Tao Jie commented on HDFS-13411:

This patch is quite simple, [~arpitagarwal], [~hanishakoneru] would you give it 
a quick review?

> Should log more information when FSNameSystem is locked for a long time
> -----------------------------------------------------------------------
>                 Key: HDFS-13411
>                 URL: https://issues.apache.org/jira/browse/HDFS-13411
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.8.2, 3.0.0
>            Reporter: Tao Jie
>            Assignee: Tao Jie
>            Priority: Major
>         Attachments: HDFS-13411.001.patch, HDFS-13411.002.patch
> Today when one RPC to namenode locks FSNameSystem for a long time, it would 
> print the stacktrace to the namenode log. However all we know from this log 
> is the operation name to the Namenode(such as create, delete). 
> It should print more information about the rpc call(like caller name, caller 
> ip, operation src), which blocks the namenode. So we can have a better tuning 
> to the HDFS. 

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