Varun Saxena commented on YARN-2748:

bq. To differentiate log files which may have same file names(due to 
subfolders), I think we can write file path relative to container log directory 
instead. Your views on this. 
bq. Given Log Root Dir/sub-dir1/sub-dir2/.../xxxx.log, we can use the relative 
path sub-dir1/sub-dir2/.../xxxx.log to uniquely identify a log.
[~zjshen], latest patch uses relative path to identify log in aggregated log 
file. Kindly review.

> Upload logs in the sub-folders under the local log dir when aggregating logs
> ----------------------------------------------------------------------------
>                 Key: YARN-2748
>                 URL: https://issues.apache.org/jira/browse/YARN-2748
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: log-aggregation
>    Affects Versions: 2.6.0
>            Reporter: Zhijie Shen
>            Assignee: Varun Saxena
>         Attachments: YARN-2748.001.patch, YARN-2748.002.patch
> YARN-2734 has a temporal fix to skip sub folders to avoid exception. Ideally, 
> if the app is creating a sub folder and putting its rolling logs there, we 
> need to upload these logs as well.

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