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Posted to issues@flink.apache.org by "Admaing (via GitHub)" <gi...@apache.org> on 2026/09/29 00:33:41 UTC

[PR] [BP-2.2][FLINK-40504][runtime] Re-activate idle FLIP-27 outputs when they resume [flink]

Admaing opened a new pull request, #29332:
URL: https://github.com/apache/flink/pull/29332

   Backport of https://github.com/apache/flink/pull/29239 (91e1e5fba04a .. 0897586aa505), which went to master but not to this branch.
   
   A FLIP-27 source that was announced as IDLE downstream stayed IDLE after it resumed, unless its next watermark strictly advanced the combined watermark: `WatermarkOutputMultiplexer` never reported the active state of the combined status, `WatermarksWithIdleness` never undid the `markIdle()` it had emitted, and `WatermarkToDataOutput` marked the output active only after the monotonicity guard. Records of a resumed source could therefore be dropped as late events.
   
   The four commits are cherry-picked without conflicts; the touched files are identical on `release-2.2`, and the new test file is the only addition.
   
   Verified locally on JDK 17: `*Watermark*Test`, `SourceOperatorEventTimeTest` and `SourceOperatorAlignmentTest` pass (21 test classes, 139 tests). That includes the new `ProgressiveTimestampsAndWatermarksSubtaskIdlenessTest` and the `SourceOperatorAlignmentTest` case that an earlier version of the fix broke.
   


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Re: [PR] [BP-2.2][FLINK-40504][runtime] Re-activate idle FLIP-27 outputs when they resume [flink]

Posted by "MartijnVisser (via GitHub)" <gi...@apache.org>.
MartijnVisser commented on PR #29332:
URL: https://github.com/apache/flink/pull/29332#issuecomment-5927876736

   @Admaing Can you please rebase?


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Re: [PR] [BP-2.2][FLINK-40504][runtime] Re-activate idle FLIP-27 outputs when they resume [flink]

Posted by "MartijnVisser (via GitHub)" <gi...@apache.org>.
MartijnVisser merged PR #29332:
URL: https://github.com/apache/flink/pull/29332


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Re: [PR] [BP-2.2][FLINK-40504][runtime] Re-activate idle FLIP-27 outputs when they resume [flink]

Posted by "flinkbot (via GitHub)" <gi...@apache.org>.
flinkbot commented on PR #29332:
URL: https://github.com/apache/flink/pull/29332#issuecomment-5881537637

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Re: [PR] [BP-2.2][FLINK-40504][runtime] Re-activate idle FLIP-27 outputs when they resume [flink]

Posted by "Admaing (via GitHub)" <gi...@apache.org>.
Admaing commented on PR #29332:
URL: https://github.com/apache/flink/pull/29332#issuecomment-5928539420

   > @Admaing Can you please rebase?
   
   @MartijnVisser 
   Done


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