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https://issues.apache.org/jira/browse/FLINK-14833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16983395#comment-16983395
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Jiayi Liao commented on FLINK-14833:
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[~liyu] Thanks for your attention and detailed answer. I'll submit a PR soon.
> Remove unnecessary SnapshotStrategySynchronicityBehavior interface from
> HeapSnapshotStrategy
> --------------------------------------------------------------------------------------------
>
> Key: FLINK-14833
> URL: https://issues.apache.org/jira/browse/FLINK-14833
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / State Backends
> Affects Versions: 1.9.1
> Reporter: Jiayi Liao
> Priority: Major
>
> Since all methods implementing from {{SnapshotStrategySynchronicityBehavior}}
> in {{HeapSnapshotStrategy}} are executing as the same pattern below:
> {code:java}
> @Override
> public void finalizeSnapshotBeforeReturnHook(Runnable runnable) {
>
> snapshotStrategySynchronicityTrait.finalizeSnapshotBeforeReturnHook(runnable);
> }
> @Override
> public boolean isAsynchronous() {
> return snapshotStrategySynchronicityTrait.isAsynchronous();
> }
> @Override
> public <N, V> StateTable<K, N, V> newStateTable(
> InternalKeyContext<K> keyContext,
> RegisteredKeyValueStateBackendMetaInfo<N, V> newMetaInfo,
> TypeSerializer<K> keySerializer) {
> return snapshotStrategySynchronicityTrait.newStateTable(keyContext,
> newMetaInfo, keySerializer);
> }
> {code}
> It looks like implementing the {{SnapshotStrategySynchronicityBehavior}}
> interface is not necessary for {{HeapSnapshotStrategy}} and we can just
> remove it and the related {{@Override}} annotations. And
> {{HeapSnapshotStrategy}} doesn't match the java docs in
> {{SnapshotStrategySynchronicityBehavior}} also.
>
> And please correct me if there is a reason here.
>
> cc [~liyu]
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