[jira] [Created] (BEAM-1847) Read.Unbounded can't specify both max records and max duration.

["Ryan Skraba (JIRA)" <ji...@apache.org>]

Ryan Skraba created BEAM-1847:
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             Summary: 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: Frances Perry


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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