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[FLINK-11730] [State Backends] Make HeapKeyedStateBackend follow the …
…builder pattern This closes apache#7866.
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31 changes: 31 additions & 0 deletions
31
flink-runtime/src/main/java/org/apache/flink/runtime/state/RestoreOperation.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * 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:https://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; | ||
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| /** | ||
| * Interface for restore operation. | ||
| * | ||
| * @param <R> Generic type of the restore result. | ||
| */ | ||
| public interface RestoreOperation<R> { | ||
| /** | ||
| * Restores state that was previously snapshot-ed from the provided state handles. | ||
| */ | ||
| R restore() throws Exception; | ||
| } |
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.../java/org/apache/flink/runtime/state/heap/AsyncSnapshotStrategySynchronicityBehavior.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:https://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.runtime.state.RegisteredKeyValueStateBackendMetaInfo; | ||
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| /** | ||
| * Asynchronous behavior for heap snapshot strategy. | ||
| * | ||
| * @param <K> The data type that the serializer serializes. | ||
| */ | ||
| class AsyncSnapshotStrategySynchronicityBehavior<K> implements SnapshotStrategySynchronicityBehavior<K> { | ||
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| @Override | ||
| public boolean isAsynchronous() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public <N, V> StateTable<K, N, V> newStateTable( | ||
| InternalKeyContext<K> keyContext, | ||
| RegisteredKeyValueStateBackendMetaInfo<N, V> newMetaInfo) { | ||
| return new CopyOnWriteStateTable<>(keyContext, newMetaInfo); | ||
| } | ||
| } |
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