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Posted to issues@spark.apache.org by "Shixiong Zhu (JIRA)" <ji...@apache.org> on 2019/04/02 18:36:00 UTC

[jira] [Created] (SPARK-27348) HeartbeatReceiver doesn't remove lost executors from CoarseGrainedSchedulerBackend

Shixiong Zhu created SPARK-27348:
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             Summary: HeartbeatReceiver doesn't remove lost executors from CoarseGrainedSchedulerBackend
                 Key: SPARK-27348
                 URL: https://issues.apache.org/jira/browse/SPARK-27348
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 2.4.0
            Reporter: Shixiong Zhu


When a heartbeat timeout happens in HeartbeatReceiver, it doesn't remove lost executors from CoarseGrainedSchedulerBackend. When a connection is gracefully shut down, CoarseGrainedSchedulerBackend will not receive a disconnect event. In this case, CoarseGrainedSchedulerBackend still thinks a lost executor is still alive. CoarseGrainedSchedulerBackend may ask TaskScheduler to run tasks on this lost executor. This task will never finish and the job will hang forever.



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