akshaytayal opened a new pull request, #13247:
URL: https://github.com/apache/gluten/pull/13247

   ## What changes are proposed in this pull request?
   
   Re-enables 2 Spark 4.2 MERGE tests in each of 
`GlutenDeltaBasedMergeIntoTableSuite`, 
`GlutenDeltaBasedMergeIntoTableUpdateAsDeleteAndInsertSuite` and 
`GlutenGroupBasedMergeIntoTableSuite` (6 in total):
   
   - `merge with literal false ON condition`
   - `merge with statically empty source and only MATCHED clauses`
   
   Spark 4.2 attaches a `MergeSummary` to the commit, built from the metrics of 
the `MergeRowsExec` in the write plan. With Gluten, the commit for these two 
statically empty merges has no write summary, so the tests fail with 
`NoSuchElementException: None.get` in `getMergeSummary()`. The other MERGE 
tests pass.
   
   This commit only removes the 6 excludes. The fix will follow in this PR. The 
other #13175 tests need different fixes and are in #13244 (DELETE) and #__NN__ 
(NOT NULL enforcement).
   
   Part of #13175.
   
   ## How was this patch tested?
   
   Spark 4.2 UT CI (`spark-test-spark42` group 3 runs 
`org.apache.spark.sql.connector`).
   
   ## Was this patch authored or co-authored using generative AI tooling?
   
   Generated-by: GitHub Copilot CLI (Claude Opus 5.5)
   


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