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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