Yun Tang created FLINK-25494:
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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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