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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2022/11/09 07:12:34 UTC
[GitHub] [flink-table-store] tsreaper commented on a diff in pull request #361: [FLINK-29752] Modify Flink Table Store connector to trigger full compaction constantly when full changelog is needed
tsreaper commented on code in PR #361:
URL: https://github.com/apache/flink-table-store/pull/361#discussion_r1017509266
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flink-table-store-connector/src/main/java/org/apache/flink/table/store/connector/sink/FullChangelogStoreWriteOperator.java:
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@@ -0,0 +1,224 @@
+/*
+ * 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.flink.table.store.connector.sink;
+
+import org.apache.flink.api.common.state.ListState;
+import org.apache.flink.api.common.state.ListStateDescriptor;
+import org.apache.flink.api.common.typeutils.TypeSerializer;
+import org.apache.flink.api.common.typeutils.base.IntSerializer;
+import org.apache.flink.api.common.typeutils.base.LongSerializer;
+import org.apache.flink.api.java.tuple.Tuple2;
+import org.apache.flink.api.java.tuple.Tuple3;
+import org.apache.flink.api.java.typeutils.runtime.TupleSerializer;
+import org.apache.flink.runtime.state.StateInitializationContext;
+import org.apache.flink.runtime.state.StateSnapshotContext;
+import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
+import org.apache.flink.table.data.RowData;
+import org.apache.flink.table.data.binary.BinaryRowData;
+import org.apache.flink.table.runtime.typeutils.BinaryRowDataSerializer;
+import org.apache.flink.table.store.CoreOptions;
+import org.apache.flink.table.store.file.Snapshot;
+import org.apache.flink.table.store.file.utils.SnapshotManager;
+import org.apache.flink.table.store.table.FileStoreTable;
+import org.apache.flink.table.store.table.sink.LogSinkFunction;
+import org.apache.flink.table.store.table.sink.SinkRecord;
+
+import javax.annotation.Nullable;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.NavigableMap;
+import java.util.Optional;
+import java.util.Set;
+import java.util.TreeMap;
+
+/**
+ * A {@link StoreWriteOperator} for {@link
+ * org.apache.flink.table.store.CoreOptions.ChangelogProducer#FULL_COMPACTION} changelog producer.
+ */
+public class FullChangelogStoreWriteOperator extends StoreWriteOperator {
+
+ private final long checkpointThreshold;
+
+ private transient Set<Tuple2<BinaryRowData, Integer>> currentWrittenBuckets;
+ private transient NavigableMap<Long, Set<Tuple2<BinaryRowData, Integer>>> writtenBuckets;
+ private transient ListState<Tuple3<Long, BinaryRowData, Integer>> writtenBucketState;
+ private transient Long snapshotIdentifierToCheck;
+
+ public FullChangelogStoreWriteOperator(
+ FileStoreTable table,
+ String initialCommitUser,
+ @Nullable Map<String, String> overwritePartition,
+ @Nullable LogSinkFunction logSinkFunction,
+ long checkpointThreshold) {
+ super(table, initialCommitUser, overwritePartition, logSinkFunction);
+ this.checkpointThreshold = checkpointThreshold;
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public void initializeState(StateInitializationContext context) throws Exception {
+ super.initializeState(context);
+
+ TupleSerializer<Tuple3<Long, BinaryRowData, Integer>> writtenBucketStateSerializer =
+ new TupleSerializer<>(
+ (Class<Tuple3<Long, BinaryRowData, Integer>>) (Class<?>) Tuple3.class,
+ new TypeSerializer[] {
+ LongSerializer.INSTANCE,
+ new BinaryRowDataSerializer(
+ table.schema().logicalPartitionType().getFieldCount()),
+ IntSerializer.INSTANCE
+ });
+ writtenBucketState =
+ context.getOperatorStateStore()
+ .getListState(
+ new ListStateDescriptor<>(
+ "table_store_written_buckets",
+ writtenBucketStateSerializer));
+ writtenBuckets = new TreeMap<>();
+ writtenBucketState
+ .get()
+ .forEach(
+ t ->
+ writtenBuckets
+ .computeIfAbsent(t.f0, k -> new HashSet<>())
+ .add(Tuple2.of(t.f1, t.f2)));
+
+ snapshotIdentifierToCheck = null;
+ }
+
+ @Override
+ public void open() throws Exception {
+ super.open();
+ currentWrittenBuckets = new HashSet<>();
+ }
+
+ @Override
+ public void processElement(StreamRecord<RowData> element) throws Exception {
+ SinkRecord record = writeRecord(element);
+
+ BinaryRowData partition = record.partition();
+ int bucket = record.bucket();
+ // partition is a reused BinaryRowData
+ // we first check if the tuple exists to minimize copying
+ if (!currentWrittenBuckets.contains(Tuple2.of(partition, bucket))) {
+ currentWrittenBuckets.add(Tuple2.of(partition.copy(), bucket));
+ }
+ }
+
+ @Override
+ public void snapshotState(StateSnapshotContext context) throws Exception {
+ super.snapshotState(context);
+
+ List<Tuple3<Long, BinaryRowData, Integer>> writtenBucketList = new ArrayList<>();
+ for (Map.Entry<Long, Set<Tuple2<BinaryRowData, Integer>>> entry :
+ writtenBuckets.entrySet()) {
+ for (Tuple2<BinaryRowData, Integer> bucket : entry.getValue()) {
+ writtenBucketList.add(Tuple3.of(entry.getKey(), bucket.f0, bucket.f1));
+ }
+ }
+ writtenBucketState.update(writtenBucketList);
+ }
+
+ @Override
+ protected List<Committable> prepareCommit(boolean blocking, long checkpointId)
+ throws IOException {
+ if (snapshotIdentifierToCheck != null) {
+ Optional<Snapshot> snapshot = findSnapshot(snapshotIdentifierToCheck);
+ if (snapshot.map(s -> s.commitKind() == Snapshot.CommitKind.COMPACT).orElse(false)) {
+ writtenBuckets.headMap(snapshotIdentifierToCheck, true).clear();
+ snapshotIdentifierToCheck = null;
+ }
+ }
+
+ if (!currentWrittenBuckets.isEmpty()) {
+ writtenBuckets
+ .computeIfAbsent(checkpointId, k -> new HashSet<>())
+ .addAll(currentWrittenBuckets);
+ currentWrittenBuckets.clear();
+ }
+
+ if (snapshotIdentifierToCheck == null // wait for last forced full compaction to complete
+ && !writtenBuckets.isEmpty() // there should be something to compact
+ && checkpointId - writtenBuckets.navigableKeySet().first() + 1
+ >= checkpointThreshold // checkpoints without full compaction exceeds
+ ) {
+ blocking = true;
Review Comment:
I prefer `waitForCompaction`
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