abhishekagarwal87 commented on issue #12701:
URL: https://github.com/apache/druid/issues/12701#issuecomment-1193144236
@AmatyaAvadhanula - How will 2) help here?
@pchang388 - To me, the metadata store seems to be the culprit. If you
filter the `qtp*` threads in the overlord flame graph, you can see that threads
are either
- blocked on a lock
- waiting for a DB operation to finish (which this DB operation is running,
the thread holds the lock that blocks other threads).
I was thinking that DB operations are slower because of the high scale. That
doesn't seem to be the case here. You can also look at `task/action/run/time`
metric that druid emits. That shouldn't be too high.
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