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Posted to dev@flink.apache.org by "Yun Tang (Jira)" <ji...@apache.org> on 2021/12/31 06:43:00 UTC

[jira] [Created] (FLINK-25494) Duplicate element serializer during DefaultOperatorStateBackendSnapshotStrategy#syncPrepareResources

Yun Tang created FLINK-25494:
--------------------------------

             Summary: Duplicate element serializer during DefaultOperatorStateBackendSnapshotStrategy#syncPrepareResources
                 Key: FLINK-25494
                 URL: https://issues.apache.org/jira/browse/FLINK-25494
             Project: Flink
          Issue Type: Bug
          Components: Runtime / State Backends
            Reporter: Yun Tang
            Assignee: Yun Tang
             Fix For: 1.15.0, 1.13.6, 1.14.3


Currently, during DefaultOperatorStateBackendSnapshotStrategy#syncPrepareResources, it will copy the array list serializer via PartitionableListState#deepCopy. However, it just initialize another ArrayListSerializer and not duplicate the internal state serializer:

 

See "{{internalListCopySerializer}}":
 
{code:java}
private PartitionableListState(
        RegisteredOperatorStateBackendMetaInfo<S> stateMetaInfo, ArrayList<S> internalList) {

    this.stateMetaInfo = Preconditions.checkNotNull(stateMetaInfo);
    this.internalList = Preconditions.checkNotNull(internalList);
    this.internalListCopySerializer =
            new ArrayListSerializer<>(stateMetaInfo.getPartitionStateSerializer());
} {code}
 



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