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Posted to issues@spark.apache.org by "Alex Balikov (Jira)" <ji...@apache.org> on 2022/10/27 20:35:00 UTC

[jira] [Created] (SPARK-40942) Allow for negative initial watermark value

Alex Balikov created SPARK-40942:
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             Summary: Allow for negative initial watermark value
                 Key: SPARK-40942
                 URL: https://issues.apache.org/jira/browse/SPARK-40942
             Project: Spark
          Issue Type: Improvement
          Components: Structured Streaming
    Affects Versions: 3.4.0
            Reporter: Alex Balikov


Currently at Spark SS pipeline start, the initial watermark value is 0 and thus records with event time 0 will be filtered out as late due to the requirement of event time > watermark. This is untypical scenario as event 0 is probably synthetic, but still probably should be handled.



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