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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4178) [storage implementation] app id as string in row keys can cause incorrect ordering
Date Mon, 05 Oct 2015 06:38:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-4178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14942973#comment-14942973

Varun Saxena commented on YARN-4178:

bq. To that effect, if you’d like, we can rename TimelineWriterUtils to TimelineStorageUtils
so that both reader and writer can use functions from this. 
Also,let’s have the invert(long) and invert(int) functions in the same util class, instead
of adding in a new util class.
I think we can have a single class TimelineStorageUtils and remove TimelineWriterUtils and

> [storage implementation] app id as string in row keys can cause incorrect ordering
> ----------------------------------------------------------------------------------
>                 Key: YARN-4178
>                 URL: https://issues.apache.org/jira/browse/YARN-4178
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Sangjin Lee
>            Assignee: Varun Saxena
>         Attachments: YARN-4178-YARN-2928.01.patch, YARN-4178-YARN-2928.02.patch
> Currently the app id is used in various places as part of row keys. However, currently
they are treated as strings. This will cause a problem with ordering when the id portion of
the app id rolls over to the next digit.
> For example, "app_1234567890_10000" will be considered *earlier* than "app_1234567890_9999".
We should correct this.

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