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From "Amit Sela (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-1177) Input DStream "bundles" should be in serialized form and include relevant metadata.
Date Sun, 18 Dec 2016 13:35:58 GMT
Amit Sela created BEAM-1177:
-------------------------------

             Summary: Input DStream "bundles" should be in serialized form and include relevant
metadata.
                 Key: BEAM-1177
                 URL: https://issues.apache.org/jira/browse/BEAM-1177
             Project: Beam
          Issue Type: Bug
          Components: runner-spark
            Reporter: Amit Sela
            Assignee: Amit Sela


Currently, the input partitions hold "bundles" of read elements within the {{mapWithStateDStream}}
used for the read.
Since this is automatically shuffled, user-data (the read elements) should be serialized using
coders to avoid breaking (if user-data is not {{Kryo}} serializable).
Even after BEAM-848 would complete, this {{MapWithStateDStream}} would be checkpointed periodically
and so it would still have to remain in serialized form.



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