mcvsubbu commented on a change in pull request #6483:
URL: https://github.com/apache/incubator-pinot/pull/6483#discussion_r563999016
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File path:
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/realtime/PinotLLCRealtimeSegmentManager.java
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@@ -793,6 +793,27 @@ void
updateInstanceStatesForNewConsumingSegment(Map<String, Map<String, String>>
LOGGER.info("Updating segment: {} to ONLINE state",
committingSegmentName);
}
+ // There used to be a race condition in pinot (caused by heavy GC on the
controller during segment commit)
Review comment:
Last time this happened, it was caused by gc on the controller, and the
same controller waking up to complete the operation it is scheduled to do.
I could not dig up the PR since it happened (I think) when the source code
was under com.linkedin domain, but it was fixed by @jackjlli by adding a Stat
check when we update metadata for the committing segment.
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