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https://issues.apache.org/jira/browse/YARN-1701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13923658#comment-13923658
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Zhijie Shen commented on YARN-1701:
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bq. I agree the configuration needs to be simple. So let's definitely change
the store. Specially given we also have a flag to enable/disable it.
In YARN-1749, we've already integrate the store config of RM and AHS into one,
and use the filesystem store as default.
bq. I actually think we should change all other defaults which point to
hadoop.log.dir. hadoop.log.dir clearly hints to a local file-system path, in
all of Hadoop. We have historically used /tmp paths as default in Hadoop.
How about using this ticket to inclusively fix the default path of FS
rmstatestore, FS historystore and Leveldb timelinestore?
> 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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