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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1701) More intuitive defaults for AHS
Date Mon, 10 Feb 2014 09:23:19 GMT

    [ https://issues.apache.org/jira/browse/YARN-1701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13896345#comment-13896345
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Zhijie Shen commented on YARN-1701:
-----------------------------------

Hm... Now I understand your problem. I used to think AHS was unable to write into HDFS on
your machine.

W.R.T the default path, the convention across xxxx-default.xml is have some ${xxx.dir} prefix.
What bothers you here is what you have in HADOOP_LOG_DIR is the default location in HDFS for
history files. However, it's not wrong. If HADOOP_LOG_DIR=/tmp on your machine, you might
be more comfortable with the path. right? Anyway, you can change the path to whatever makes
sense to you.

> More intuitive defaults for AHS
> -------------------------------
>
>                 Key: YARN-1701
>                 URL: https://issues.apache.org/jira/browse/YARN-1701
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 2.4.0
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>         Attachments: YARN-1701.v01.patch
>
>
> When I enable AHS via yarn.ahs.enabled, the app history is still not visible in AHS webUI.
This is due to NullApplicationHistoryStore as yarn.resourcemanager.history-writer.class. It
would be good to have just one key to enable basic functionality.
> yarn.ahs.fs-history-store.uri uses {code}${hadoop.log.dir}{code}, which is local file
system location. However, FileSystemApplicationHistoryStore uses DFS by default.  



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