(pipelineOptions.getOptions());
+    Pipeline p = pipelineRule.createPipeline();
     PCollection<String> inputWords = p.apply(Create.of(WORDS).withCoder(StringUtf8Coder.of()));
     PCollection<String> output = inputWords.apply(new WordCount.CountWords())
         .apply(MapElements.via(new WordCount.FormatAsTextFn()));

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/io/hadoop/HadoopFileFormatPipelineTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/io/hadoop/HadoopFileFormatPipelineTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/io/hadoop/HadoopFileFormatPipelineTest.java
index 9efc670..a5072d6 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/io/hadoop/HadoopFileFormatPipelineTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/io/hadoop/HadoopFileFormatPipelineTest.java
@@ -22,8 +22,8 @@ import static org.junit.Assert.assertEquals;
 
 import java.io.File;
 import java.io.IOException;
+import org.apache.beam.runners.spark.PipelineRule;
 import org.apache.beam.runners.spark.coders.WritableCoder;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptions;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.coders.KvCoder;
 import org.apache.beam.sdk.values.KV;
@@ -52,7 +52,7 @@ public class HadoopFileFormatPipelineTest {
   private File outputFile;
 
   @Rule
-  public final SparkTestPipelineOptions pipelineOptions = new SparkTestPipelineOptions();
+  public final PipelineRule pipelineRule = PipelineRule.batch();
 
   @Rule
   public final TemporaryFolder tmpDir = new TemporaryFolder();
@@ -68,7 +68,7 @@ public class HadoopFileFormatPipelineTest {
   public void testSequenceFile() throws Exception {
     populateFile();
 
-    Pipeline p = Pipeline.create(pipelineOptions.getOptions());
+    Pipeline p = pipelineRule.createPipeline();
     @SuppressWarnings("unchecked")
     Class<? extends FileInputFormat<IntWritable, Text>> inputFormatClass =
         (Class<? extends FileInputFormat<IntWritable, Text>>)

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/StorageLevelTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/StorageLevelTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/StorageLevelTest.java
index 48105e1..4dc5dee 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/StorageLevelTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/StorageLevelTest.java
@@ -17,7 +17,7 @@
  */
 package org.apache.beam.runners.spark.translation;
 
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptions;
+import org.apache.beam.runners.spark.PipelineRule;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.testing.PAssert;
 import org.apache.beam.sdk.transforms.Count;
@@ -32,12 +32,12 @@ import org.junit.Test;
 public class StorageLevelTest {
 
   @Rule
-  public final transient SparkTestPipelineOptions pipelineOptions = new SparkTestPipelineOptions();
+  public final transient PipelineRule pipelineRule = PipelineRule.batch();
 
   @Test
   public void test() throws Exception {
-    pipelineOptions.getOptions().setStorageLevel("DISK_ONLY");
-    Pipeline p = Pipeline.create(pipelineOptions.getOptions());
+    pipelineRule.getOptions().setStorageLevel("DISK_ONLY");
+    Pipeline p = pipelineRule.createPipeline();
 
     PCollection<String> pCollection = p.apply(Create.of("foo"));
 

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
index 9ee5cc5..f2783a1 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/CreateStreamTest.java
@@ -24,10 +24,9 @@ import static org.junit.Assert.assertThat;
 
 import java.io.IOException;
 import java.io.Serializable;
+import org.apache.beam.runners.spark.PipelineRule;
 import org.apache.beam.runners.spark.ReuseSparkContextRule;
-import org.apache.beam.runners.spark.SparkPipelineOptions;
 import org.apache.beam.runners.spark.io.CreateStream;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
 import org.apache.beam.sdk.coders.VarIntCoder;
@@ -59,8 +58,6 @@ import org.joda.time.Instant;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
-import org.junit.rules.TemporaryFolder;
-import org.junit.rules.TestName;
 
 
 /**
@@ -76,27 +73,18 @@ import org.junit.rules.TestName;
 public class CreateStreamTest implements Serializable {
 
   @Rule
-  public transient TemporaryFolder checkpointParentDir = new TemporaryFolder();
+  public final transient PipelineRule pipelineRule = PipelineRule.streaming();
   @Rule
-  public transient SparkTestPipelineOptionsForStreaming commonOptions =
-      new SparkTestPipelineOptionsForStreaming();
+  public final transient ReuseSparkContextRule noContextResue = ReuseSparkContextRule.no();
   @Rule
-  public transient ReuseSparkContextRule noContextResue = ReuseSparkContextRule.no();
-  @Rule
-  public transient TestName testName = new TestName();
-  @Rule
-  public transient ExpectedException thrown = ExpectedException.none();
+  public final transient ExpectedException thrown = ExpectedException.none();
 
   @Test
   public void testLateDataAccumulating() throws IOException {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    Pipeline p = Pipeline.create(options);
-    options.setJobName(testName.getMethodName());
-    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-
+    Pipeline p = pipelineRule.createPipeline();
     Instant instant = new Instant(0);
     CreateStream<TimestampedValue<Integer>> source =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch()
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(6)))
             .nextBatch(
@@ -167,13 +155,9 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testDiscardingMode() throws IOException {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    Pipeline p = Pipeline.create(options);
-    options.setJobName(testName.getMethodName());
-    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-
+    Pipeline p = pipelineRule.createPipeline();
     CreateStream<TimestampedValue<String>> source =
-        CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+        CreateStream.<TimestampedValue<String>>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch(
                 TimestampedValue.of("firstPane", new Instant(100)),
                 TimestampedValue.of("alsoFirstPane", new Instant(200)))
@@ -221,14 +205,10 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testFirstElementLate() throws IOException {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    Pipeline p = Pipeline.create(options);
-    options.setJobName(testName.getMethodName());
-    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-
+    Pipeline p = pipelineRule.createPipeline();
     Instant lateElementTimestamp = new Instant(-1_000_000);
     CreateStream<TimestampedValue<String>> source =
-        CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+        CreateStream.<TimestampedValue<String>>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch()
             .advanceWatermarkForNextBatch(new Instant(0))
             .nextBatch(
@@ -261,14 +241,10 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testElementsAtAlmostPositiveInfinity() throws IOException {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    Pipeline p = Pipeline.create(options);
-    options.setJobName(testName.getMethodName());
-    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-
+    Pipeline p = pipelineRule.createPipeline();
     Instant endOfGlobalWindow = GlobalWindow.INSTANCE.maxTimestamp();
     CreateStream<TimestampedValue<String>> source =
-        CreateStream.<TimestampedValue<String>>withBatchInterval(batchDuration)
+        CreateStream.<TimestampedValue<String>>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch(
                 TimestampedValue.of("foo", endOfGlobalWindow),
                 TimestampedValue.of("bar", endOfGlobalWindow))
@@ -292,17 +268,13 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testMultipleStreams() throws IOException {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    Pipeline p = Pipeline.create(options);
-    options.setJobName(testName.getMethodName());
-    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-
+    Pipeline p = pipelineRule.createPipeline();
     CreateStream<String> source =
-        CreateStream.<String>withBatchInterval(batchDuration)
+        CreateStream.<String>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch("foo", "bar")
             .advanceNextBatchWatermarkToInfinity();
     CreateStream<Integer> other =
-        CreateStream.<Integer>withBatchInterval(batchDuration)
+        CreateStream.<Integer>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch(1, 2, 3, 4)
             .advanceNextBatchWatermarkToInfinity();
 
@@ -327,14 +299,10 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testFlattenedWithWatermarkHold() throws IOException {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    Pipeline p = Pipeline.create(options);
-    options.setJobName(testName.getMethodName());
-    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-
+    Pipeline p = pipelineRule.createPipeline();
     Instant instant = new Instant(0);
     CreateStream<TimestampedValue<Integer>> source1 =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch()
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(5)))
             .nextBatch(
@@ -343,7 +311,7 @@ public class CreateStreamTest implements Serializable {
                 TimestampedValue.of(3, instant))
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(10)));
     CreateStream<TimestampedValue<Integer>> source2 =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch()
             .advanceWatermarkForNextBatch(instant.plus(Duration.standardMinutes(1)))
             .nextBatch(
@@ -384,9 +352,8 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testElementAtPositiveInfinityThrows() {
-    Duration batchDuration = Duration.millis(commonOptions.getOptions().getBatchIntervalMillis());
     CreateStream<TimestampedValue<Integer>> source =
-        CreateStream.<TimestampedValue<Integer>>withBatchInterval(batchDuration)
+        CreateStream.<TimestampedValue<Integer>>withBatchInterval(pipelineRule.batchDuration())
             .nextBatch(TimestampedValue.of(-1, BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L)));
     thrown.expect(IllegalArgumentException.class);
     source.nextBatch(TimestampedValue.of(1, BoundedWindow.TIMESTAMP_MAX_VALUE));
@@ -394,9 +361,8 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testAdvanceWatermarkNonMonotonicThrows() {
-    Duration batchDuration = Duration.millis(commonOptions.getOptions().getBatchIntervalMillis());
     CreateStream<Integer> source =
-        CreateStream.<Integer>withBatchInterval(batchDuration)
+        CreateStream.<Integer>withBatchInterval(pipelineRule.batchDuration())
             .advanceWatermarkForNextBatch(new Instant(0L));
     thrown.expect(IllegalArgumentException.class);
     source.advanceWatermarkForNextBatch(new Instant(-1L));
@@ -404,9 +370,8 @@ public class CreateStreamTest implements Serializable {
 
   @Test
   public void testAdvanceWatermarkEqualToPositiveInfinityThrows() {
-    Duration batchDuration = Duration.millis(commonOptions.getOptions().getBatchIntervalMillis());
     CreateStream<Integer> source =
-        CreateStream.<Integer>withBatchInterval(batchDuration)
+        CreateStream.<Integer>withBatchInterval(pipelineRule.batchDuration())
             .advanceWatermarkForNextBatch(BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L));
     thrown.expect(IllegalArgumentException.class);
     source.advanceWatermarkForNextBatch(BoundedWindow.TIMESTAMP_MAX_VALUE);

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java
deleted file mode 100644
index efc17d3..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptions.java
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.translation.streaming.utils;
-
-import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.apache.beam.runners.spark.TestSparkRunner;
-import org.apache.beam.sdk.options.PipelineOptionsFactory;
-import org.junit.rules.ExternalResource;
-
-/**
- * A rule to create a common {@link SparkPipelineOptions} test options for spark-runner.
- */
-public class SparkTestPipelineOptions extends ExternalResource {
-
-  protected final SparkPipelineOptions options =
-      PipelineOptionsFactory.as(SparkPipelineOptions.class);
-
-  @Override
-  protected void before() throws Throwable {
-    options.setRunner(TestSparkRunner.class);
-    options.setEnableSparkMetricSinks(false);
-  }
-
-  public SparkPipelineOptions getOptions() {
-    return options;
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/4ca56806/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java
deleted file mode 100644
index dd3e4c8..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/SparkTestPipelineOptionsForStreaming.java
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.beam.runners.spark.translation.streaming.utils;
-
-import java.io.IOException;
-import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.joda.time.Duration;
-import org.junit.rules.TemporaryFolder;
-
-
-/**
- * A rule to create a common {@link SparkPipelineOptions} for testing streaming pipelines.
- */
-public class SparkTestPipelineOptionsForStreaming extends SparkTestPipelineOptions {
-
-  private static final int DEFAULT_NUMBER_OF_BATCHES_TIMEOUT = 5;
-
-  public SparkPipelineOptions withTmpCheckpointDir(TemporaryFolder parent)
-      throws IOException {
-    // tests use JUnit's TemporaryFolder path in the form of: /.../junit/...
-    options.setCheckpointDir(parent.newFolder(options.getJobName()).toURI().toURL().toString());
-    options.setForceStreaming(true);
-    // set the default timeout to DEFAULT_NUMBER_OF_BATCHES_TIMEOUT x batchDuration
-    // to allow pipelines to finish.
-    Duration batchDuration = Duration.millis(options.getBatchIntervalMillis());
-    // set the checkpoint duration to match interval.
-    options.setCheckpointDurationMillis(batchDuration.getMillis());
-    long forcedTimeout = batchDuration.multipliedBy(DEFAULT_NUMBER_OF_BATCHES_TIMEOUT).getMillis();
-    options.setForcedTimeout(forcedTimeout);
-    return options;
-  }
-}


[09/23] beam git commit: Fix streaming translation of Flatten and Window, make CreateStream eager.

Posted by am...@apache.org.
Fix streaming translation of Flatten and Window, make CreateStream eager.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/9f143504
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/9f143504
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/9f143504

Branch: refs/heads/master
Commit: 9f143504f7ade5bb0a966dcef645a834277632ef
Parents: 96abe4f
Author: Sela <an...@paypal.com>
Authored: Sat Feb 18 22:01:58 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:59 2017 +0200

----------------------------------------------------------------------
 .../spark/translation/EvaluationContext.java    |   6 --
 .../streaming/StreamingTransformTranslator.java | 101 +++++++++----------
 .../translation/streaming/UnboundedDataset.java |  50 +--------
 3 files changed, 52 insertions(+), 105 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/9f143504/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/EvaluationContext.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/EvaluationContext.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/EvaluationContext.java
index a35aff2..329e047 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/EvaluationContext.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/EvaluationContext.java
@@ -27,7 +27,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.apache.beam.runners.spark.translation.streaming.UnboundedDataset;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.transforms.AppliedPTransform;
@@ -136,11 +135,6 @@ public class EvaluationContext {
     datasets.put(getOutput(transform), new BoundedDataset<>(values, jsc, coder));
   }
 
-  public <T> void putUnboundedDatasetFromQueue(
-      PTransform<?, ? extends PValue> transform, Iterable<Iterable<T>> values, Coder<T> coder) {
-    datasets.put(getOutput(transform), new UnboundedDataset<>(values, jssc, coder));
-  }
-
   public Dataset borrowDataset(PTransform<? extends PValue, ?> transform) {
     return borrowDataset(getInput(transform));
   }

http://git-wip-us.apache.org/repos/asf/beam/blob/9f143504/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
index e90b490..7abf5be 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
@@ -22,12 +22,18 @@ import static com.google.common.base.Preconditions.checkState;
 import static org.apache.beam.runners.spark.translation.TranslationUtils.rejectSplittable;
 import static org.apache.beam.runners.spark.translation.TranslationUtils.rejectStateAndTimers;
 
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Iterables;
 import com.google.common.collect.Maps;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.Queue;
+import java.util.concurrent.LinkedBlockingQueue;
 import org.apache.beam.runners.spark.aggregators.NamedAggregators;
 import org.apache.beam.runners.spark.aggregators.SparkAggregators;
+import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.spark.io.ConsoleIO;
 import org.apache.beam.runners.spark.io.CreateStream;
 import org.apache.beam.runners.spark.io.SparkUnboundedSource;
@@ -48,6 +54,7 @@ import org.apache.beam.runners.spark.translation.SparkRuntimeContext;
 import org.apache.beam.runners.spark.translation.TransformEvaluator;
 import org.apache.beam.runners.spark.translation.TranslationUtils;
 import org.apache.beam.runners.spark.translation.WindowingHelpers;
+import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
 import org.apache.beam.runners.spark.util.SideInputBroadcast;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.KvCoder;
@@ -60,8 +67,6 @@ import org.apache.beam.sdk.transforms.GroupByKey;
 import org.apache.beam.sdk.transforms.PTransform;
 import org.apache.beam.sdk.transforms.ParDo;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
-import org.apache.beam.sdk.transforms.windowing.FixedWindows;
-import org.apache.beam.sdk.transforms.windowing.SlidingWindows;
 import org.apache.beam.sdk.transforms.windowing.Window;
 import org.apache.beam.sdk.transforms.windowing.WindowFn;
 import org.apache.beam.sdk.util.CombineFnUtil;
@@ -76,10 +81,10 @@ import org.apache.spark.api.java.JavaPairRDD;
 import org.apache.spark.api.java.JavaRDD;
 import org.apache.spark.api.java.JavaSparkContext;
 import org.apache.spark.api.java.function.Function;
-import org.apache.spark.streaming.Duration;
-import org.apache.spark.streaming.Durations;
 import org.apache.spark.streaming.api.java.JavaDStream;
+import org.apache.spark.streaming.api.java.JavaInputDStream;
 import org.apache.spark.streaming.api.java.JavaPairDStream;
+import org.apache.spark.streaming.api.java.JavaStreamingContext;
 
 
 /**
@@ -116,13 +121,35 @@ final class StreamingTransformTranslator {
     };
   }
 
-  private static <T> TransformEvaluator<CreateStream.QueuedValues<T>> createFromQueue() {
-    return new TransformEvaluator<CreateStream.QueuedValues<T>>() {
+  private static <T> TransformEvaluator<CreateStream<T>> createFromQueue() {
+    return new TransformEvaluator<CreateStream<T>>() {
       @Override
-      public void evaluate(CreateStream.QueuedValues<T> transform, EvaluationContext context) {
-        Iterable<Iterable<T>> values = transform.getQueuedValues();
+      public void evaluate(CreateStream<T> transform, EvaluationContext context) {
         Coder<T> coder = context.getOutput(transform).getCoder();
-        context.putUnboundedDatasetFromQueue(transform, values, coder);
+        JavaStreamingContext jssc = context.getStreamingContext();
+        Queue<Iterable<T>> values = transform.getBatches();
+        WindowedValue.ValueOnlyWindowedValueCoder<T> windowCoder =
+            WindowedValue.getValueOnlyCoder(coder);
+        // create the DStream from queue.
+        Queue<JavaRDD<WindowedValue<T>>> rddQueue = new LinkedBlockingQueue<>();
+        for (Iterable<T> v : values) {
+          Iterable<WindowedValue<T>> windowedValues =
+              Iterables.transform(v, WindowingHelpers.<T>windowValueFunction());
+          JavaRDD<WindowedValue<T>> rdd =
+              jssc.sparkContext()
+                  .parallelize(CoderHelpers.toByteArrays(windowedValues, windowCoder))
+                  .map(CoderHelpers.fromByteFunction(windowCoder));
+          rddQueue.offer(rdd);
+        }
+
+        JavaInputDStream<WindowedValue<T>> inputDStream = jssc.queueStream(rddQueue, true);
+        UnboundedDataset<T> unboundedDataset = new UnboundedDataset<T>(
+            inputDStream, Collections.singletonList(inputDStream.inputDStream().id()));
+        // add pre-baked Watermarks for the pre-baked batches.
+        Queue<GlobalWatermarkHolder.SparkWatermarks> times = transform.getTimes();
+        GlobalWatermarkHolder.addAll(
+            ImmutableMap.of(unboundedDataset.getStreamSources().get(0), times));
+        context.putDataset(transform, unboundedDataset);
       }
     };
   }
@@ -136,7 +163,6 @@ final class StreamingTransformTranslator {
         // since this is a streaming pipeline, at least one of the PCollections to "flatten" are
         // unbounded, meaning it represents a DStream.
         // So we could end up with an unbounded unified DStream.
-        final List<JavaRDD<WindowedValue<T>>> rdds = new ArrayList<>();
         final List<JavaDStream<WindowedValue<T>>> dStreams = new ArrayList<>();
         final List<Integer> streamingSources = new ArrayList<>();
         for (TaggedPValue pv : pcs) {
@@ -152,27 +178,18 @@ final class StreamingTransformTranslator {
             streamingSources.addAll(unboundedDataset.getStreamSources());
             dStreams.add(unboundedDataset.getDStream());
           } else {
-            rdds.add(((BoundedDataset<T>) dataset).getRDD());
+            // create a single RDD stream.
+            Queue<JavaRDD<WindowedValue<T>>> q = new LinkedBlockingQueue<>();
+            q.offer(((BoundedDataset) dataset).getRDD());
+            //TODO: this is not recoverable from checkpoint!
+            JavaDStream<WindowedValue<T>> dStream = context.getStreamingContext().queueStream(q);
+            dStreams.add(dStream);
           }
         }
         // start by unifying streams into a single stream.
         JavaDStream<WindowedValue<T>> unifiedStreams =
             context.getStreamingContext().union(dStreams.remove(0), dStreams);
-        // now unify in RDDs.
-        if (rdds.size() > 0) {
-          JavaDStream<WindowedValue<T>> joined =
-              unifiedStreams.transform(
-                  new Function<JavaRDD<WindowedValue<T>>, JavaRDD<WindowedValue<T>>>() {
-                    @Override
-                    public JavaRDD<WindowedValue<T>> call(JavaRDD<WindowedValue<T>> streamRdd)
-                        throws Exception {
-                      return new JavaSparkContext(streamRdd.context()).union(streamRdd, rdds);
-                    }
-                  });
-          context.putDataset(transform, new UnboundedDataset<>(joined, streamingSources));
-        } else {
-          context.putDataset(transform, new UnboundedDataset<>(unifiedStreams, streamingSources));
-        }
+        context.putDataset(transform, new UnboundedDataset<>(unifiedStreams, streamingSources));
       }
     };
   }
@@ -182,42 +199,24 @@ final class StreamingTransformTranslator {
       @Override
       public void evaluate(final Window.Bound<T> transform, EvaluationContext context) {
         @SuppressWarnings("unchecked")
-        WindowFn<? super T, W> windowFn = (WindowFn<? super T, W>) transform.getWindowFn();
-        @SuppressWarnings("unchecked")
         UnboundedDataset<T> unboundedDataset =
             ((UnboundedDataset<T>) context.borrowDataset(transform));
         JavaDStream<WindowedValue<T>> dStream = unboundedDataset.getDStream();
-        // get the right window durations.
-        Duration windowDuration;
-        Duration slideDuration;
-        if (windowFn instanceof FixedWindows) {
-          windowDuration = Durations.milliseconds(((FixedWindows) windowFn).getSize().getMillis());
-          slideDuration = windowDuration;
-        } else if (windowFn instanceof SlidingWindows) {
-          SlidingWindows slidingWindows = (SlidingWindows) windowFn;
-          windowDuration = Durations.milliseconds(slidingWindows.getSize().getMillis());
-          slideDuration = Durations.milliseconds(slidingWindows.getPeriod().getMillis());
-        } else {
-          throw new UnsupportedOperationException(String.format("WindowFn %s is not supported.",
-              windowFn.getClass().getCanonicalName()));
-        }
-        JavaDStream<WindowedValue<T>> windowedDStream =
-            dStream.window(windowDuration, slideDuration);
-        //--- then we apply windowing to the elements
+        JavaDStream<WindowedValue<T>> outputStream;
         if (TranslationUtils.skipAssignWindows(transform, context)) {
-          context.putDataset(transform,
-              new UnboundedDataset<>(windowedDStream, unboundedDataset.getStreamSources()));
+          // do nothing.
+          outputStream = dStream;
         } else {
-          JavaDStream<WindowedValue<T>> outStream = windowedDStream.transform(
+          outputStream = dStream.transform(
               new Function<JavaRDD<WindowedValue<T>>, JavaRDD<WindowedValue<T>>>() {
             @Override
             public JavaRDD<WindowedValue<T>> call(JavaRDD<WindowedValue<T>> rdd) throws Exception {
               return rdd.map(new SparkAssignWindowFn<>(transform.getWindowFn()));
             }
           });
-          context.putDataset(transform,
-              new UnboundedDataset<>(outStream, unboundedDataset.getStreamSources()));
         }
+        context.putDataset(transform,
+            new UnboundedDataset<>(outputStream, unboundedDataset.getStreamSources()));
       }
     };
   }
@@ -427,7 +426,7 @@ final class StreamingTransformTranslator {
     EVALUATORS.put(ParDo.Bound.class, parDo());
     EVALUATORS.put(ParDo.BoundMulti.class, multiDo());
     EVALUATORS.put(ConsoleIO.Write.Unbound.class, print());
-    EVALUATORS.put(CreateStream.QueuedValues.class, createFromQueue());
+    EVALUATORS.put(CreateStream.class, createFromQueue());
     EVALUATORS.put(Window.Bound.class, window());
     EVALUATORS.put(Flatten.FlattenPCollectionList.class, flattenPColl());
   }

http://git-wip-us.apache.org/repos/asf/beam/blob/9f143504/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
index 8624f41..d7f3f34 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
@@ -18,22 +18,12 @@
 
 package org.apache.beam.runners.spark.translation.streaming;
 
-import com.google.common.annotations.VisibleForTesting;
-import com.google.common.collect.Iterables;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Queue;
-import java.util.concurrent.LinkedBlockingQueue;
-import java.util.concurrent.atomic.AtomicInteger;
-import javax.annotation.Nullable;
-import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.spark.translation.Dataset;
-import org.apache.beam.runners.spark.translation.WindowingHelpers;
-import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.util.WindowedValue;
 import org.apache.spark.api.java.JavaRDD;
 import org.apache.spark.streaming.api.java.JavaDStream;
-import org.apache.spark.streaming.api.java.JavaStreamingContext;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -44,14 +34,8 @@ import org.slf4j.LoggerFactory;
 public class UnboundedDataset<T> implements Dataset {
 
   private static final Logger LOG = LoggerFactory.getLogger(UnboundedDataset.class);
-  private static final AtomicInteger queuedStreamIds = new AtomicInteger();
 
-  // only set if creating a DStream from a static collection
-  @Nullable private transient JavaStreamingContext jssc;
-
-  private Iterable<Iterable<T>> values;
-  private Coder<T> coder;
-  private JavaDStream<WindowedValue<T>> dStream;
+  private final JavaDStream<WindowedValue<T>> dStream;
   // points to the input streams that created this UnboundedDataset,
   // should be greater > 1 in case of Flatten for example.
   // when using GlobalWatermarkHolder this information helps to take only the relevant watermarks
@@ -63,41 +47,11 @@ public class UnboundedDataset<T> implements Dataset {
     this.streamSources.addAll(streamSources);
   }
 
-  public UnboundedDataset(Iterable<Iterable<T>> values, JavaStreamingContext jssc, Coder<T> coder) {
-    this.values = values;
-    this.jssc = jssc;
-    this.coder = coder;
-    // QueuedStream will have a negative (decreasing) unique id.
-    this.streamSources.add(queuedStreamIds.decrementAndGet());
-  }
-
-  @VisibleForTesting
-  public static void resetQueuedStreamIds() {
-    queuedStreamIds.set(0);
-  }
-
-  @SuppressWarnings("ConstantConditions")
   JavaDStream<WindowedValue<T>> getDStream() {
-    if (dStream == null) {
-      WindowedValue.ValueOnlyWindowedValueCoder<T> windowCoder =
-          WindowedValue.getValueOnlyCoder(coder);
-      // create the DStream from queue
-      Queue<JavaRDD<WindowedValue<T>>> rddQueue = new LinkedBlockingQueue<>();
-      for (Iterable<T> v : values) {
-        Iterable<WindowedValue<T>> windowedValues =
-            Iterables.transform(v, WindowingHelpers.<T>windowValueFunction());
-        JavaRDD<WindowedValue<T>> rdd = jssc.sc().parallelize(
-            CoderHelpers.toByteArrays(windowedValues, windowCoder)).map(
-            CoderHelpers.fromByteFunction(windowCoder));
-        rddQueue.offer(rdd);
-      }
-      // create DStream from queue, one at a time.
-      dStream = jssc.queueStream(rddQueue, true);
-    }
     return dStream;
   }
 
-  public List<Integer> getStreamSources() {
+  List<Integer> getStreamSources() {
     return streamSources;
   }
 


[07/23] beam git commit: Remove streaming tests that were needed before supporting the model.

Posted by am...@apache.org.
Remove streaming tests that were needed before supporting the model.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/c25a02f4
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/c25a02f4
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/c25a02f4

Branch: refs/heads/master
Commit: c25a02f459a30de5b15bb404045258e486a94266
Parents: 96d373f
Author: Sela <an...@paypal.com>
Authored: Sat Feb 18 22:06:51 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:17:59 2017 +0200

----------------------------------------------------------------------
 .../streaming/EmptyStreamAssertionTest.java     |  87 ------
 .../streaming/FlattenStreamingTest.java         |  82 ------
 .../streaming/KafkaStreamingTest.java           | 270 -------------------
 .../streaming/SimpleStreamingWordCountTest.java |  84 ------
 .../utils/KafkaWriteOnBatchCompleted.java       | 105 --------
 .../streaming/utils/PAssertStreaming.java       | 121 ---------
 6 files changed, 749 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/c25a02f4/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/EmptyStreamAssertionTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/EmptyStreamAssertionTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/EmptyStreamAssertionTest.java
deleted file mode 100644
index e482945..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/EmptyStreamAssertionTest.java
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.translation.streaming;
-
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
-import java.io.Serializable;
-import java.util.Collections;
-import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.apache.beam.runners.spark.aggregators.ClearAggregatorsRule;
-import org.apache.beam.runners.spark.io.CreateStream;
-import org.apache.beam.runners.spark.translation.streaming.utils.PAssertStreaming;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
-import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.coders.StringUtf8Coder;
-import org.apache.beam.sdk.transforms.windowing.FixedWindows;
-import org.apache.beam.sdk.transforms.windowing.Window;
-import org.apache.beam.sdk.values.PCollection;
-import org.joda.time.Duration;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
-
-
-/**
- * Test that {@link PAssertStreaming} can tell if the stream is empty.
- */
-public class EmptyStreamAssertionTest implements Serializable {
-
-  private static final String EXPECTED_ERR =
-      "Success aggregator should be greater than zero.\n"
-          + "Expected: not <0>\n"
-          + "     but: was <0>";
-
-  @Rule
-  public TemporaryFolder checkpointParentDir = new TemporaryFolder();
-
-  @Rule
-  public SparkTestPipelineOptionsForStreaming commonOptions =
-      new SparkTestPipelineOptionsForStreaming();
-
-  @Rule
-  public ClearAggregatorsRule clearAggregatorsRule = new ClearAggregatorsRule();
-
-  @Test
-  public void testAssertion() throws Exception {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    options.setStreaming(true);
-
-    Duration windowDuration = new Duration(options.getBatchIntervalMillis());
-
-    Pipeline pipeline = Pipeline.create(options);
-
-    PCollection<String> output =
-        pipeline
-            .apply(CreateStream.fromQueue(Collections.<Iterable<String>>emptyList()))
-            .setCoder(StringUtf8Coder.of())
-            .apply(Window.<String>into(FixedWindows.of(windowDuration)));
-
-    try {
-      PAssertStreaming.runAndAssertContents(pipeline, output, new String[0],
-          Duration.standardSeconds(1L));
-    } catch (AssertionError e) {
-      assertTrue("Expected error message: " + EXPECTED_ERR + " but got: " + e.getMessage(),
-          e.getMessage().equals(EXPECTED_ERR));
-      return;
-    }
-    fail("assertion should have failed");
-    throw new RuntimeException("unreachable");
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/c25a02f4/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/FlattenStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/FlattenStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/FlattenStreamingTest.java
deleted file mode 100644
index fc40bbd..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/FlattenStreamingTest.java
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.translation.streaming;
-
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.apache.beam.runners.spark.io.CreateStream;
-import org.apache.beam.runners.spark.translation.streaming.utils.PAssertStreaming;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
-import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.coders.StringUtf8Coder;
-import org.apache.beam.sdk.transforms.Flatten;
-import org.apache.beam.sdk.transforms.windowing.FixedWindows;
-import org.apache.beam.sdk.transforms.windowing.Window;
-import org.apache.beam.sdk.values.PCollection;
-import org.apache.beam.sdk.values.PCollectionList;
-import org.joda.time.Duration;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
-
-/**
- * Test Flatten (union) implementation for streaming.
- */
-public class FlattenStreamingTest {
-
-  private static final String[] WORDS_ARRAY_1 = {
-      "one", "two", "three", "four"};
-  private static final List<Iterable<String>> WORDS_QUEUE_1 =
-      Collections.<Iterable<String>>singletonList(Arrays.asList(WORDS_ARRAY_1));
-  private static final String[] WORDS_ARRAY_2 = {
-          "five", "six", "seven", "eight"};
-  private static final List<Iterable<String>> WORDS_QUEUE_2 =
-          Collections.<Iterable<String>>singletonList(Arrays.asList(WORDS_ARRAY_2));
-  private static final String[] EXPECTED_UNION = {
-          "one", "two", "three", "four", "five", "six", "seven", "eight"};
-
-  @Rule
-  public TemporaryFolder checkpointParentDir = new TemporaryFolder();
-
-  @Rule
-  public SparkTestPipelineOptionsForStreaming commonOptions =
-      new SparkTestPipelineOptionsForStreaming();
-
-  @Test
-  public void testFlattenUnbounded() throws Exception {
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    options.setStreaming(true);
-
-    Pipeline p = Pipeline.create(options);
-    PCollection<String> w1 =
-        p.apply(CreateStream.fromQueue(WORDS_QUEUE_1)).setCoder(StringUtf8Coder.of());
-    PCollection<String> windowedW1 =
-        w1.apply(Window.<String>into(FixedWindows.of(Duration.standardSeconds(1))));
-    PCollection<String> w2 =
-        p.apply(CreateStream.fromQueue(WORDS_QUEUE_2)).setCoder(StringUtf8Coder.of());
-    PCollection<String> windowedW2 =
-        w2.apply(Window.<String>into(FixedWindows.of(Duration.standardSeconds(1))));
-    PCollectionList<String> list = PCollectionList.of(windowedW1).and(windowedW2);
-    PCollection<String> union = list.apply(Flatten.<String>pCollections());
-
-    PAssertStreaming.runAndAssertContents(p, union, EXPECTED_UNION, Duration.standardSeconds(1L));
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/c25a02f4/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/KafkaStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/KafkaStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/KafkaStreamingTest.java
deleted file mode 100644
index 404cb5d..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/KafkaStreamingTest.java
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.translation.streaming;
-
-import com.fasterxml.jackson.annotation.JsonCreator;
-import com.google.common.collect.ImmutableMap;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.ObjectStreamException;
-import java.io.OutputStream;
-import java.io.Serializable;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Map;
-import java.util.Properties;
-import org.apache.beam.runners.spark.SparkContextOptions;
-import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.apache.beam.runners.spark.translation.streaming.utils.EmbeddedKafkaCluster;
-import org.apache.beam.runners.spark.translation.streaming.utils.KafkaWriteOnBatchCompleted;
-import org.apache.beam.runners.spark.translation.streaming.utils.PAssertStreaming;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
-import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.coders.Coder;
-import org.apache.beam.sdk.coders.CoderException;
-import org.apache.beam.sdk.coders.CustomCoder;
-import org.apache.beam.sdk.coders.KvCoder;
-import org.apache.beam.sdk.coders.StringUtf8Coder;
-import org.apache.beam.sdk.io.kafka.KafkaIO;
-import org.apache.beam.sdk.transforms.Distinct;
-import org.apache.beam.sdk.transforms.DoFn;
-import org.apache.beam.sdk.transforms.ParDo;
-import org.apache.beam.sdk.transforms.windowing.FixedWindows;
-import org.apache.beam.sdk.transforms.windowing.Window;
-import org.apache.beam.sdk.values.KV;
-import org.apache.beam.sdk.values.PCollection;
-import org.apache.kafka.clients.producer.KafkaProducer;
-import org.apache.kafka.clients.producer.ProducerRecord;
-import org.apache.kafka.common.serialization.Serializer;
-import org.apache.kafka.common.serialization.StringSerializer;
-import org.apache.spark.streaming.api.java.JavaStreamingListener;
-import org.joda.time.Duration;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
-
-
-/**
- * Test Kafka as input.
- */
-public class KafkaStreamingTest {
-  private static final EmbeddedKafkaCluster.EmbeddedZookeeper EMBEDDED_ZOOKEEPER =
-      new EmbeddedKafkaCluster.EmbeddedZookeeper();
-  private static final EmbeddedKafkaCluster EMBEDDED_KAFKA_CLUSTER =
-      new EmbeddedKafkaCluster(EMBEDDED_ZOOKEEPER.getConnection());
-
-  @BeforeClass
-  public static void init() throws IOException {
-    EMBEDDED_ZOOKEEPER.startup();
-    EMBEDDED_KAFKA_CLUSTER.startup();
-  }
-
-  @Rule
-  public TemporaryFolder checkpointParentDir = new TemporaryFolder();
-
-  @Rule
-  public SparkTestPipelineOptionsForStreaming commonOptions =
-      new SparkTestPipelineOptionsForStreaming();
-
-  @Test
-  public void testEarliest2Topics() throws Exception {
-    Duration batchIntervalDuration = Duration.standardSeconds(5);
-    SparkPipelineOptions options = commonOptions.withTmpCheckpointDir(checkpointParentDir);
-    // provide a generous enough batch-interval to have everything fit in one micro-batch.
-    options.setBatchIntervalMillis(batchIntervalDuration.getMillis());
-    // provide a very generous read time bound, we rely on num records bound here.
-    options.setMinReadTimeMillis(batchIntervalDuration.minus(1).getMillis());
-    // bound the read on the number of messages - 2 topics of 4 messages each.
-    options.setMaxRecordsPerBatch(8L);
-
-    //--- setup
-    // two topics.
-    final String topic1 = "topic1";
-    final String topic2 = "topic2";
-    // messages.
-    final Map<String, String> messages = ImmutableMap.of(
-        "k1", "v1", "k2", "v2", "k3", "v3", "k4", "v4"
-    );
-    // expected.
-    final String[] expected = {"k1,v1", "k2,v2", "k3,v3", "k4,v4"};
-
-    // write to both topics ahead.
-    produce(topic1, messages);
-    produce(topic2, messages);
-
-    //------- test: read and dedup.
-    Pipeline p = Pipeline.create(options);
-
-    Map<String, Object> consumerProps = ImmutableMap.<String, Object>of(
-        "auto.offset.reset", "earliest"
-    );
-
-    KafkaIO.Read<String, String> read = KafkaIO.<String, String>read()
-        .withBootstrapServers(EMBEDDED_KAFKA_CLUSTER.getBrokerList())
-        .withTopics(Arrays.asList(topic1, topic2))
-        .withKeyCoder(StringUtf8Coder.of())
-        .withValueCoder(StringUtf8Coder.of())
-        .updateConsumerProperties(consumerProps);
-
-    PCollection<String> deduped =
-        p.apply(read.withoutMetadata()).setCoder(
-            KvCoder.of(StringUtf8Coder.of(), StringUtf8Coder.of()))
-        .apply(Window.<KV<String, String>>into(FixedWindows.of(batchIntervalDuration)))
-        .apply(ParDo.of(new FormatKVFn()))
-        .apply(Distinct.<String>create());
-
-    // graceful shutdown will make sure first batch (at least) will finish.
-    Duration timeout = Duration.standardSeconds(1L);
-    PAssertStreaming.runAndAssertContents(p, deduped, expected, timeout);
-  }
-
-  @Test
-  public void testLatest() throws Exception {
-    Duration batchIntervalDuration = Duration.standardSeconds(5);
-    SparkContextOptions options =
-        commonOptions.withTmpCheckpointDir(checkpointParentDir).as(SparkContextOptions.class);
-    // provide a generous enough batch-interval to have everything fit in one micro-batch.
-    options.setBatchIntervalMillis(batchIntervalDuration.getMillis());
-    // provide a very generous read time bound, we rely on num records bound here.
-    options.setMinReadTimeMillis(batchIntervalDuration.minus(1).getMillis());
-    // bound the read on the number of messages - 1 topics of 4 messages.
-    options.setMaxRecordsPerBatch(4L);
-
-    //--- setup
-    final String topic = "topic";
-    // messages.
-    final Map<String, String> messages = ImmutableMap.of(
-        "k1", "v1", "k2", "v2", "k3", "v3", "k4", "v4"
-    );
-    // expected.
-    final String[] expected = {"k1,v1", "k2,v2", "k3,v3", "k4,v4"};
-
-    // write once first batch completes, this will guarantee latest-like behaviour.
-    options.setListeners(Collections.<JavaStreamingListener>singletonList(
-        KafkaWriteOnBatchCompleted.once(messages, Collections.singletonList(topic),
-            EMBEDDED_KAFKA_CLUSTER.getProps(), EMBEDDED_KAFKA_CLUSTER.getBrokerList())));
-
-    //------- test: read and format.
-    Pipeline p = Pipeline.create(options);
-
-    Map<String, Object> consumerProps = ImmutableMap.<String, Object>of(
-        "auto.offset.reset", "latest"
-    );
-
-    KafkaIO.Read<String, String> read = KafkaIO.<String, String>read()
-        .withBootstrapServers(EMBEDDED_KAFKA_CLUSTER.getBrokerList())
-        .withTopics(Collections.singletonList(topic))
-        .withKeyCoder(StringUtf8Coder.of())
-        .withValueCoder(NonKryoSerializableStringCoder.of())
-        .updateConsumerProperties(consumerProps);
-
-    PCollection<String> formatted =
-        p.apply(read.withoutMetadata()).setCoder(
-            KvCoder.of(StringUtf8Coder.of(), StringUtf8Coder.of()))
-        .apply(Window.<KV<String, String>>into(FixedWindows.of(batchIntervalDuration)))
-        .apply(ParDo.of(new FormatKVFn()));
-
-    // run for more than 1 batch interval, so that reading of latest is attempted in the
-    // first batch with no luck, while the OnBatchCompleted injected-input afterwards will be read
-    // in the second interval.
-    PAssertStreaming.runAndAssertContents(p, formatted, expected, Duration.standardSeconds(3));
-  }
-
-  private static void produce(String topic, Map<String, String> messages) {
-    Serializer<String> stringSerializer = new StringSerializer();
-    try (@SuppressWarnings("unchecked") KafkaProducer<String, String> kafkaProducer =
-        new KafkaProducer(defaultProducerProps(), stringSerializer, stringSerializer)) {
-          // feed topic.
-          for (Map.Entry<String, String> en : messages.entrySet()) {
-            kafkaProducer.send(new ProducerRecord<>(topic, en.getKey(), en.getValue()));
-          }
-          // await send completion.
-          kafkaProducer.flush();
-        }
-  }
-
-  private static Properties defaultProducerProps() {
-    Properties producerProps = new Properties();
-    producerProps.putAll(EMBEDDED_KAFKA_CLUSTER.getProps());
-    producerProps.put("acks", "1");
-    producerProps.put("bootstrap.servers", EMBEDDED_KAFKA_CLUSTER.getBrokerList());
-    return producerProps;
-  }
-
-  @AfterClass
-  public static void tearDown() {
-    EMBEDDED_KAFKA_CLUSTER.shutdown();
-    EMBEDDED_ZOOKEEPER.shutdown();
-  }
-
-  private static class FormatKVFn extends DoFn<KV<String, String>, String> {
-    @ProcessElement
-    public void processElement(ProcessContext c) {
-      c.output(c.element().getKey() + "," + c.element().getValue());
-    }
-  }
-
-  /**
-   * This coder is not Kryo serializable, used to make sure
-   * {@link org.apache.beam.runners.spark.coders.BeamSparkRunnerRegistrator} registers needed
-   * classes to ensure Java serialization is used instead.
-   */
-  private static class NonKryoSerializableStringCoder extends CustomCoder<String>
-      implements Serializable {
-    private Coder<String> stringCoder;
-    private Boolean isSerialized = false;
-
-    private NonKryoSerializableStringCoder() {
-    }
-
-    @JsonCreator
-    public static NonKryoSerializableStringCoder of() {
-      return new NonKryoSerializableStringCoder();
-    }
-
-    private Object readResolve() throws ObjectStreamException {
-      NonKryoSerializableStringCoder deserialized = new NonKryoSerializableStringCoder();
-      deserialized.stringCoder = StringUtf8Coder.of();
-      deserialized.isSerialized = true;
-      return deserialized;
-    }
-
-    private Object writeReplace() throws ObjectStreamException {
-      return new NonKryoSerializableStringCoder();
-    }
-
-    @Override
-    public void encode(String value, OutputStream outStream, Context context)
-        throws CoderException, IOException {
-      if (!isSerialized) {
-        this.stringCoder = StringUtf8Coder.of();
-      }
-      stringCoder.encode(value, outStream, context);
-    }
-
-    @Override
-    public String decode(InputStream inStream, Context context) throws CoderException, IOException {
-      if (!isSerialized) {
-        this.stringCoder = StringUtf8Coder.of();
-      }
-      return stringCoder.decode(inStream, context);
-    }
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/c25a02f4/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/SimpleStreamingWordCountTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/SimpleStreamingWordCountTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/SimpleStreamingWordCountTest.java
deleted file mode 100644
index 3734cf6..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/SimpleStreamingWordCountTest.java
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.translation.streaming;
-
-import com.google.common.collect.Lists;
-import java.io.Serializable;
-import java.util.Arrays;
-import java.util.List;
-import org.apache.beam.runners.spark.SparkPipelineOptions;
-import org.apache.beam.runners.spark.examples.WordCount;
-import org.apache.beam.runners.spark.io.CreateStream;
-import org.apache.beam.runners.spark.translation.streaming.utils.PAssertStreaming;
-import org.apache.beam.runners.spark.translation.streaming.utils.SparkTestPipelineOptionsForStreaming;
-import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.coders.StringUtf8Coder;
-import org.apache.beam.sdk.transforms.MapElements;
-import org.apache.beam.sdk.transforms.windowing.FixedWindows;
-import org.apache.beam.sdk.transforms.windowing.Window;
-import org.apache.beam.sdk.values.PCollection;
-import org.joda.time.Duration;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
-
-
-/**
- * Simple word count streaming test.
- */
-public class SimpleStreamingWordCountTest implements Serializable {
-
-  @Rule
-  public TemporaryFolder checkpointParentDir = new TemporaryFolder();
-
-  @Rule
-  public SparkTestPipelineOptionsForStreaming pipelineOptions =
-      new SparkTestPipelineOptionsForStreaming();
-
-  private static final String[] WORDS = {"hi there", "hi", "hi sue bob", "hi sue", "", "bob hi"};
-
-  private static final List<Iterable<String>> MANY_WORDS =
-      Lists.<Iterable<String>>newArrayList(Arrays.asList(WORDS), Arrays.asList(WORDS));
-
-  private static final String[] EXPECTED_WORD_COUNTS = {"hi: 10", "there: 2", "sue: 4", "bob: 4"};
-
-  private static final Duration BATCH_INTERVAL = Duration.standardSeconds(1);
-
-  private static final Duration windowDuration = BATCH_INTERVAL.multipliedBy(2);
-
-  @Test
-  public void testFixedWindows() throws Exception {
-    SparkPipelineOptions options = pipelineOptions.withTmpCheckpointDir(checkpointParentDir);
-    options.setStreaming(true);
-
-    // override defaults
-    options.setBatchIntervalMillis(BATCH_INTERVAL.getMillis());
-
-    Pipeline pipeline = Pipeline.create(options);
-
-    PCollection<String> output =
-        pipeline
-            .apply(CreateStream.fromQueue(MANY_WORDS))
-            .setCoder(StringUtf8Coder.of())
-            .apply(Window.<String>into(FixedWindows.of(windowDuration)))
-            .apply(new WordCount.CountWords())
-            .apply(MapElements.via(new WordCount.FormatAsTextFn()));
-
-    PAssertStreaming.runAndAssertContents(pipeline, output, EXPECTED_WORD_COUNTS, windowDuration);
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/c25a02f4/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/KafkaWriteOnBatchCompleted.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/KafkaWriteOnBatchCompleted.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/KafkaWriteOnBatchCompleted.java
deleted file mode 100644
index 38a5bff..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/KafkaWriteOnBatchCompleted.java
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.translation.streaming.utils;
-
-import java.util.List;
-import java.util.Map;
-import java.util.Properties;
-import org.apache.kafka.clients.producer.KafkaProducer;
-import org.apache.kafka.clients.producer.ProducerRecord;
-import org.apache.kafka.common.serialization.Serializer;
-import org.apache.kafka.common.serialization.StringSerializer;
-import org.apache.spark.streaming.api.java.JavaStreamingListener;
-import org.apache.spark.streaming.api.java.JavaStreamingListenerBatchCompleted;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-
-/**
- * Write to Kafka once the OnBatchCompleted hook is activated.
- */
-public class KafkaWriteOnBatchCompleted extends JavaStreamingListener{
-  private static final Logger LOG = LoggerFactory.getLogger(KafkaWriteOnBatchCompleted.class);
-
-  private final Map<String, String> messages;
-  private final List<String> topics;
-  private final Properties producerProps;
-  private final String brokerList;
-  private final boolean once;
-
-  // A flag to state that no more writes should happen.
-  private boolean done = false;
-
-  private KafkaWriteOnBatchCompleted(Map<String, String> messages,
-                                     List<String> topics,
-                                     Properties producerProps,
-                                     String brokerList,
-                                     boolean once) {
-    this.messages = messages;
-    this.topics = topics;
-    this.producerProps = producerProps;
-    this.brokerList = brokerList;
-    this.once = once;
-  }
-
-  public static KafkaWriteOnBatchCompleted once(Map<String, String> messages,
-                                                List<String> topics,
-                                                Properties producerProps,
-                                                String brokerList) {
-    return new KafkaWriteOnBatchCompleted(messages, topics, producerProps, brokerList, true);
-  }
-
-  public static KafkaWriteOnBatchCompleted always(Map<String, String> messages,
-                                                  List<String> topics,
-                                                  Properties producerProps,
-                                                  String brokerList) {
-    return new KafkaWriteOnBatchCompleted(messages, topics, producerProps, brokerList, false);
-  }
-
-  @Override
-  public void onBatchCompleted(JavaStreamingListenerBatchCompleted batchCompleted) {
-    super.onBatchCompleted(batchCompleted);
-    if (!done) {
-      LOG.info("Writing to Kafka after batchTime {} has completed.",
-          batchCompleted.batchInfo().batchTime());
-      write();
-      // once runs once.
-      if (once) {
-        done = true;
-      }
-    }
-  }
-
-  private void write() {
-    Properties props = new Properties();
-    props.putAll(producerProps);
-    props.put("acks", "1");
-    props.put("bootstrap.servers", brokerList);
-    Serializer<String> stringSerializer = new StringSerializer();
-    try (@SuppressWarnings("unchecked") KafkaProducer<String, String> kafkaProducer =
-        new KafkaProducer(props, stringSerializer, stringSerializer)) {
-          for (String topic: topics) {
-            for (Map.Entry<String, String> en : messages.entrySet()) {
-              kafkaProducer.send(new ProducerRecord<>(topic, en.getKey(), en.getValue()));
-            }
-            // await send completion.
-            kafkaProducer.flush();
-          }
-        }
-  }
-}

http://git-wip-us.apache.org/repos/asf/beam/blob/c25a02f4/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/PAssertStreaming.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/PAssertStreaming.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/PAssertStreaming.java
deleted file mode 100644
index cd9de92..0000000
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/utils/PAssertStreaming.java
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.runners.spark.translation.streaming.utils;
-
-import static org.hamcrest.Matchers.containsInAnyOrder;
-import static org.hamcrest.Matchers.is;
-import static org.hamcrest.Matchers.not;
-import static org.junit.Assert.assertThat;
-
-import java.io.Serializable;
-import org.apache.beam.runners.spark.SparkPipelineResult;
-import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.testing.PAssert;
-import org.apache.beam.sdk.transforms.Aggregator;
-import org.apache.beam.sdk.transforms.DoFn;
-import org.apache.beam.sdk.transforms.GroupByKey;
-import org.apache.beam.sdk.transforms.ParDo;
-import org.apache.beam.sdk.transforms.Sum;
-import org.apache.beam.sdk.transforms.Values;
-import org.apache.beam.sdk.transforms.WithKeys;
-import org.apache.beam.sdk.values.PCollection;
-import org.joda.time.Duration;
-import org.junit.Assert;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-
-/**
- * Since PAssert doesn't propagate assert exceptions, use Aggregators to assert streaming
- * success/failure counters.
- */
-public final class PAssertStreaming implements Serializable {
-  private static final Logger LOG = LoggerFactory.getLogger(PAssertStreaming.class);
-
-  private PAssertStreaming() {
-  }
-
-  /**
-   * Adds a pipeline run-time assertion that the contents of {@code actual} are {@code expected}.
-   * Note that it is oblivious to windowing, so the assertion will apply indiscriminately to all
-   * windows.
-   */
-  public static <T> SparkPipelineResult runAndAssertContents(
-      Pipeline p,
-      PCollection<T> actual,
-      T[] expected,
-      Duration timeout,
-      boolean stopGracefully) {
-    // Because PAssert does not support non-global windowing, but all our data is in one window,
-    // we set up the assertion directly.
-    actual
-        .apply(WithKeys.<String, T>of("dummy"))
-        .apply(GroupByKey.<String, T>create())
-        .apply(Values.<Iterable<T>>create())
-        .apply(ParDo.of(new AssertDoFn<>(expected)));
-
-    // run the pipeline.
-    SparkPipelineResult res = (SparkPipelineResult) p.run();
-    res.waitUntilFinish(timeout);
-    // validate assertion succeeded (at least once).
-    int success = res.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
-    Assert.assertThat("Success aggregator should be greater than zero.", success, not(0));
-    // validate assertion didn't fail.
-    int failure = res.getAggregatorValue(PAssert.FAILURE_COUNTER, Integer.class);
-    Assert.assertThat("Failure aggregator should be zero.", failure, is(0));
-
-    LOG.info("PAssertStreaming had {} successful assertion and {} failed.", success, failure);
-    return res;
-  }
-
-  /**
-   * Default to stop gracefully so that tests will finish processing even if slower for reasons
-   * such as a slow runtime environment.
-   */
-  public static <T> SparkPipelineResult runAndAssertContents(
-      Pipeline p,
-      PCollection<T> actual,
-      T[] expected,
-      Duration timeout) {
-    return runAndAssertContents(p, actual, expected, timeout, true);
-  }
-
-  private static class AssertDoFn<T> extends DoFn<Iterable<T>, Void> {
-    private final Aggregator<Integer, Integer> success =
-        createAggregator(PAssert.SUCCESS_COUNTER, Sum.ofIntegers());
-    private final Aggregator<Integer, Integer> failure =
-        createAggregator(PAssert.FAILURE_COUNTER, Sum.ofIntegers());
-    private final T[] expected;
-
-    AssertDoFn(T[] expected) {
-      this.expected = expected;
-    }
-
-    @ProcessElement
-    public void processElement(ProcessContext c) throws Exception {
-      try {
-        assertThat(c.element(), containsInAnyOrder(expected));
-        success.addValue(1);
-      } catch (Throwable t) {
-        failure.addValue(1);
-        LOG.error("PAssert failed expectations.", t);
-        // don't throw t because it will fail this bundle and the failure count will be lost.
-      }
-    }
-  }
-}


[21/23] beam git commit: Spark GABWVOB to use UnsupportedSideInputReader.

Posted by am...@apache.org.
Spark GABWVOB to use UnsupportedSideInputReader.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/3c94ff20
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/3c94ff20
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/3c94ff20

Branch: refs/heads/master
Commit: 3c94ff2069bada1ae7194879d96b5e8f12207101
Parents: 62ddca6
Author: Sela <an...@paypal.com>
Authored: Tue Feb 28 14:53:23 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:10 2017 +0200

----------------------------------------------------------------------
 ...SparkGroupAlsoByWindowViaOutputBufferFn.java | 23 ++------------------
 1 file changed, 2 insertions(+), 21 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/3c94ff20/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java
index 449e3b6..2b16c60 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGroupAlsoByWindowViaOutputBufferFn.java
@@ -30,6 +30,7 @@ import org.apache.beam.runners.core.StateInternals;
 import org.apache.beam.runners.core.StateInternalsFactory;
 import org.apache.beam.runners.core.SystemReduceFn;
 import org.apache.beam.runners.core.TimerInternals;
+import org.apache.beam.runners.core.UnsupportedSideInputReader;
 import org.apache.beam.runners.core.triggers.ExecutableTriggerStateMachine;
 import org.apache.beam.runners.core.triggers.TriggerStateMachines;
 import org.apache.beam.runners.spark.aggregators.NamedAggregators;
@@ -38,11 +39,9 @@ import org.apache.beam.sdk.transforms.Sum;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.transforms.windowing.PaneInfo;
 import org.apache.beam.sdk.transforms.windowing.Triggers;
-import org.apache.beam.sdk.util.SideInputReader;
 import org.apache.beam.sdk.util.WindowedValue;
 import org.apache.beam.sdk.util.WindowingStrategy;
 import org.apache.beam.sdk.values.KV;
-import org.apache.beam.sdk.values.PCollectionView;
 import org.apache.beam.sdk.values.TupleTag;
 import org.apache.spark.Accumulator;
 import org.apache.spark.api.java.function.FlatMapFunction;
@@ -107,25 +106,7 @@ public class SparkGroupAlsoByWindowViaOutputBufferFn<K, InputT, W extends Bounde
             stateInternals,
             timerInternals,
             outputter,
-            new SideInputReader() {
-              @Override
-              public <T> T get(PCollectionView<T> view, BoundedWindow sideInputWindow) {
-                throw new UnsupportedOperationException(
-                    "GroupAlsoByWindow must not have side inputs");
-              }
-
-              @Override
-              public <T> boolean contains(PCollectionView<T> view) {
-                throw new UnsupportedOperationException(
-                    "GroupAlsoByWindow must not have side inputs");
-              }
-
-              @Override
-              public boolean isEmpty() {
-                throw new UnsupportedOperationException(
-                    "GroupAlsoByWindow must not have side inputs");
-              }
-            },
+            new UnsupportedSideInputReader("GroupAlsoByWindow"),
             droppedDueToClosedWindow,
             reduceFn,
             runtimeContext.getPipelineOptions());


[17/23] beam git commit: Build trigger state machine from Runner API Trigger proto directly

Posted by am...@apache.org.
Build trigger state machine from Runner API Trigger proto directly

Remove printouts of stage progress in tests.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/bd41d9a3
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/bd41d9a3
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/bd41d9a3

Branch: refs/heads/master
Commit: bd41d9a323b23bf2956a34b9f42eaba4857caed7
Parents: c08e7d8
Author: Sela <an...@paypal.com>
Authored: Sat Feb 25 01:21:28 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:06 2017 +0200

----------------------------------------------------------------------
 runners/spark/pom.xml                                             | 2 ++
 .../spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java        | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/bd41d9a3/runners/spark/pom.xml
----------------------------------------------------------------------
diff --git a/runners/spark/pom.xml b/runners/spark/pom.xml
index 1669833..f926bf5 100644
--- a/runners/spark/pom.xml
+++ b/runners/spark/pom.xml
@@ -97,6 +97,7 @@
                     </beamTestPipelineOptions>
                     <beam.spark.test.reuseSparkContext>true</beam.spark.test.reuseSparkContext>
                     <spark.ui.enabled>false</spark.ui.enabled>
+                    <spark.ui.showConsoleProgress>false</spark.ui.showConsoleProgress>
                   </systemPropertyVariables>
                 </configuration>
               </execution>
@@ -339,6 +340,7 @@
             <systemPropertyVariables>
               <beam.spark.test.reuseSparkContext>true</beam.spark.test.reuseSparkContext>
               <spark.ui.enabled>false</spark.ui.enabled>
+              <spark.ui.showConsoleProgress>false</spark.ui.showConsoleProgress>
             </systemPropertyVariables>
           </configuration>
         </plugin>

http://git-wip-us.apache.org/repos/asf/beam/blob/bd41d9a3/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
index 5589d82..24b8508 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.java
@@ -47,6 +47,7 @@ import org.apache.beam.sdk.transforms.Combine;
 import org.apache.beam.sdk.transforms.Sum;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.transforms.windowing.PaneInfo;
+import org.apache.beam.sdk.transforms.windowing.Triggers;
 import org.apache.beam.sdk.util.WindowedValue;
 import org.apache.beam.sdk.util.WindowedValue.FullWindowedValueCoder;
 import org.apache.beam.sdk.util.WindowingStrategy;
@@ -231,7 +232,7 @@ public class SparkGroupAlsoByWindowViaWindowSet {
                               windowingStrategy,
                               ExecutableTriggerStateMachine.create(
                                   TriggerStateMachines.stateMachineForTrigger(
-                                      windowingStrategy.getTrigger())),
+                                      Triggers.toProto(windowingStrategy.getTrigger()))),
                               stateInternals,
                               timerInternals,
                               outputHolder,


[14/23] beam git commit: Batch executions should block without timeout.

Posted by am...@apache.org.
Batch executions should block without timeout.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/3867dcd7
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/3867dcd7
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/3867dcd7

Branch: refs/heads/master
Commit: 3867dcd793adcb030faa4713624542210b86b68d
Parents: f47e0eb
Author: Sela <an...@paypal.com>
Authored: Mon Feb 20 20:40:18 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:05 2017 +0200

----------------------------------------------------------------------
 .../apache/beam/runners/spark/TestSparkRunner.java  | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/3867dcd7/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
index 985f75d..d2b5186 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/TestSparkRunner.java
@@ -116,7 +116,6 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
   @Override
   public SparkPipelineResult run(Pipeline pipeline) {
     SparkPipelineOptions sparkOptions = pipeline.getOptions().as(SparkPipelineOptions.class);
-    long timeout = sparkOptions.getForcedTimeout();
     SparkPipelineResult result = null;
     try {
       // clear state of Aggregators, Metrics and Watermarks.
@@ -126,14 +125,12 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
 
       TestPipelineOptions testPipelineOptions = pipeline.getOptions().as(TestPipelineOptions.class);
       LOG.info("About to run test pipeline " + sparkOptions.getJobName());
-      result = delegate.run(pipeline);
-      result.waitUntilFinish(Duration.millis(timeout));
-
-      assertThat(result, testPipelineOptions.getOnCreateMatcher());
-      assertThat(result, testPipelineOptions.getOnSuccessMatcher());
 
       // if the pipeline was executed in streaming mode, validate aggregators.
       if (isForceStreaming) {
+        result = delegate.run(pipeline);
+        long timeout = sparkOptions.getForcedTimeout();
+        result.waitUntilFinish(Duration.millis(timeout));
         // validate assertion succeeded (at least once).
         int successAssertions = result.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
         assertThat(
@@ -154,6 +151,13 @@ public final class TestSparkRunner extends PipelineRunner<SparkPipelineResult> {
                 "Successfully asserted pipeline %s with %d successful assertions.",
                 sparkOptions.getJobName(),
                 successAssertions));
+      } else {
+        // for batch test pipelines, run and block until done.
+        result = delegate.run(pipeline);
+        result.waitUntilFinish();
+        // assert via matchers.
+        assertThat(result, testPipelineOptions.getOnCreateMatcher());
+        assertThat(result, testPipelineOptions.getOnSuccessMatcher());
       }
     } finally {
       try {


[23/23] beam git commit: This closes #2050

Posted by am...@apache.org.
This closes #2050


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/61e31e62
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/61e31e62
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/61e31e62

Branch: refs/heads/master
Commit: 61e31e622ec5b1f3c4cd1417c859810689f2683c
Parents: a41afdc 2c70743
Author: Sela <an...@paypal.com>
Authored: Wed Mar 1 00:18:45 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:45 2017 +0200

----------------------------------------------------------------------
 .../apache/beam/runners/core/LateDataUtils.java |  88 ++++
 .../core/UnsupportedSideInputReader.java        |  52 +++
 runners/spark/pom.xml                           |   5 +-
 .../runners/spark/SparkPipelineOptions.java     |   6 +-
 .../beam/runners/spark/SparkPipelineResult.java |   4 +
 .../apache/beam/runners/spark/SparkRunner.java  |   8 +-
 .../runners/spark/TestSparkPipelineOptions.java |  35 ++
 .../beam/runners/spark/TestSparkRunner.java     |  88 ++--
 .../aggregators/AggregatorsAccumulator.java     |   2 +-
 .../beam/runners/spark/coders/CoderHelpers.java |  23 +
 .../apache/beam/runners/spark/io/ConsoleIO.java |   4 +-
 .../beam/runners/spark/io/CreateStream.java     | 198 +++++++--
 .../spark/metrics/MetricsAccumulator.java       |   4 -
 .../spark/metrics/SparkMetricsContainer.java    |   5 +-
 .../SparkGroupAlsoByWindowViaWindowSet.java     | 431 +++++++++++++++++++
 .../spark/stateful/SparkStateInternals.java     | 418 ++++++++++++++++++
 .../spark/stateful/SparkTimerInternals.java     | 185 ++++++++
 .../spark/translation/EvaluationContext.java    |   6 -
 .../translation/GroupCombineFunctions.java      | 237 ++++------
 .../translation/SparkGroupAlsoByWindowFn.java   | 198 ---------
 ...SparkGroupAlsoByWindowViaOutputBufferFn.java | 179 ++++++++
 .../spark/translation/TransformTranslator.java  | 238 ++++++----
 .../spark/translation/TranslationUtils.java     |  24 +-
 .../streaming/StreamingTransformTranslator.java | 277 +++++-------
 .../translation/streaming/UnboundedDataset.java |  59 +--
 .../beam/runners/spark/ForceStreamingTest.java  |  17 +-
 .../spark/GlobalWatermarkHolderTest.java        | 151 +++++++
 .../apache/beam/runners/spark/PipelineRule.java | 120 ++++++
 .../runners/spark/ProvidedSparkContextTest.java |   2 +-
 .../beam/runners/spark/ReuseSparkContext.java   |  46 --
 .../runners/spark/ReuseSparkContextRule.java    |  46 ++
 .../runners/spark/SparkPipelineStateTest.java   |  33 +-
 .../beam/runners/spark/WatermarkTest.java       | 231 ----------
 .../metrics/sink/NamedAggregatorsTest.java      |  11 +-
 .../beam/runners/spark/io/AvroPipelineTest.java |   6 +-
 .../beam/runners/spark/io/NumShardsTest.java    |   6 +-
 .../io/hadoop/HadoopFileFormatPipelineTest.java |   6 +-
 .../spark/translation/StorageLevelTest.java     |   8 +-
 .../translation/streaming/CreateStreamTest.java | 369 ++++++++++++++++
 .../streaming/EmptyStreamAssertionTest.java     |  87 ----
 .../streaming/FlattenStreamingTest.java         |  82 ----
 .../streaming/KafkaStreamingTest.java           | 270 ------------
 .../ResumeFromCheckpointStreamingTest.java      | 292 +++++++++----
 .../streaming/SimpleStreamingWordCountTest.java |  84 ----
 .../streaming/TrackStreamingSourcesTest.java    |  45 +-
 .../utils/KafkaWriteOnBatchCompleted.java       | 105 -----
 .../streaming/utils/PAssertStreaming.java       | 121 ------
 .../utils/SparkTestPipelineOptions.java         |  42 --
 .../SparkTestPipelineOptionsForStreaming.java   |  37 --
 .../windowing/TimestampTransform.java           |   3 +-
 50 files changed, 2971 insertions(+), 2023 deletions(-)
----------------------------------------------------------------------



[12/23] beam git commit: Make TimestampTransform Serializable.

Posted by am...@apache.org.
Make TimestampTransform Serializable.

Rebase leftover fixes.


Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/f47e0eba
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/f47e0eba
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/f47e0eba

Branch: refs/heads/master
Commit: f47e0ebacd4c915e2a8c8b4e18e792926745d673
Parents: 24ab605
Author: Sela <an...@paypal.com>
Authored: Mon Feb 20 19:45:03 2017 +0200
Committer: Sela <an...@paypal.com>
Committed: Wed Mar 1 00:18:04 2017 +0200

----------------------------------------------------------------------
 .../aggregators/AggregatorsAccumulator.java     |  2 +-
 .../spark/metrics/MetricsAccumulator.java       |  4 --
 .../spark/metrics/SparkMetricsContainer.java    |  5 +-
 .../spark/stateful/SparkStateInternals.java     | 16 +++++++
 .../streaming/StreamingTransformTranslator.java |  2 +-
 .../translation/streaming/UnboundedDataset.java |  1 -
 .../ResumeFromCheckpointStreamingTest.java      | 48 ++++++++++++++++++--
 .../windowing/TimestampTransform.java           |  3 +-
 8 files changed, 64 insertions(+), 17 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/runners/spark/src/main/java/org/apache/beam/runners/spark/aggregators/AggregatorsAccumulator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/aggregators/AggregatorsAccumulator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/aggregators/AggregatorsAccumulator.java
index a4dfda6..261c327 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/aggregators/AggregatorsAccumulator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/aggregators/AggregatorsAccumulator.java
@@ -34,7 +34,7 @@ import org.slf4j.LoggerFactory;
 
 
 /**
- * For resilience, {@link Accumulator}s are required to be wrapped in a Singleton.
+ * For resilience, {@link Accumulator Accumulators} are required to be wrapped in a Singleton.
  * @see <a href="https://spark.apache.org/docs/1.6.3/streaming-programming-guide.html#accumulators-and-broadcast-variables">accumulators</a>
  */
 public class AggregatorsAccumulator {

http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/MetricsAccumulator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/MetricsAccumulator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/MetricsAccumulator.java
index f27a826..9d48289 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/MetricsAccumulator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/MetricsAccumulator.java
@@ -53,9 +53,6 @@ public class MetricsAccumulator {
     if (instance == null) {
       synchronized (MetricsAccumulator.class) {
         if (instance == null) {
-          // TODO: currently when recovering from checkpoint, Spark does not recover the
-          // last known Accumulator value. The SparkRunner should be able to persist and recover
-          // the SparkMetricsContainer in order to recover metrics as well.
           SparkMetricsContainer initialValue = new SparkMetricsContainer();
           instance = jsc.sc().accumulator(initialValue, "Beam.Metrics",
               new MetricsAccumulatorParam());
@@ -94,7 +91,6 @@ public class MetricsAccumulator {
     }
   }
 
-  @SuppressWarnings("unused")
   @VisibleForTesting
   static void clear() {
     synchronized (MetricsAccumulator.class) {

http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/SparkMetricsContainer.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/SparkMetricsContainer.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/SparkMetricsContainer.java
index 0bf0e70..7a4b222 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/SparkMetricsContainer.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/metrics/SparkMetricsContainer.java
@@ -145,10 +145,7 @@ public class SparkMetricsContainer implements Serializable {
   @VisibleForTesting
   public static void clear() {
     try {
-      SparkMetricsContainer instance = getInstance();
-      instance.initializeMetricsContainers();
-      instance.counters.clear();
-      instance.distributions.clear();
+      MetricsAccumulator.clear();
     } catch (IllegalStateException ignored) {
     }
   }

http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
index 93b1f63..43fb383 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/stateful/SparkStateInternals.java
@@ -38,7 +38,9 @@ import org.apache.beam.sdk.transforms.windowing.OutputTimeFn;
 import org.apache.beam.sdk.util.CombineFnUtil;
 import org.apache.beam.sdk.util.state.AccumulatorCombiningState;
 import org.apache.beam.sdk.util.state.BagState;
+import org.apache.beam.sdk.util.state.MapState;
 import org.apache.beam.sdk.util.state.ReadableState;
+import org.apache.beam.sdk.util.state.SetState;
 import org.apache.beam.sdk.util.state.State;
 import org.apache.beam.sdk.util.state.StateContext;
 import org.apache.beam.sdk.util.state.StateContexts;
@@ -121,6 +123,20 @@ class SparkStateInternals<K> implements StateInternals<K> {
     }
 
     @Override
+    public <T> SetState<T> bindSet(StateTag<? super K, SetState<T>> spec, Coder<T> elemCoder) {
+      throw new UnsupportedOperationException(
+          String.format("%s is not supported", SetState.class.getSimpleName()));
+    }
+
+    @Override
+    public <KeyT, ValueT> MapState<KeyT, ValueT> bindMap(
+        StateTag<? super K, MapState<KeyT, ValueT>> spec,
+        Coder<KeyT> mapKeyCoder, Coder<ValueT> mapValueCoder) {
+      throw new UnsupportedOperationException(
+          String.format("%s is not supported", MapState.class.getSimpleName()));
+    }
+
+    @Override
     public <InputT, AccumT, OutputT> AccumulatorCombiningState<InputT, AccumT, OutputT>
         bindCombiningValue(
             StateTag<? super K, AccumulatorCombiningState<InputT, AccumT, OutputT>> address,

http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
index a98eff2..fc98781 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/StreamingTransformTranslator.java
@@ -37,9 +37,9 @@ import org.apache.beam.runners.spark.coders.CoderHelpers;
 import org.apache.beam.runners.spark.io.ConsoleIO;
 import org.apache.beam.runners.spark.io.CreateStream;
 import org.apache.beam.runners.spark.io.SparkUnboundedSource;
-import org.apache.beam.runners.spark.stateful.SparkGroupAlsoByWindowViaWindowSet;
 import org.apache.beam.runners.spark.metrics.MetricsAccumulator;
 import org.apache.beam.runners.spark.metrics.SparkMetricsContainer;
+import org.apache.beam.runners.spark.stateful.SparkGroupAlsoByWindowViaWindowSet;
 import org.apache.beam.runners.spark.translation.BoundedDataset;
 import org.apache.beam.runners.spark.translation.Dataset;
 import org.apache.beam.runners.spark.translation.DoFnFunction;

http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
index d7f3f34..e9abe93 100644
--- a/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
+++ b/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/streaming/UnboundedDataset.java
@@ -22,7 +22,6 @@ import java.util.ArrayList;
 import java.util.List;
 import org.apache.beam.runners.spark.translation.Dataset;
 import org.apache.beam.sdk.util.WindowedValue;
-import org.apache.spark.api.java.JavaRDD;
 import org.apache.spark.streaming.api.java.JavaDStream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
----------------------------------------------------------------------
diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
index e307363..4eea383 100644
--- a/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
+++ b/runners/spark/src/test/java/org/apache/beam/runners/spark/translation/streaming/ResumeFromCheckpointStreamingTest.java
@@ -17,15 +17,19 @@
  */
 package org.apache.beam.runners.spark.translation.streaming;
 
+import static org.apache.beam.sdk.metrics.MetricMatchers.attemptedMetricsResult;
 import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.hasItem;
 import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertThat;
 
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.util.concurrent.Uninterruptibles;
 import java.io.IOException;
 import java.util.Collections;
+import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 import java.util.concurrent.TimeUnit;
@@ -33,17 +37,23 @@ import org.apache.beam.runners.spark.ReuseSparkContextRule;
 import org.apache.beam.runners.spark.SparkPipelineOptions;
 import org.apache.beam.runners.spark.SparkPipelineResult;
 import org.apache.beam.runners.spark.SparkRunner;
-import org.apache.beam.runners.spark.aggregators.AccumulatorSingleton;
+import org.apache.beam.runners.spark.aggregators.AggregatorsAccumulator;
 import org.apache.beam.runners.spark.coders.CoderHelpers;
+import org.apache.beam.runners.spark.metrics.SparkMetricsContainer;
 import org.apache.beam.runners.spark.translation.streaming.utils.EmbeddedKafkaCluster;
 import org.apache.beam.runners.spark.util.GlobalWatermarkHolder;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.coders.InstantCoder;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
 import org.apache.beam.sdk.io.kafka.KafkaIO;
+import org.apache.beam.sdk.metrics.Counter;
+import org.apache.beam.sdk.metrics.MetricNameFilter;
+import org.apache.beam.sdk.metrics.Metrics;
+import org.apache.beam.sdk.metrics.MetricsFilter;
 import org.apache.beam.sdk.options.PipelineOptionsFactory;
 import org.apache.beam.sdk.testing.PAssert;
 import org.apache.beam.sdk.transforms.Aggregator;
+import org.apache.beam.sdk.transforms.Create;
 import org.apache.beam.sdk.transforms.DoFn;
 import org.apache.beam.sdk.transforms.GroupByKey;
 import org.apache.beam.sdk.transforms.Keys;
@@ -52,6 +62,7 @@ import org.apache.beam.sdk.transforms.ParDo;
 import org.apache.beam.sdk.transforms.SerializableFunction;
 import org.apache.beam.sdk.transforms.Sum;
 import org.apache.beam.sdk.transforms.Values;
+import org.apache.beam.sdk.transforms.View;
 import org.apache.beam.sdk.transforms.WithKeys;
 import org.apache.beam.sdk.transforms.windowing.AfterWatermark;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
@@ -59,6 +70,7 @@ import org.apache.beam.sdk.transforms.windowing.FixedWindows;
 import org.apache.beam.sdk.transforms.windowing.Window;
 import org.apache.beam.sdk.values.KV;
 import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionView;
 import org.apache.beam.sdk.values.PDone;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.ProducerRecord;
@@ -147,6 +159,11 @@ public class ResumeFromCheckpointStreamingTest {
         "k4", new Instant(400)
     ));
 
+    MetricsFilter metricsFilter =
+        MetricsFilter.builder()
+            .addNameFilter(MetricNameFilter.inNamespace(ResumeFromCheckpointStreamingTest.class))
+            .build();
+
     // first run will read from Kafka backlog - "auto.offset.reset=smallest"
     SparkPipelineResult res = run(options);
     res.waitUntilFinish(Duration.standardSeconds(2));
@@ -157,11 +174,15 @@ public class ResumeFromCheckpointStreamingTest {
             "Expected %d processed messages count but found %d", 4, processedMessages1),
         processedMessages1,
         equalTo(4L));
+    assertThat(res.metrics().queryMetrics(metricsFilter).counters(),
+        hasItem(attemptedMetricsResult(ResumeFromCheckpointStreamingTest.class.getName(),
+            "allMessages", "EOFShallNotPassFn", 4L)));
 
     //--- between executions:
 
     //- clear state.
-    AccumulatorSingleton.clear();
+    AggregatorsAccumulator.clear();
+    SparkMetricsContainer.clear();
     GlobalWatermarkHolder.clear();
 
     //- write a bit more.
@@ -175,11 +196,14 @@ public class ResumeFromCheckpointStreamingTest {
     res.waitUntilFinish(Duration.standardSeconds(2));
     // assertions 2:
     long processedMessages2 = res.getAggregatorValue("processedMessages", Long.class);
-    int successAssertions = res.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
     assertThat(
-        String.format("Expected %d processed messages count but found %d", 1, processedMessages2),
+        String.format("Expected %d processed messages count but found %d", 5, processedMessages2),
         processedMessages2,
         equalTo(5L));
+    assertThat(res.metrics().queryMetrics(metricsFilter).counters(),
+        hasItem(attemptedMetricsResult(ResumeFromCheckpointStreamingTest.class.getName(),
+            "allMessages", "EOFShallNotPassFn", 6L)));
+    int successAssertions = res.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
     res.getAggregatorValue(PAssert.SUCCESS_COUNTER, Integer.class);
     assertThat(
         String.format(
@@ -225,10 +249,14 @@ public class ResumeFromCheckpointStreamingTest {
 
     Pipeline p = Pipeline.create(options);
 
+    PCollection<String> expectedCol =
+        p.apply(Create.of(ImmutableList.of("side1", "side2")).withCoder(StringUtf8Coder.of()));
+    PCollectionView<List<String>> view = expectedCol.apply(View.<String>asList());
+
     PCollection<Iterable<String>> grouped = p
         .apply(read.withoutMetadata())
         .apply(Keys.<String>create())
-        .apply(ParDo.of(new EOFShallNotPassFn()))
+        .apply("EOFShallNotPassFn", ParDo.of(new EOFShallNotPassFn(view)).withSideInputs(view))
         .apply(Window.<String>into(FixedWindows.of(Duration.millis(500)))
             .triggering(AfterWatermark.pastEndOfWindow())
                 .accumulatingFiredPanes()
@@ -250,12 +278,22 @@ public class ResumeFromCheckpointStreamingTest {
 
   /** A pass-through fn that prevents EOF event from passing. */
   private static class EOFShallNotPassFn extends DoFn<String, String> {
+    final PCollectionView<List<String>> view;
     private final Aggregator<Long, Long> aggregator =
         createAggregator("processedMessages", Sum.ofLongs());
+    Counter counter =
+        Metrics.counter(ResumeFromCheckpointStreamingTest.class, "allMessages");
+
+    private EOFShallNotPassFn(PCollectionView<List<String>> view) {
+      this.view = view;
+    }
 
     @ProcessElement
     public void process(ProcessContext c) {
       String element = c.element();
+      // assert that side input is passed correctly before/after resuming from checkpoint.
+      assertThat(c.sideInput(view), containsInAnyOrder("side1", "side2"));
+      counter.inc();
       if (!element.equals("EOF")) {
         aggregator.addValue(1L);
         c.output(c.element());

http://git-wip-us.apache.org/repos/asf/beam/blob/f47e0eba/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/windowing/TimestampTransform.java
----------------------------------------------------------------------
diff --git a/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/windowing/TimestampTransform.java b/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/windowing/TimestampTransform.java
index b16e968..5318592 100644
--- a/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/windowing/TimestampTransform.java
+++ b/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/windowing/TimestampTransform.java
@@ -18,11 +18,12 @@
 package org.apache.beam.sdk.transforms.windowing;
 
 import com.google.auto.value.AutoValue;
+import java.io.Serializable;
 import org.joda.time.Duration;
 import org.joda.time.Instant;
 
 /** An abstract description of a standardized transformation on timestamps. */
-public abstract class TimestampTransform {
+public abstract class TimestampTransform implements Serializable{
 
   /** Returns a transform that shifts a timestamp later by {@code delay}. */
   public static TimestampTransform delay(Duration delay) {