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From "Cristian Opris (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-18721) ForeachSink breaks Watermark in append mode
Date Mon, 05 Dec 2016 21:10:58 GMT
Cristian Opris created SPARK-18721:
--------------------------------------

             Summary: ForeachSink breaks Watermark in append mode
                 Key: SPARK-18721
                 URL: https://issues.apache.org/jira/browse/SPARK-18721
             Project: Spark
          Issue Type: Bug
          Components: Structured Streaming
    Affects Versions: 2.1.0
            Reporter: Cristian Opris
            Priority: Critical


The watermark is not updated in append mode with a ForeachSink

Because ForeachSink creates a separate IncrementalExecution instance, the physical plan will
be recreated for the logical plan, which results in a new EventTimeWatermarkExec operator
being created, that's unreachable from StreamExecution. This results in the watermark never
being updated, and append mode never emits results.




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