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Posted to issues@beam.apache.org by "Jan Lukavský (JIRA)" <ji...@apache.org> on 2019/05/10 20:22:00 UTC

[jira] [Created] (BEAM-7269) Remove StateSpec from hashCode of SimpleStateTag

Jan Lukavský created BEAM-7269:
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             Summary: Remove StateSpec from hashCode of SimpleStateTag
                 Key: BEAM-7269
                 URL: https://issues.apache.org/jira/browse/BEAM-7269
             Project: Beam
          Issue Type: Bug
          Components: runner-core
    Affects Versions: 2.12.0
            Reporter: Jan Lukavský


SimpleStateTag is used as key in hash based StateTable, and currently is hashes and compares StateSpec and StructuredId, that are inside the SimpleStateTag. StateSpec hashes Coder into the resulting hashCode and when the Coder fails to have a proper hashCode and equals implementations, it results in wrong behavior (apparently missing states).



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