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Posted to dev@flink.apache.org by "Aljoscha Krettek (JIRA)" <ji...@apache.org> on 2018/07/27 12:08:00 UTC

[jira] [Created] (FLINK-9983) Savepoints should count as checkpoints when recovering

Aljoscha Krettek created FLINK-9983:
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             Summary: Savepoints should count as checkpoints when recovering
                 Key: FLINK-9983
                 URL: https://issues.apache.org/jira/browse/FLINK-9983
             Project: Flink
          Issue Type: Bug
          Components: State Backends, Checkpointing
            Reporter: Aljoscha Krettek
             Fix For: 1.6.0


If they are not used when recovering you can get intro problems with duplicate output data when a failure occurs after a savepoint was taken but before the next checkpoint occurs.

The fix, in the long run, is to differentiate between savepoints that have side effects and those that don't. The former would be used for a "stop-with-savepoint" scenario while the latter is for in-between savepoints. This is harder to implement, so I vote for the easy fix described for now for fixing the duplication problems.



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