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https://issues.apache.org/jira/browse/SPARK-6050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14340431#comment-14340431
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Thomas Graves commented on SPARK-6050:
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Ah good point. Note that 1.2 didn't always ask for 1. It asked for whatever
the user asked for but it didn't do any validation on the requests coming back.
We should basically do the same thing. If we were to change to only ask for 1
it would negate hadoop cpu scheduling which I don't want to do.
> 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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