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...d-rocksdb/src/test/java/org/apache/flink/contrib/streaming/state/RocksDBRecoveryTest.java
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| /* | ||
| * 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.contrib.streaming.state; | ||
|
|
||
| import org.apache.flink.api.common.state.ValueState; | ||
| import org.apache.flink.api.common.state.ValueStateDescriptor; | ||
| import org.apache.flink.api.common.typeutils.base.IntSerializer; | ||
| import org.apache.flink.runtime.checkpoint.CheckpointOptions; | ||
| import org.apache.flink.runtime.state.KeyGroupRange; | ||
| import org.apache.flink.runtime.state.KeyGroupRangeAssignment; | ||
| import org.apache.flink.runtime.state.KeyedStateHandle; | ||
| import org.apache.flink.runtime.state.SnapshotResult; | ||
| import org.apache.flink.runtime.state.StateObject; | ||
| import org.apache.flink.runtime.state.VoidNamespaceSerializer; | ||
| import org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory; | ||
| import org.apache.flink.testutils.junit.utils.TempDirUtils; | ||
| import org.apache.flink.util.IOUtils; | ||
|
|
||
| import org.junit.jupiter.api.Test; | ||
| import org.junit.jupiter.api.io.TempDir; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.concurrent.RunnableFuture; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| import static org.apache.flink.core.fs.Path.fromLocalFile; | ||
| import static org.apache.flink.core.fs.local.LocalFileSystem.getSharedInstance; | ||
|
|
||
| /** Rescaling microbenchmark for clip/ingest DB. */ | ||
| public class RocksDBRecoveryTest { | ||
|
|
||
| @TempDir private static java.nio.file.Path tempFolder; | ||
|
|
||
| @Test | ||
| public void testScaleOut_1_2() throws Exception { | ||
| testRescale(1, 2, 100_000_000, 10); | ||
| } | ||
|
|
||
| @Test | ||
| public void testScaleOut_2_8() throws Exception { | ||
| testRescale(2, 8, 100_000_000, 10); | ||
| } | ||
|
|
||
| @Test | ||
| public void testScaleIn_2_1() throws Exception { | ||
| testRescale(2, 1, 100_000_000, 10); | ||
| } | ||
|
|
||
| @Test | ||
| public void testScaleIn_8_2() throws Exception { | ||
| testRescale(8, 2, 100_000_000, 10); | ||
| } | ||
|
|
||
| public void testRescale( | ||
| int startParallelism, int restoreParallelism, int numKeys, int updateDistance) | ||
| throws Exception { | ||
|
|
||
| System.out.println( | ||
| "Rescaling from " + startParallelism + " to " + restoreParallelism + "..."); | ||
| final int maxParallelism = Math.max(startParallelism, restoreParallelism); | ||
| final List<RocksDBKeyedStateBackend<Integer>> backends = new ArrayList<>(maxParallelism); | ||
| final List<SnapshotResult<KeyedStateHandle>> snapshotResults = | ||
| new ArrayList<>(startParallelism); | ||
| try { | ||
| final List<ValueState<Integer>> valueStates = new ArrayList<>(maxParallelism); | ||
| try { | ||
| ValueStateDescriptor<Integer> stateDescriptor = | ||
| new ValueStateDescriptor<>("TestValueState", IntSerializer.INSTANCE); | ||
|
|
||
| for (int i = 0; i < startParallelism; ++i) { | ||
| RocksDBKeyedStateBackend<Integer> backend = | ||
| RocksDBTestUtils.builderForTestDefaults( | ||
| TempDirUtils.newFolder(tempFolder), | ||
| IntSerializer.INSTANCE, | ||
| maxParallelism, | ||
| KeyGroupRangeAssignment | ||
| .computeKeyGroupRangeForOperatorIndex( | ||
| maxParallelism, startParallelism, i), | ||
| Collections.emptyList()) | ||
| .setEnableIncrementalCheckpointing(true) | ||
| .setUseIngestDbRestoreMode(true) | ||
| .build(); | ||
|
|
||
| valueStates.add( | ||
| backend.getOrCreateKeyedState( | ||
| VoidNamespaceSerializer.INSTANCE, stateDescriptor)); | ||
|
|
||
| backends.add(backend); | ||
| } | ||
|
|
||
| System.out.println("Inserting " + numKeys + " keys..."); | ||
|
|
||
| for (int i = 0; i < numKeys; ++i) { | ||
| int key = i; | ||
| int index = | ||
| KeyGroupRangeAssignment.assignKeyToParallelOperator( | ||
| key, maxParallelism, startParallelism); | ||
| backends.get(index).setCurrentKey(key); | ||
| valueStates.get(index).update(i); | ||
|
|
||
| if (updateDistance > 0 && i % updateDistance == (updateDistance - 1)) { | ||
| key = i - updateDistance - 1; | ||
| index = | ||
| KeyGroupRangeAssignment.assignKeyToParallelOperator( | ||
| key, maxParallelism, startParallelism); | ||
| backends.get(index).setCurrentKey(key); | ||
| valueStates.get(index).update(i); | ||
| } | ||
| } | ||
|
|
||
| System.out.println("Creating snapshots..."); | ||
|
|
||
| for (int i = 0; i < backends.size(); ++i) { | ||
| RocksDBKeyedStateBackend<Integer> backend = backends.get(i); | ||
| FsCheckpointStreamFactory fsCheckpointStreamFactory = | ||
| new FsCheckpointStreamFactory( | ||
| getSharedInstance(), | ||
| fromLocalFile( | ||
| TempDirUtils.newFolder( | ||
| tempFolder, "checkpointsDir_" + i)), | ||
| fromLocalFile( | ||
| TempDirUtils.newFolder( | ||
| tempFolder, "sharedStateDir_" + i)), | ||
| 1, | ||
| 4096); | ||
|
|
||
| RunnableFuture<SnapshotResult<KeyedStateHandle>> snapshot = | ||
| backend.snapshot( | ||
| 0L, | ||
| 0L, | ||
| fsCheckpointStreamFactory, | ||
| CheckpointOptions.forCheckpointWithDefaultLocation()); | ||
|
|
||
| snapshot.run(); | ||
| snapshotResults.add(snapshot.get()); | ||
| } | ||
|
|
||
| } finally { | ||
| for (RocksDBKeyedStateBackend<Integer> backend : backends) { | ||
| IOUtils.closeQuietly(backend); | ||
| backend.dispose(); | ||
| } | ||
| valueStates.clear(); | ||
| backends.clear(); | ||
| } | ||
|
|
||
| List<KeyedStateHandle> stateHandles = | ||
| snapshotResults.stream() | ||
| .map(SnapshotResult::getJobManagerOwnedSnapshot) | ||
| .collect(Collectors.toList()); | ||
|
|
||
| System.out.println( | ||
| "Sum of snapshot sizes: " | ||
| + stateHandles.stream().mapToLong(StateObject::getStateSize).sum() | ||
| / (1024 * 1024) | ||
| + " MB"); | ||
|
|
||
| List<KeyGroupRange> ranges = new ArrayList<>(restoreParallelism); | ||
| for (int i = 0; i < restoreParallelism; ++i) { | ||
| ranges.add( | ||
| KeyGroupRangeAssignment.computeKeyGroupRangeForOperatorIndex( | ||
| maxParallelism, restoreParallelism, i)); | ||
| } | ||
|
|
||
| List<List<KeyedStateHandle>> handlesByInstance = new ArrayList<>(restoreParallelism); | ||
| for (KeyGroupRange targetRange : ranges) { | ||
| List<KeyedStateHandle> handlesForTargetRange = new ArrayList<>(1); | ||
| handlesByInstance.add(handlesForTargetRange); | ||
|
|
||
| for (KeyedStateHandle stateHandle : stateHandles) { | ||
| if (stateHandle.getKeyGroupRange().getIntersection(targetRange) | ||
| != KeyGroupRange.EMPTY_KEY_GROUP_RANGE) { | ||
| handlesForTargetRange.add(stateHandle); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| for (boolean useIngest : Arrays.asList(Boolean.FALSE, Boolean.TRUE)) { | ||
| System.out.println("Restoring using ingest db=" + useIngest + "... "); | ||
| long t = System.currentTimeMillis(); | ||
| for (int i = 0; i < restoreParallelism; ++i) { | ||
| List<KeyedStateHandle> instanceHandles = handlesByInstance.get(i); | ||
| long tInstance = System.currentTimeMillis(); | ||
| RocksDBKeyedStateBackend<Integer> backend = | ||
| RocksDBTestUtils.builderForTestDefaults( | ||
| TempDirUtils.newFolder(tempFolder), | ||
| IntSerializer.INSTANCE, | ||
| maxParallelism, | ||
| ranges.get(i), | ||
| instanceHandles) | ||
| .setEnableIncrementalCheckpointing(true) | ||
| .setUseIngestDbRestoreMode(useIngest) | ||
| .build(); | ||
| System.out.println( | ||
| " Restored instance " | ||
| + i | ||
| + " from " | ||
| + instanceHandles.size() | ||
| + " state handles" | ||
| + " time (ms): " | ||
| + (System.currentTimeMillis() - tInstance)); | ||
| backends.add(backend); | ||
| } | ||
| System.out.println("Total restore time (ms): " + (System.currentTimeMillis() - t)); | ||
| } | ||
|
|
||
| } finally { | ||
| for (RocksDBKeyedStateBackend<Integer> backend : backends) { | ||
| IOUtils.closeQuietly(backend); | ||
| backend.dispose(); | ||
| } | ||
| backends.clear(); | ||
| for (SnapshotResult<KeyedStateHandle> snapshotResult : snapshotResults) { | ||
| snapshotResult.discardState(); | ||
| } | ||
| } | ||
| } | ||
| } |
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