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https://issues.apache.org/jira/browse/APEXCORE-648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15874903#comment-15874903
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Vlad Rozov commented on APEXCORE-648:
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[~brightchen] Please see https://github.com/vrozov/apex-core/tree/APEXCORE-648.
Can you benchmark the fix and compare old and new behavior.
> Unnecessary byte array copy in DefaultStatefulStreamCodec.toDataStatePair()
> ---------------------------------------------------------------------------
>
> Key: APEXCORE-648
> URL: https://issues.apache.org/jira/browse/APEXCORE-648
> Project: Apache Apex Core
> Issue Type: Bug
> Reporter: Vlad Rozov
> Assignee: Vlad Rozov
> Priority: Minor
>
> DefaultStatefulStreamCodec.toDataStatePair() calls Kryo Output.toBytes() that
> creates new byte[] and copies serialized data to the newly allocated array.
> It is not necessary as the output of toDataStatePair() will be copied again
> in PayloadTuple.getSerializedTuple().
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