[GitHub] [accumulo] milleruntime commented on a change in pull request #2358: Create page in Monitor for external compactions

[GitBox <gi...@apache.org>]

milleruntime commented on a change in pull request #2358:
URL: https://github.com/apache/accumulo/pull/2358#discussion_r751247548



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File path: test/src/main/java/org/apache/accumulo/test/compaction/ExternalCompactionProgressIT.java
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@@ -0,0 +1,166 @@
+/*
+ * 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.accumulo.test.compaction;
+
+import static org.apache.accumulo.fate.util.UtilWaitThread.sleepUninterruptibly;
+import static org.junit.Assert.assertTrue;
+
+import java.util.ArrayList;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.apache.accumulo.compactor.Compactor;
+import org.apache.accumulo.coordinator.CompactionCoordinator;
+import org.apache.accumulo.core.client.Accumulo;
+import org.apache.accumulo.core.client.AccumuloClient;
+import org.apache.accumulo.core.client.IteratorSetting;
+import org.apache.accumulo.core.compaction.thrift.TCompactionState;
+import org.apache.accumulo.core.iterators.IteratorUtil;
+import org.apache.accumulo.core.util.threads.Threads;
+import org.apache.accumulo.harness.AccumuloClusterHarness;
+import org.apache.accumulo.miniclusterImpl.MiniAccumuloClusterImpl;
+import org.apache.accumulo.miniclusterImpl.MiniAccumuloConfigImpl;
+import org.apache.accumulo.monitor.rest.compactions.external.RunningCompactorInfo;
+import org.apache.accumulo.test.functional.SlowIterator;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.thrift.TException;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Tests that external compactions report progress from start to finish. To prevent flaky test
+ * failures, we only measure progress in quarter segments: STARTED, QUARTER, HALF, THREE_QUARTERS.
+ * We can detect if the compaction finished without errors but the coordinator will never report
+ * 100% progress since it will remove the ECID upon completion. The {@link SlowIterator} is used to
+ * control the length of time it takes to complete the compaction.
+ */
+public class ExternalCompactionProgressIT extends AccumuloClusterHarness {
+  private static final Logger log = LoggerFactory.getLogger(ExternalCompactionProgressIT.class);
+  private static final int ROWS = 10_000;
+
+  enum EC_PROGRESS {
+    STARTED, QUARTER, HALF, THREE_QUARTERS
+  }
+
+  Map<String,RunningCompactorInfo> runningMap = new HashMap<>();
+  List<EC_PROGRESS> progressList = new ArrayList<>();
+
+  private final AtomicBoolean compactionFinished = new AtomicBoolean(false);
+
+  @Override
+  public void configureMiniCluster(MiniAccumuloConfigImpl cfg, Configuration coreSite) {
+    ExternalCompactionTestUtils.configureMiniCluster(cfg, coreSite);
+  }
+
+  @Test
+  public void testProgress() throws Exception {
+    MiniAccumuloClusterImpl.ProcessInfo c1 = null, coord = null;
+    String table1 = this.getUniqueNames(1)[0];
+    try (AccumuloClient client =
+        Accumulo.newClient().from(getCluster().getClientProperties()).build()) {
+      ExternalCompactionTestUtils.createTable(client, table1, "cs1");
+      ExternalCompactionTestUtils.writeData(client, table1, ROWS);
+      c1 = ((MiniAccumuloClusterImpl) getCluster()).exec(Compactor.class, "-q", "DCQ1");
+      coord = ExternalCompactionTestUtils.startCoordinator(((MiniAccumuloClusterImpl) getCluster()),
+          CompactionCoordinator.class, getCluster().getServerContext());
+
+      Thread checkerThread = startChecker();
+      checkerThread.start();
+
+      IteratorSetting setting = new IteratorSetting(50, "Slow", SlowIterator.class);
+      SlowIterator.setSleepTime(setting, 1);
+      client.tableOperations().attachIterator(table1, setting,
+          EnumSet.of(IteratorUtil.IteratorScope.majc));
+      log.info("Compacting table");
+      ExternalCompactionTestUtils.compact(client, table1, 2, "DCQ1", true);
+      ExternalCompactionTestUtils.verify(client, table1, 2, ROWS);
+
+      log.info("Done Compacting table");
+      compactionFinished.set(true);
+      checkerThread.join();
+
+      verifyProgress();
+    } finally {
+      ExternalCompactionTestUtils.stopProcesses(c1, coord);
+    }
+  }
+
+  public Thread startChecker() {
+    return Threads.createThread("RC checker", () -> {
+      try {
+        while (!compactionFinished.get()) {
+          checkRunning();
+          sleepUninterruptibly(1000, TimeUnit.MILLISECONDS);
+        }
+      } catch (TException e) {
+        log.warn("{}", e.getMessage(), e);
+      }
+    });
+  }
+
+  /**
+   * Check running compaction progress.
+   */
+  private void checkRunning() throws TException {
+    var ecList = ExternalCompactionTestUtils.getRunningCompactions(getCluster().getServerContext());
+    var ecMap = ecList.getCompactions();
+    if (ecMap != null) {
+      ecMap.forEach((ecid, ec) -> {
+        // returns null if it's a new mapping
+        var rci = new RunningCompactorInfo(System.currentTimeMillis(), ecid, ec);
+        var previous = runningMap.put(ecid, rci);
+        if (previous == null) {
+          log.debug("New ECID {} with inputFiles: {}", ecid, rci.inputFiles);
+        } else {
+          log.debug("{} progressed from {} to {}", ecid, previous.progress, rci.progress);
+          if (rci.progress <= previous.progress) {
+            log.warn("Compaction did not progress. It went from {} to {}", previous.progress,
+                rci.progress);
+          } else {
+            if (rci.progress > 0 && rci.progress < 25)
+              progressList.add(EC_PROGRESS.STARTED);
+            else if (rci.progress > 25 && rci.progress < 50)
+              progressList.add(EC_PROGRESS.QUARTER);
+            else if (rci.progress > 50 && rci.progress < 75)
+              progressList.add(EC_PROGRESS.HALF);
+            else if (rci.progress > 75 && rci.progress < 100)
+              progressList.add(EC_PROGRESS.THREE_QUARTERS);

Review comment:
       There won't ever be an update for 100% or 0% since these states are represented by other actions instead of passing updates between the processes. I will add comparisons to catch the other values.




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