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Posted to issues@spark.apache.org by "Sean R. Owen (Jira)" <ji...@apache.org> on 2021/09/26 00:58:00 UTC
[jira] [Commented] (SPARK-36584) ExecutorMonitor#onBlockUpdated
will receive event from driver
[ https://issues.apache.org/jira/browse/SPARK-36584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17420171#comment-17420171 ]
Sean R. Owen commented on SPARK-36584:
--------------------------------------
Maybe, but, if you're saying you don't know if it's a problem and don't have a change to suggest, not sure what to do with this.
> ExecutorMonitor#onBlockUpdated will receive event from driver
> -------------------------------------------------------------
>
> Key: SPARK-36584
> URL: https://issues.apache.org/jira/browse/SPARK-36584
> Project: Spark
> Issue Type: Question
> Components: Spark Core
> Affects Versions: 3.1.2
> Environment: Spark 3.1.2
> Reporter: 胡振宇
> Priority: Minor
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> When driver broadcast object, it will send the [SparkListenerBlockUpdated|https://github.com/apache/spark/blob/df0ec56723f0b47c3629055fa7a8c63bb4285147/core/src/main/scala/org/apache/spark/scheduler/SparkListener.scala#L228] event. [ExecutorMonitor#onBlockUpdated|https://github.com/apache/spark/blob/df0ec56723f0b47c3629055fa7a8c63bb4285147/core/src/main/scala/org/apache/spark/scheduler/dynalloc/ExecutorMonitor.scala#L380] receives and handles the event, in this method,
> it calls [ensureExecutorIsTracked|https://github.com/apache/spark/blob/df0ec56723f0b47c3629055fa7a8c63bb4285147/core/src/main/scala/org/apache/spark/scheduler/dynalloc/ExecutorMonitor.scala#L489]
> to put driver in `executors` variable with `UNKNOWN_RESOURCE_PROFILE_ID`. In my understanding, `ExecutorMonitor` should only monitor executor not driver. Although this will not cause any problems at the moment because UNKNOWN_RESOURCE_PROFILE_ID will be filtered out, but I think this is a potential risk
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