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https://issues.apache.org/jira/browse/BEAM-1847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16322213#comment-16322213
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ASF GitHub Bot commented on BEAM-1847:
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RyanSkraba opened a new pull request #4391: [BEAM-1847]: Consider both max
records/time in KafkaIO bounded read.
URL: https://github.com/apache/beam/pull/4391
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When using withMaxNumRecords/withMaxReadTime arguments to create a bounded
collection from Kafka, there's no reason that *both* stopping conditions
(number of records and max time) couldn't be applied. When either condition is
met, the collection is finished.
Currently, setting one stopping condition silently deactivates the other. (
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> KafkaIO can't specify both max records and max duration.
> --------------------------------------------------------
>
> Key: BEAM-1847
> URL: https://issues.apache.org/jira/browse/BEAM-1847
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-extensions
> Reporter: Ryan Skraba
> Assignee: Ryan Skraba
> Priority: Minor
>
> Some Beam IOs that expose the ability to turn an unbounded source into a
> bounded source.
> For example, KafkaIO uses the underlying Read.from() API to specify the
> {{withMaxNumRecords}} and/or {{withMaxReadTime}}. If the former is
> specified, the latter is silently ignored.
> I would expect that the first stopping condition to be reached (either max
> records OR max duration) would stop the source.
> The underlying implementation {{BoundedReadFromUnboundedSource}} has this
> logic, but it is not supported -in Read.Unbounded- or the Beam IOs that
> expose this feature.
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