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Posted to commits@pinot.apache.org by GitBox <gi...@apache.org> on 2020/09/02 18:42:20 UTC

[GitHub] [incubator-pinot] jackjlli commented on issue #5960: LLC stopped realtime ingestion due to deadlock caused by out of order Helix state transition events (Pinot 0.4+)

jackjlli commented on issue #5960:
URL: https://github.com/apache/incubator-pinot/issues/5960#issuecomment-685926055


   The default pool size for HelixTaskExecutor shouldn't be just 1. I checked the Helix code and the default value is 40:
   https://github.com/apache/helix/blob/78f6c8beaf05302703809dd7de231605ff4d74a3/helix-core/src/main/java/org/apache/helix/messaging/handling/HelixTaskExecutor.java#L115
   Please adjust the `STATE_TRANSITION.maxThreads` in `CONFIGS/CLUSTER/pinot` ZNode and restart all the pinot components sequentially to correctly pick up your new setting.
   


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