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https://issues.apache.org/jira/browse/YARN-4178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14804444#comment-14804444
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Li Lu commented on YARN-4178:
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We can rely on ApplicationId class in YARN api to fix this, right? As
encapsulated in {{TimelineCollectorContext}}, shall we change the appID part
into an ApplicationId typed object, and have an internal method to convert an
ApplicationId to bytes for HBase storage? I suspect this is a whole flow change
if we want to use ApplicationId in TimelineCollectorContext. Let's try not to
break ongoing patches for this change.
> [storage implementation] app id as string 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
>
> Currently the app id is used in various places as part of row keys and in
> column names. However, they are treated as strings for the most part. 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_100" will be considered *earlier* than
> "app_1234567890_99". We should correct this.
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