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https://issues.apache.org/jira/browse/BEAM-1847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15953692#comment-15953692
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Ryan Skraba commented on BEAM-1847:
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My mistake, it's KafkaIO that ignores `withMaxReadTime()` when
`withMaxNumRecords()` is set -- `Read.Unbounded` does permits you combine the
stopping conditions.
> Read.Unbounded 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: Bug
> Components: beam-model
> Reporter: Ryan Skraba
> Assignee: Ryan Skraba
>
> 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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