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From "Andrew Onischuk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-22637) Fix misuses of os.path.dirname(path) in yarn.py
Date Mon, 18 Dec 2017 11:30:00 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-22637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16294839#comment-16294839
] 

Andrew Onischuk commented on AMBARI-22637:
------------------------------------------

Nice find. +1

> Fix misuses of os.path.dirname(path) in yarn.py
> -----------------------------------------------
>
>                 Key: AMBARI-22637
>                 URL: https://issues.apache.org/jira/browse/AMBARI-22637
>             Project: Ambari
>          Issue Type: Sub-task
>          Components: ambari-server
>            Reporter: Akira Ajisaka
>            Assignee: Akira Ajisaka
>         Attachments: AMBARI-22637.001.patch
>
>
> As I written in AMBARI-22632, yarn.py wrongly sets 755 permission to '/ats/done' and
'/ats/active' by default. This is because the default value of yarn.timeline-service.entity-group-fs-store.done-dir
is '/ats/done/' and the default value of yarn.timeline-service.entity-group-fs-store.active-dir
is '/ats/active/', and both of the default value have trailing '/'.
> Next yarn.py sets 700 permission to the directories, so finally the permissions become
correct.
> This issue causes redundant WebHDFS calls every time when launching ATS.



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