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[FLINK-21206] Write savepoints in unified format from HeapStateBackend
This closes apache#14809
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95 changes: 95 additions & 0 deletions
95
flink-runtime/src/main/java/org/apache/flink/runtime/state/heap/HeapSavepointStrategy.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.flink.runtime.state.heap; | ||
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| import org.apache.flink.api.common.typeutils.TypeSerializer; | ||
| import org.apache.flink.runtime.checkpoint.CheckpointOptions; | ||
| import org.apache.flink.runtime.state.CheckpointStreamFactory; | ||
| import org.apache.flink.runtime.state.CheckpointStreamWithResultProvider; | ||
| import org.apache.flink.runtime.state.CheckpointedStateScope; | ||
| import org.apache.flink.runtime.state.FullSnapshotAsyncWriter; | ||
| import org.apache.flink.runtime.state.FullSnapshotResources; | ||
| import org.apache.flink.runtime.state.KeyGroupRange; | ||
| import org.apache.flink.runtime.state.KeyedStateHandle; | ||
| import org.apache.flink.runtime.state.SnapshotStrategy; | ||
| import org.apache.flink.runtime.state.StateSerializerProvider; | ||
| import org.apache.flink.runtime.state.StreamCompressionDecorator; | ||
|
|
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| import javax.annotation.Nonnull; | ||
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| import java.util.Map; | ||
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| /** A strategy how to perform a snapshot of a {@link HeapKeyedStateBackend}. */ | ||
| class HeapSavepointStrategy<K> | ||
| implements SnapshotStrategy<KeyedStateHandle, FullSnapshotResources<K>> { | ||
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| private final Map<String, StateTable<K, ?, ?>> registeredKVStates; | ||
| private final Map<String, HeapPriorityQueueSnapshotRestoreWrapper<?>> registeredPQStates; | ||
| private final StreamCompressionDecorator keyGroupCompressionDecorator; | ||
| private final KeyGroupRange keyGroupRange; | ||
| private final StateSerializerProvider<K> keySerializerProvider; | ||
| private final int totalKeyGroups; | ||
|
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| HeapSavepointStrategy( | ||
| Map<String, StateTable<K, ?, ?>> registeredKVStates, | ||
| Map<String, HeapPriorityQueueSnapshotRestoreWrapper<?>> registeredPQStates, | ||
| StreamCompressionDecorator keyGroupCompressionDecorator, | ||
| KeyGroupRange keyGroupRange, | ||
| StateSerializerProvider<K> keySerializerProvider, | ||
| int totalKeyGroups) { | ||
| this.registeredKVStates = registeredKVStates; | ||
| this.registeredPQStates = registeredPQStates; | ||
| this.keyGroupCompressionDecorator = keyGroupCompressionDecorator; | ||
| this.keyGroupRange = keyGroupRange; | ||
| this.keySerializerProvider = keySerializerProvider; | ||
| this.totalKeyGroups = totalKeyGroups; | ||
| } | ||
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| @Override | ||
| public FullSnapshotResources<K> syncPrepareResources(long checkpointId) { | ||
| return HeapSnapshotResources.create( | ||
| registeredKVStates, | ||
| registeredPQStates, | ||
| keyGroupCompressionDecorator, | ||
| keyGroupRange, | ||
| getKeySerializer(), | ||
| totalKeyGroups); | ||
| } | ||
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| @Override | ||
| public SnapshotResultSupplier<KeyedStateHandle> asyncSnapshot( | ||
| FullSnapshotResources<K> syncPartResource, | ||
| long checkpointId, | ||
| long timestamp, | ||
| @Nonnull CheckpointStreamFactory streamFactory, | ||
| @Nonnull CheckpointOptions checkpointOptions) { | ||
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| assert checkpointOptions.getCheckpointType().isSavepoint(); | ||
| return new FullSnapshotAsyncWriter<>( | ||
| checkpointOptions.getCheckpointType(), | ||
| () -> | ||
| CheckpointStreamWithResultProvider.createSimpleStream( | ||
| CheckpointedStateScope.EXCLUSIVE, streamFactory), | ||
| syncPartResource); | ||
| } | ||
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| public TypeSerializer<K> getKeySerializer() { | ||
| return keySerializerProvider.currentSchemaSerializer(); | ||
| } | ||
| } |
190 changes: 190 additions & 0 deletions
190
flink-runtime/src/main/java/org/apache/flink/runtime/state/heap/HeapSnapshotResources.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.flink.runtime.state.heap; | ||
|
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| import org.apache.flink.annotation.Internal; | ||
| import org.apache.flink.api.common.typeutils.TypeSerializer; | ||
| import org.apache.flink.runtime.state.FullSnapshotResources; | ||
| import org.apache.flink.runtime.state.KeyGroupRange; | ||
| import org.apache.flink.runtime.state.KeyValueStateIterator; | ||
| import org.apache.flink.runtime.state.StateSnapshot; | ||
| import org.apache.flink.runtime.state.StateSnapshotRestore; | ||
| import org.apache.flink.runtime.state.StreamCompressionDecorator; | ||
| import org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot; | ||
| import org.apache.flink.util.Preconditions; | ||
|
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| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
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| /** | ||
| * A set of resources required to take a checkpoint or savepoint from a {@link | ||
| * HeapKeyedStateBackend}. | ||
| */ | ||
| @Internal | ||
| final class HeapSnapshotResources<K> implements FullSnapshotResources<K> { | ||
| private final List<StateMetaInfoSnapshot> metaInfoSnapshots; | ||
| private final Map<StateUID, StateSnapshot> cowStateStableSnapshots; | ||
| private final StreamCompressionDecorator streamCompressionDecorator; | ||
| private final Map<StateUID, Integer> stateNamesToId; | ||
| private final KeyGroupRange keyGroupRange; | ||
| private final TypeSerializer<K> keySerializer; | ||
| private final int totalKeyGroups; | ||
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| private HeapSnapshotResources( | ||
| List<StateMetaInfoSnapshot> metaInfoSnapshots, | ||
| Map<StateUID, StateSnapshot> cowStateStableSnapshots, | ||
| StreamCompressionDecorator streamCompressionDecorator, | ||
| Map<StateUID, Integer> stateNamesToId, | ||
| KeyGroupRange keyGroupRange, | ||
| TypeSerializer<K> keySerializer, | ||
| int totalKeyGroups) { | ||
| this.metaInfoSnapshots = metaInfoSnapshots; | ||
| this.cowStateStableSnapshots = cowStateStableSnapshots; | ||
| this.streamCompressionDecorator = streamCompressionDecorator; | ||
| this.stateNamesToId = stateNamesToId; | ||
| this.keyGroupRange = keyGroupRange; | ||
| this.keySerializer = keySerializer; | ||
| this.totalKeyGroups = totalKeyGroups; | ||
| } | ||
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| public static <K> HeapSnapshotResources<K> create( | ||
| Map<String, StateTable<K, ?, ?>> registeredKVStates, | ||
| Map<String, HeapPriorityQueueSnapshotRestoreWrapper<?>> registeredPQStates, | ||
| StreamCompressionDecorator streamCompressionDecorator, | ||
| KeyGroupRange keyGroupRange, | ||
| TypeSerializer<K> keySerializer, | ||
| int totalKeyGroups) { | ||
|
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| if (registeredKVStates.isEmpty() && registeredPQStates.isEmpty()) { | ||
| return new HeapSnapshotResources<>( | ||
| Collections.emptyList(), | ||
| Collections.emptyMap(), | ||
| streamCompressionDecorator, | ||
| Collections.emptyMap(), | ||
| keyGroupRange, | ||
| keySerializer, | ||
| totalKeyGroups); | ||
| } | ||
|
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| int numStates = registeredKVStates.size() + registeredPQStates.size(); | ||
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| Preconditions.checkState( | ||
| numStates <= Short.MAX_VALUE, | ||
| "Too many states: " | ||
| + numStates | ||
| + ". Currently at most " | ||
| + Short.MAX_VALUE | ||
| + " states are supported"); | ||
|
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| final List<StateMetaInfoSnapshot> metaInfoSnapshots = new ArrayList<>(numStates); | ||
| final Map<StateUID, Integer> stateNamesToId = new HashMap<>(numStates); | ||
| final Map<StateUID, StateSnapshot> cowStateStableSnapshots = new HashMap<>(numStates); | ||
|
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| processSnapshotMetaInfoForAllStates( | ||
| metaInfoSnapshots, | ||
| cowStateStableSnapshots, | ||
| stateNamesToId, | ||
| registeredKVStates, | ||
| StateMetaInfoSnapshot.BackendStateType.KEY_VALUE); | ||
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| processSnapshotMetaInfoForAllStates( | ||
| metaInfoSnapshots, | ||
| cowStateStableSnapshots, | ||
| stateNamesToId, | ||
| registeredPQStates, | ||
| StateMetaInfoSnapshot.BackendStateType.PRIORITY_QUEUE); | ||
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| return new HeapSnapshotResources<>( | ||
| metaInfoSnapshots, | ||
| cowStateStableSnapshots, | ||
| streamCompressionDecorator, | ||
| stateNamesToId, | ||
| keyGroupRange, | ||
| keySerializer, | ||
| totalKeyGroups); | ||
| } | ||
|
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| private static void processSnapshotMetaInfoForAllStates( | ||
| List<StateMetaInfoSnapshot> metaInfoSnapshots, | ||
| Map<StateUID, StateSnapshot> cowStateStableSnapshots, | ||
| Map<StateUID, Integer> stateNamesToId, | ||
| Map<String, ? extends StateSnapshotRestore> registeredStates, | ||
| StateMetaInfoSnapshot.BackendStateType stateType) { | ||
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| for (Map.Entry<String, ? extends StateSnapshotRestore> kvState : | ||
| registeredStates.entrySet()) { | ||
| final StateUID stateUid = StateUID.of(kvState.getKey(), stateType); | ||
| stateNamesToId.put(stateUid, stateNamesToId.size()); | ||
| StateSnapshotRestore state = kvState.getValue(); | ||
| if (null != state) { | ||
| final StateSnapshot stateSnapshot = state.stateSnapshot(); | ||
| metaInfoSnapshots.add(stateSnapshot.getMetaInfoSnapshot()); | ||
| cowStateStableSnapshots.put(stateUid, stateSnapshot); | ||
| } | ||
| } | ||
| } | ||
|
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| @Override | ||
| public void release() { | ||
| for (StateSnapshot stateSnapshot : cowStateStableSnapshots.values()) { | ||
| stateSnapshot.release(); | ||
| } | ||
| } | ||
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| public List<StateMetaInfoSnapshot> getMetaInfoSnapshots() { | ||
| return metaInfoSnapshots; | ||
| } | ||
|
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| @Override | ||
| public KeyValueStateIterator createKVStateIterator() throws IOException { | ||
| return new HeapKeyValueStateIterator( | ||
| keyGroupRange, | ||
| keySerializer, | ||
| totalKeyGroups, | ||
| stateNamesToId, | ||
| cowStateStableSnapshots); | ||
| } | ||
|
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| @Override | ||
| public KeyGroupRange getKeyGroupRange() { | ||
| return keyGroupRange; | ||
| } | ||
|
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| @Override | ||
| public TypeSerializer<K> getKeySerializer() { | ||
| return keySerializer; | ||
| } | ||
|
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| @Override | ||
| public StreamCompressionDecorator getStreamCompressionDecorator() { | ||
| return streamCompressionDecorator; | ||
| } | ||
|
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| public Map<StateUID, StateSnapshot> getCowStateStableSnapshots() { | ||
| return cowStateStableSnapshots; | ||
| } | ||
|
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| public Map<StateUID, Integer> getStateNamesToId() { | ||
| return stateNamesToId; | ||
| } | ||
| } |
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