[jira] [Created] (IMPALA-14690) Output information about JVM heap users when seeing high garbage collection time

["Joe McDonnell (Jira)" <ji...@apache.org>]

Joe McDonnell created IMPALA-14690:
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             Summary: Output information about JVM heap users when seeing high garbage collection time
                 Key: IMPALA-14690
                 URL: https://issues.apache.org/jira/browse/IMPALA-14690
             Project: IMPALA
          Issue Type: Improvement
          Components: Frontend
    Affects Versions: Impala 4.5.0
            Reporter: Joe McDonnell


If Impala sees high garbage collection time like this:
{code:java}
W20260107 14:01:00.749766   124 JvmPauseMonitor.java:205] Detected pause in JVM or host machine (eg GC): pause of approximately 67709ms
GC pool 'ConcurrentMarkSweep' had collection(s): count=1 time=68141ms {code}
With high usage, these pauses can persist for quite some time, debilitating performance. We should print out information to the log about things taking up large amounts of JVM heap space (e.g. large tables, etc) to aid debugging.



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