yaooqinn opened a new pull request, #54619:
URL: https://github.com/apache/spark/pull/54619

   ### What changes were proposed in this pull request?
   
   Reduces `spark.cleaner.periodicGC.interval` from the default 30 minutes to 
60 seconds for `ThriftServerQueryTestSuite`.
   
   ### Why are the changes needed?
   
   `ThriftServerQueryTestSuite` runs 800+ SQL golden file tests sequentially in 
a single SparkSession over ~50 minutes. The default 30-minute periodic GC 
interval means only one GC fires during the entire run, allowing memory to 
accumulate.
   
   This causes intermittent OOM (`java.lang.OutOfMemoryError: Java heap space`) 
during memory-intensive tests like scalar subquery evaluation, with 100+ failed 
64MB page allocations. For example: 
https://github.com/apache/spark/actions/runs/22659394682/job/65676090341
   
   With 60-second intervals, GC runs ~50 times during the suite, preventing the 
memory buildup.
   
   ### Does this PR introduce _any_ user-facing change?
   
   No. Test-only change.
   
   ### How was this patch tested?
   
   Compilation verified. The change only affects test configuration.
   
   ### Was this patch authored or co-authored using generative AI tooling?
   
   Yes, co-authored with GitHub Copilot.


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