[jira] [Commented] (BIGTOP-852) Improve HDFS helper script

["Konstantin Boudnik (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BIGTOP-852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13583440#comment-13583440 ] 

Konstantin Boudnik commented on BIGTOP-852:
-------------------------------------------

Here are few points to start with:
- Do not create user 'jenkins' in the package: we shouldn't shape the file system this way for a user without knowing the use case.
- lose shell-outs: use groovy script to directly call in file system API for the meta and check operations. You will speed it up for about 300% easily
- the script in the current way doesn't solve the lack of YARN-required directories. Hence, you won't be able to use HDFS shaped in this way to run MR jobs. In fact, nodemanager won't even start. The original patch https://issues.apache.org/jira/secure/attachment/12569655/BIGTOP-637.patch has all the details.
                
> Improve HDFS helper script
> --------------------------
>
>                 Key: BIGTOP-852
>                 URL: https://issues.apache.org/jira/browse/BIGTOP-852
>             Project: Bigtop
>          Issue Type: Bug
>          Components: Deployment
>    Affects Versions: 0.6.0
>            Reporter: Mark Grover
>             Fix For: 0.6.0
>
>
> There are a few things that can be improved regarding the HDFS helper script introduced by BIGTOP-547. Some of these issues have been discussed in BIGTOP-637.
> 1. The script seems to create user directories for users "root" and "jenkins" but not the current user running the script. I think it will be a good idea to add in the script the commands to create the /user/$USER directory in HDFS. Of course, we should be careful in case the user running the command is root or jenkins, in that case a simple mkdir command would throw error given that those directories already exist.
> 2. The script uses sudo which requires login shell. However, login shells are not available for certain use cases like init scripts. Consequently, we should consider using su instead.
> 3. Look into how the helper script can be made faster
> Folks, please feel free to add/edit if there is something I missed.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira