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https://issues.apache.org/jira/browse/BEAM-10984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17259064#comment-17259064
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Beam JIRA Bot commented on BEAM-10984:
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This issue is P2 but has been unassigned without any comment for 60 days so it
has been labeled "stale-P2". If this issue is still affecting you, we care!
Please comment and remove the label. Otherwise, in 14 days the issue will be
moved to P3.
Please see https://beam.apache.org/contribute/jira-priorities/ for a detailed
explanation of what these priorities mean.
> Dataflow's UnboundedReaderIterator should support overriding default bundle
> size targets
> ----------------------------------------------------------------------------------------
>
> Key: BEAM-10984
> URL: https://issues.apache.org/jira/browse/BEAM-10984
> Project: Beam
> Issue Type: Improvement
> Components: runner-dataflow
> Reporter: Daniel Mills
> Priority: P2
> Labels: stale-P2
>
> Currently, the UnboundedReaderIterator will read until 10k elements have been
> read or 10s have passed. This works for most pipelines, but is insufficient
> for pipelines that either require very high throughput or require low
> latency. We should make these values controllable via a PipelineOption,
> probably under DataflowPipelineDebugOptions.
> The constants are defined here:
> https://github.com/apache/beam/blob/master/runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/WorkerCustomSources.java#L757
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