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Posted to dev@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2018/03/06 11:10:00 UTC

[jira] [Created] (FLINK-8876) Improve concurrent access handling in stateful serializers

Stephan Ewen created FLINK-8876:
-----------------------------------

             Summary: Improve concurrent access handling in stateful serializers
                 Key: FLINK-8876
                 URL: https://issues.apache.org/jira/browse/FLINK-8876
             Project: Flink
          Issue Type: Improvement
          Components: Core
            Reporter: Stephan Ewen
            Assignee: Stephan Ewen
             Fix For: 1.5.0, 1.6.0


Some stateful serializers produce incorrect results when accidentally accessed by multiple threads concurrently.

 To better catch these cases, I suggest to add concurrency checks that are active only when debug logging is enabled, and during test runs.

This is inspired by Kryo's checks for concurrent access.



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