Thomas Groh created BEAM-771:
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Summary: UnboundedReadEvaluator should reuse the input reader if
it contains no elements
Key: BEAM-771
URL: https://issues.apache.org/jira/browse/BEAM-771
Project: Beam
Issue Type: Bug
Reporter: Thomas Groh
Assignee: Thomas Groh
The UnboundedReadEvaluator checks, after it obtains the reader, that the reader
contains elements, and terminates without taking a new checkpoint if not. It
must also (but currently does not) add that reader and shard back as a residual
element.
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