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From Zhijie Shen <zs...@hortonworks.com>
Subject Re: task is still running on node has no disk space
Date Mon, 31 Mar 2014 05:45:02 GMT
Hi Anfernee,

In 2.2, LocalDirsHandlerService doesn't check whether the disk is full or
not. It seem that disk fullness check will be available in 2.4: YARN-1781

- Zhijie

On Sun, Mar 30, 2014 at 10:33 AM, Anfernee Xu <anfernee.xu@gmail.com> wrote:

>  Hi,
> I'm running 2.2.0 clusters, my application is pretty disk I/O
> expensive(processing huge zip files), overtime I found some job failure due
> to "no space on disk", normally the leftover files can be cleaned, but for
> some reason if they're not, I expect no more new task can run on this node,
> but in fact I still can see new tasks are coming to that node and keep
> failing. My application will write data to /tmp(where may cause out of disk
> space), so I can configure below properties:
> <property>
>      <name>yarn.nodemanager.local-dirs</name>
>      <value>
>                  /scratch/usr/software/hadoop2/hadoop-dc/temp/nm-local-dir,
>                 /tmp/nm-local-dir
>      </value>
>    </property>
>   <property>
>      <name>yarn.nodemanager.disk-health-checker.min-healthy-disks</name>
>      <value>1.0</value>
>    </property>
> As I have /tmp/nm-local-dir as part of $yarn.nodemanager.local-dirs, based
> on doc
> yarn.nodemanager.disk-health-checker.min-healthy-disks:
> The minimum fraction of number of disks to be healthy for the nodemanager
> to launch new containers. This correspond to both
> yarn-nodemanager.local-dirs and yarn.nodemanager.log-dirs. i.e. If there
> are less number of healthy local-dirs (or log-dirs) available, then new
> containers will not be launched on this node.
> Did I miss anything?
> --
> --Anfernee

Zhijie Shen
Hortonworks Inc.

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