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https://issues.apache.org/jira/browse/SPARK-6050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14340968#comment-14340968
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Thomas Graves commented on SPARK-6050:
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Note that there is one other problem Mridul reported in this jira and perhaps
we should split this into another jira unless [~vanzin] thinks the pr fixes it
also:
So the scenario is like this.
Suppose we asked for 10 workers, RM gave us say 12 - but we decided to use only
6 (in this example, we used 0 due to vCores constraints).
Now, we still need 4 workers more - but we will never ask for it again from RM.
> Spark on YARN does not work --executor-cores is specified
> ---------------------------------------------------------
>
> Key: SPARK-6050
> URL: https://issues.apache.org/jira/browse/SPARK-6050
> Project: Spark
> Issue Type: Bug
> Components: YARN
> Affects Versions: 1.3.0
> Environment: 2.5 based YARN cluster.
> Reporter: Mridul Muralidharan
> Priority: Blocker
>
> There are multiple issues here (which I will detail as comments), but to
> reproduce running the following ALWAYS hangs in our cluster with the 1.3 RC
> ./bin/spark-submit --class org.apache.spark.examples.SparkPi --master
> yarn-cluster --executor-cores 8 --num-executors 15 --driver-memory 4g
> --executor-memory 2g --queue webmap lib/spark-examples*.jar
> 10
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