[jira] Commented: (MAPREDUCE-1296) Tasks fail after the first disk (/grid/0/) of all TTs reaches 100%, even though other disks still have space.

["Todd Lipcon (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790792#action_12790792 ] 

Todd Lipcon commented on MAPREDUCE-1296:
----------------------------------------

I believe this is dup with HDFS-788.

> Tasks fail after the first disk (/grid/0/) of all TTs reaches 100%, even though other disks still have space.
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1296
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1296
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/capacity-sched
>    Affects Versions: 0.20.2
>            Reporter: Iyappan Srinivasan
>
> Tasks fail after the first disk (/grid/0/) of all TTs reaches 100%, even though other disks still have space.
> In a cluster, data is distributed almost uniformly.  Disk /grid/0/ reaches 100% first, because of extra filling up of info like logs etc. After it reaches 100% tasks starts to fail with the error, 
> java.lang.Throwable: Child Error
> 	at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:516)
> Caused by: java.io.IOException: Task process exit with nonzero status of 1.
> 	at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:503)
> This happens even though the other disks are still at 80%, so still can be filled up more.
> Steps to reproduce:
> 1) Bring up  a cluster with Linux task controller.
> 2) Start filling the dfs up with data using randomwriter or teragen.
> 3) Once the first disk reaches 100%, the tasks are starting to fail.

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