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https://issues.apache.org/jira/browse/BEAM-7962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16926428#comment-16926428
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David Moravek commented on BEAM-7962:
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[~mxm] awesome, if you already have the PR ready, feel free to send it for a
review!
[~markflyhigh] Personally I'd postpone it until 2.17, there is way to much
hustle around bringing 1.9 to beam right now. [~mxm] [~thw] What do you think?
> 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: David Moravek
> Priority: Major
> Fix For: 2.16.0
>
>
> 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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