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https://issues.apache.org/jira/browse/BEAM-10984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17223783#comment-17223783
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Beam JIRA Bot commented on BEAM-10984:
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This issue is assigned but has not received an update in 30 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> 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
> Assignee: Reza ardeshir rokni
> Priority: P2
> Labels: stale-assigned
>
> 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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