mcvsubbu commented on issue #4626: Low level realtime consumer (LLC) got into ERROR state due to thread race condition. URL: https://github.com/apache/incubator-pinot/issues/4626#issuecomment-533689406 Excellent analysis, @chenboat . Acknowledged that we have a race condition here. We need to look around after getting the semaphore whether the operation is still worth going through. A corner case, but we need to handle it. Do you have a feel of why we were waiting so long for the semaphore? The number of parallel builds allowed can be increased. I wonder what value you have it set to. How many consuming segments do you have in the same host? Are you building large segments? Is it time to spread these partitions around? I am wondering if there will be performance issues anyway due to too many segments being present in the same host.
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