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Posted to issues@spark.apache.org by "Jungtaek Lim (Jira)" <ji...@apache.org> on 2026/04/09 03:43:00 UTC

[jira] [Created] (SPARK-56406) Stream-stream join v4: skip accessing secondary index for non-timestamp workload

Jungtaek Lim created SPARK-56406:
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             Summary: Stream-stream join v4: skip accessing secondary index for non-timestamp workload
                 Key: SPARK-56406
                 URL: https://issues.apache.org/jira/browse/SPARK-56406
             Project: Spark
          Issue Type: Improvement
          Components: Structured Streaming
    Affects Versions: 4.2.0
            Reporter: Jungtaek Lim


For non-timestamp workload in stream-stream join v4, we don't really get benefit from having secondary index. The purpose of secondary index is eviction and non-timestamp workload does not perform eviction at all, hence we don't really need to read and update secondary index.



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