[
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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
