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https://issues.apache.org/jira/browse/FLINK-6493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16112235#comment-16112235
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ASF GitHub Bot commented on FLINK-6493:
---------------------------------------
Github user tzulitai commented on the issue:
https://github.com/apache/flink/pull/4328
LGTM, merging ..
> Ineffective null check in RegisteredOperatorBackendStateMetaInfo#equals()
> -------------------------------------------------------------------------
>
> Key: FLINK-6493
> URL: https://issues.apache.org/jira/browse/FLINK-6493
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Reporter: Ted Yu
> Assignee: mingleizhang
> Priority: Minor
> Fix For: 1.4.0
>
>
> {code}
> && ((partitionStateSerializer == null && ((Snapshot)
> obj).getPartitionStateSerializer() == null)
> || partitionStateSerializer.equals(((Snapshot)
> obj).getPartitionStateSerializer()))
> && ((partitionStateSerializerConfigSnapshot == null && ((Snapshot)
> obj).getPartitionStateSerializerConfigSnapshot() == null)
> || partitionStateSerializerConfigSnapshot.equals(((Snapshot)
> obj).getPartitionStateSerializerConfigSnapshot()));
> {code}
> The null check for partitionStateSerializer /
> partitionStateSerializerConfigSnapshot is in combination with another clause.
> This may lead to NPE in the partitionStateSerializer.equals() call.
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