[jira] [Created] (SPARK-49462) A query running under ckpt version v1 should be able to read a STATELESS query running under ckptv2

["Wei Liu (Jira)" <ji...@apache.org>]

Wei Liu created SPARK-49462:
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             Summary: A query running under ckpt version v1 should be able to read a STATELESS query running under ckptv2
                 Key: SPARK-49462
                 URL: https://issues.apache.org/jira/browse/SPARK-49462
             Project: Spark
          Issue Type: Task
          Components: SS
    Affects Versions: 4.0.0
            Reporter: Wei Liu


Follow up to [https://github.com/apache/spark/pull/47932]

The validate version method force checks if the version persisted in the commit log 

[https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/CommitLog.scala#L59]

 

But the V2 checkpoint is only meaningful to stateful queries, so for a stateless query, a CommitLog running under V1 (old code) should be able to process a persisted commit log that has V2 format (new log)



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