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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HADOOP-1189) Still seeing some unexpected 'No space left on device' exceptions
Date Sat, 31 Mar 2007 03:20:25 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Raghu Angadi reassigned HADOOP-1189:
------------------------------------

    Assignee: Raghu Angadi

> Still seeing some unexpected 'No space left on device' exceptions
> -----------------------------------------------------------------
>
>                 Key: HADOOP-1189
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1189
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.12.2
>            Reporter: Raghu Angadi
>         Assigned To: Raghu Angadi
>             Fix For: 0.13.0
>
>
> One of the datanodes has one full partition (disk) out of four. Expected behaviour is
that datanode should skip this partition and use only the other three. HADOOP-990 fixed some
bugs related to this. It seems to work ok but some exceptions are still seeping through. In
one case there 33 of these out 1200+ blocks written to this node. Not sure what caused this.
I will submit a patch to the prints a more useful message throw the original exception.
> Two unlikely reasons I can think of are 2% reserve space (8GB in this case) is not enough
or client some how still says block size is zero in some cases. Better error message should
help here.
> If you see small number of these exceptions compared to number of blocks written, for
now you don't need change anything.

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