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https://issues.apache.org/jira/browse/YARN-4179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14959442#comment-14959442
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Varun Saxena commented on YARN-4179:
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Typos in my first comment so writing it again.
bq. As I mentioned in an earlier comment, can we simply use JDK's date
formatter for this? It would be good to avoid adding a new dependency unless it
is absolutely necessary.
JAVAs' SimpleDateFormat is not thread safe. Apache commons-lang's
FastDateFormat claims to be 25% faster too. Used commons-lang3 because
commons-lang's FastDateFormat does not provide date parsing capability. If you
want to avoid adding a dependency and we have decided to use a single date
format(yyyyMMdd), I can write a custom method to do date parsing as well and
convert it into seconds since epoch.
> [reader implementation] support flow activity queries based on time
> -------------------------------------------------------------------
>
> Key: YARN-4179
> URL: https://issues.apache.org/jira/browse/YARN-4179
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: YARN-2928
> Reporter: Sangjin Lee
> Assignee: Varun Saxena
> Priority: Minor
> Attachments: YARN-4179-YARN-2928.01.patch
>
>
> This came up as part of YARN-4074 and YARN-4075.
> Currently the only query pattern that's supported on the flow activity table
> is by cluster only. But it might be useful to support queries by cluster and
> certain date or dates.
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