tangjunjie commented on YARN-2902:

I encounter   this issue。

Enviroment: hadoop 2.3.0-cdh5.0.2

2015-08-05 12:11:18,275 ERROR 
 Attempt to remove resource: { { 
 1436271746726, FILE, null },pending,[],1624036313203834,DOWNLOADING} with 
non-zero refcount /var/log/hadoop-yarn/hadoop-cmf-yarn-NODEMANAG

> Killing a container that is localizing can orphan resources in the 
> ------------------------------------------------------------------------------------
>                 Key: YARN-2902
>                 URL: https://issues.apache.org/jira/browse/YARN-2902
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 2.5.0
>            Reporter: Jason Lowe
>            Assignee: Varun Saxena
>         Attachments: YARN-2902.002.patch, YARN-2902.03.patch, 
> YARN-2902.04.patch, YARN-2902.patch
> If a container is in the process of localizing when it is stopped/killed then 
> resources are left in the DOWNLOADING state.  If no other container comes 
> along and requests these resources they linger around with no reference 
> counts but aren't cleaned up during normal cache cleanup scans since it will 
> never delete resources in the DOWNLOADING state even if their reference count 
> is zero.

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