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https://issues.apache.org/jira/browse/SPARK-16630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16427377#comment-16427377
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Thomas Graves commented on SPARK-16630:
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the problem is that spark.executor.instances (or dynamic allocation) doesn't
necessarily represent the # of nodes in the cluster, especially if you look at
dynamic allocation. Depending on the size of your nodes you can have a lot
more executors then nodes, thus it could easily end up blacklisting the entire
cluster. I would rather look at the actual # of nodes in the cluster. Is that
turning out to be hard?
> Blacklist a node if executors won't launch on it.
> -------------------------------------------------
>
> Key: SPARK-16630
> URL: https://issues.apache.org/jira/browse/SPARK-16630
> Project: Spark
> Issue Type: Improvement
> Components: YARN
> Affects Versions: 1.6.2
> Reporter: Thomas Graves
> Priority: Major
>
> On YARN, its possible that a node is messed or misconfigured such that a
> container won't launch on it. For instance if the Spark external shuffle
> handler didn't get loaded on it , maybe its just some other hardware issue or
> hadoop configuration issue.
> It would be nice we could recognize this happening and stop trying to launch
> executors on it since that could end up causing us to hit our max number of
> executor failures and then kill the job.
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