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Posted to issues@flink.apache.org by "Stephan Ewen (Jira)" <ji...@apache.org> on 2020/10/01 14:45:00 UTC
[jira] [Commented] (FLINK-6215) Make the StatefulSequenceSource
scalable.
[ https://issues.apache.org/jira/browse/FLINK-6215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17205572#comment-17205572 ]
Stephan Ewen commented on FLINK-6215:
-------------------------------------
This should issue should be subsumed by this one: FLINK-19457
[~kkl0u] Should we close this and the related PRs?
> Make the StatefulSequenceSource scalable.
> -----------------------------------------
>
> Key: FLINK-6215
> URL: https://issues.apache.org/jira/browse/FLINK-6215
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.3.0
> Reporter: Kostas Kloudas
> Priority: Major
> Labels: pull-request-available
>
> Currently the {{StatefulSequenceSource}} instantiates all the elements to emit first and keeps them in memory. This is not scalable as for large sequences of elements this can lead to out of memory exceptions.
> To solve this, we can pre-partition the sequence of elements based on the {{maxParallelism}} parameter, and just keep state (to checkpoint) per such partition.
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