cloud-fan commented on code in PR #53652:
URL: https://github.com/apache/spark/pull/53652#discussion_r2660385785
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docs/sql-migration-guide.md:
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@@ -22,6 +22,10 @@ license: |
* Table of contents
{:toc}
+## Upgrading from Spark SQL 4.1 to 4.2
+
+- Since Spark 4.2, Spark enables order-independent checksums for shuffle
outputs by default to detect data inconsistencies during indeterminate shuffle
stage retries. If a checksum mismatch is detected, Spark rolls back and
re-executes all succeeding stages that depend on the shuffle output. If rolling
back is not possible for some succeeding stages, the job will fail. To restore
the previous behavior, set `spark.sql.shuffle.orderIndependentChecksum.enabled`
and `spark.sql.shuffle.orderIndependentChecksum.enableFullRetryOnMismatch` to
`false`.
Review Comment:
I think setting the first config to false is sufficient?
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