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https://issues.apache.org/jira/browse/BEAM-10984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenneth Knowles updated BEAM-10984:
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Status: Open (was: Triage Needed)
> 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: P3
>
> 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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