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https://issues.apache.org/jira/browse/FLINK-6215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16003111#comment-16003111
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ASF GitHub Bot commented on FLINK-6215:
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Github user kl0u commented on the issue:
https://github.com/apache/flink/pull/3669
@greghogan Not sure. In my understanding that was made for testing (this is
why the old implementation was not efficient) but there may be also some more
serious users. Any comments @aljoscha ?
> 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
> Fix For: 1.3.0
>
>
> 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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