Github user zhpengg commented on a diff in the pull request: https://github.com/apache/spark/pull/4909#discussion_r26013467 --- Diff: core/src/main/scala/org/apache/spark/deploy/master/Master.scala --- @@ -467,7 +467,9 @@ private[spark] class Master( * two executors on the same worker). */ def canUse(app: ApplicationInfo, worker: WorkerInfo): Boolean = { - worker.memoryFree >= app.desc.memoryPerSlave && !worker.hasExecutor(app) + worker.memoryFree >= app.desc.memoryPerSlave && + !worker.hasExecutor(app) && + !app.removedExecutors.exists(_.worker == worker) --- End diff -- Yes, for long running applications, this will be a problem. I will re-implement it with TTL. Thanks @mateiz @markhamstra .
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