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Posted to commits@beam.apache.org by "Amit Sela (JIRA)" <ji...@apache.org> on 2016/12/18 13:36:59 UTC
[jira] [Updated] (BEAM-1177) Input DStream "bundles" should be in
serialized form and include relevant metadata.
[ https://issues.apache.org/jira/browse/BEAM-1177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Amit Sela updated BEAM-1177:
----------------------------
Description:
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, the resulting {{MapWithStateDStream}} would be checkpointed periodically and so it would still have to remain in serialized form.
was:
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.
> 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, the resulting {{MapWithStateDStream}} would be checkpointed periodically and so it would still have to remain in serialized form.
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