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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/11/26 13:13:02 UTC
[jira] [Updated] (FLINK-6215) Make the StatefulSequenceSource
scalable.
[ https://issues.apache.org/jira/browse/FLINK-6215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated FLINK-6215:
----------------------------------
Labels: pull-request-available (was: )
> Make the StatefulSequenceSource scalable.
> -----------------------------------------
>
> Key: FLINK-6215
> URL: https://issues.apache.org/jira/browse/FLINK-6215
> Project: Flink
> Issue Type: Bug
> Components: DataStream API
> Affects Versions: 1.3.0
> Reporter: Kostas Kloudas
> Assignee: 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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