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[SPARK-15262] Synchronize block manager / scheduler executor state #13055

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[SPARK-15262] Synchronize block manager / scheduler executor state #13055

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Try to synchronize scheduler and BM state
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Andrew Or committed May 11, 2016
commit c03767f2c122dbc588ae3e0fbad30f01b44a8a19
9 changes: 8 additions & 1 deletion core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -289,7 +289,14 @@ class CoarseGrainedSchedulerBackend(scheduler: TaskSchedulerImpl, val rpcEnv: Rp
scheduler.executorLost(executorId, if (killed) ExecutorKilled else reason)
listenerBus.post(
SparkListenerExecutorRemoved(System.currentTimeMillis(), executorId, reason.toString))
case None => logInfo(s"Asked to remove non-existent executor $executorId")
case None =>
// SPARK-15262: If an executor is still alive even after the scheduler has removed
// its metadata, we may receive a heartbeat from that executor and tell its block
// manager to reregister itself. If that happens, the block manager master will know
// about the executor, but the scheduler will not. Therefore, we should remove the
// executor from the block manager when we hit this case.
scheduler.sc.env.blockManager.master.removeExecutor(executorId)
logInfo(s"Asked to remove non-existent executor $executorId")
}
}

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