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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4696) EntityGroupFSTimelineStore to work in the absence of an RM
Date Fri, 19 Feb 2016 22:16:18 GMT

     [ https://issues.apache.org/jira/browse/YARN-4696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated YARN-4696:
---------------------------------
    Attachment: YARN-4696-005.patch

Patch -005  (there was an -004, but I Don't think I submitted it)

# log of post, put and file save
# make close() operation robust
# scan for files skips files that exist but are 0 bytes long. That is not an error

> EntityGroupFSTimelineStore to work in the absence of an RM
> ----------------------------------------------------------
>
>                 Key: YARN-4696
>                 URL: https://issues.apache.org/jira/browse/YARN-4696
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: YARN-4696-001.patch, YARN-4696-002.patch, YARN-4696-003.patch, YARN-4696-005.patch
>
>
> {{EntityGroupFSTimelineStore}} now depends on an RM being up and running; the configuration
pointing to it. This is a new change, and impacts testing where you have historically been
able to test without an RM running.
> The sole purpose of the probe is to automatically determine if an app is running; it
falls back to "unknown" if not. If the RM connection was optional, the "unknown" codepath
could be called directly, relying on age of file as a metric of completion
> Options
> # add a flag to disable RM connect
> # skip automatically if RM not defined/set to 0.0.0.0
> # disable retries on yarn client IPC; if it fails, tag app as unknown.



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