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https://issues.apache.org/jira/browse/BEAM-7962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16926684#comment-16926684
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Thomas Weise commented on BEAM-7962:
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[~markflyhigh] this issue does not block the 2.16 release. I removed the fix
version.
> Drop support for Flink 1.5 and 1.6
> ----------------------------------
>
> Key: BEAM-7962
> URL: https://issues.apache.org/jira/browse/BEAM-7962
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
>
> With Flink 1.9 around the corner, we should consider dropping support for
> Flink 1.5 and 1.6.
> This will get rid of Flink 1.5/1.6 specific workarounds, e.g. make use of
> Flink's {{preSnapshotBarrier}} in {{AbstractStreamOperator}} which removes
> the needs to buffer elements during a snapshot.
> Dropping 1.5/1.6 will also decrease the build time.
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