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Posted to issues@beam.apache.org by "Maximilian Michels (JIRA)" <ji...@apache.org> on 2019/04/30 12:03:00 UTC

[jira] [Created] (BEAM-7188) LTS backport: FlinkRunner does not checkpoint partition view of watermark holds

Maximilian Michels created BEAM-7188:
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             Summary: LTS backport: FlinkRunner does not checkpoint partition view of watermark holds
                 Key: BEAM-7188
                 URL: https://issues.apache.org/jira/browse/BEAM-7188
             Project: Beam
          Issue Type: Bug
          Components: runner-flink
            Reporter: Maximilian Michels
            Assignee: Maximilian Michels
             Fix For: 2.11.0


The FlinkRunner does not persist its view of the per-partition Watermark holds. This can lead to elements to be considered late after restoring from a savepoint or resuming a failed pipeline.

Similar to the approach in BEAM-6650, we can recover the Watermarks by iterating through the keys of the state backend during recovery.



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