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Posted to commits@beam.apache.org by "Chamikara Jayalath (JIRA)" <ji...@apache.org> on 2018/03/21 23:56:00 UTC

[jira] [Created] (BEAM-3907) Clarify how watermark is estimated for watchForNewFiles() transforms

Chamikara Jayalath created BEAM-3907:
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             Summary: Clarify how watermark is estimated for watchForNewFiles() transforms
                 Key: BEAM-3907
                 URL: https://issues.apache.org/jira/browse/BEAM-3907
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-core
            Reporter: Chamikara Jayalath
            Assignee: Eugene Kirpichov


For example [https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/io/AvroIO.java#L488]

It's not clear how the watermark will be estimated/incremented when using these transforms. 

Other source implementations seems to be describing this. For example: https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubUnboundedSource.java#L89



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