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Posted to issues@spark.apache.org by "Nicholas Chew (Jira)" <ji...@apache.org> on 2026/03/13 18:13:00 UTC

[jira] [Created] (SPARK-55987) Fix time window join in stream-stream join state format V4

Nicholas Chew created SPARK-55987:
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             Summary: Fix time window join in stream-stream join state format V4
                 Key: SPARK-55987
                 URL: https://issues.apache.org/jira/browse/SPARK-55987
             Project: Spark
          Issue Type: Bug
          Components: Structured Streaming
    Affects Versions: 4.2.0
            Reporter: Nicholas Chew


Stream-stream join V4 state manager was deducing the event time column ordinal in join keys independently per side which didn't work for window structs.

Instead, use findJoinKeyOrdinalForWatermark from StreamingSymmetricHashJoinHelper which correctly resolves this for both sides.



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