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From "Anubhav Dhoot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6353) Divide by zero error in MR AM when calculating available containers
Date Sat, 09 May 2015 23:42:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14536952#comment-14536952
] 

Anubhav Dhoot commented on MAPREDUCE-6353:
------------------------------------------

Thanks [~kasha] for review and commit!



> Divide by zero error in MR AM when calculating available containers
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6353
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6353
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mr-am
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>             Fix For: 2.8.0
>
>         Attachments: MAPREDUCE-6353.001.patch, MAPREDUCE-6353.002.patch, MAPREDUCE-6353.002.patch
>
>
> When running a sleep job with zero CPU vcores i see the following exception
> 2015-04-30 06:41:06,954 ERROR [RMCommunicator Allocator] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator:
ERROR IN CONTACTING RM. 
> java.lang.ArithmeticException: / by zero
> at org.apache.hadoop.mapreduce.v2.app.rm.ResourceCalculatorUtils.computeAvailableContainers(ResourceCalculatorUtils.java:38)
> at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.assign(RMContainerAllocator.java:947)
> at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.access$200(RMContainerAllocator.java:840)
> at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.heartbeat(RMContainerAllocator.java:247)
> at org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator$1.run(RMCommunicator.java:282)
> at java.lang.Thread.run(Thread.java:745)



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