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https://issues.apache.org/jira/browse/YARN-5739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15675199#comment-15675199
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Vrushali C commented on YARN-5739:
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Thanks [~gtCarrera9] for the patch.
[~varun_saxena] I think we do need both FirstKeyOnlyFilter as well as
KeyOnlyFilter both for this case.
I think we should not be setting PageFilter to 1. This filter is used to limit
the number of results to a specific page size. So it will terminate the
scanning once the number of filter-passed rows is > the given page size on that
particular Region Server.
At line 100 in HBaseTimelineReaderImpl, do we need that warning? Or should be
just a debug/info message? Is it an error if we see the same entity type again?
> Provide timeline reader API to list available timeline entity types for one
> application
> ---------------------------------------------------------------------------------------
>
> Key: YARN-5739
> URL: https://issues.apache.org/jira/browse/YARN-5739
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelinereader
> Reporter: Li Lu
> Assignee: Li Lu
> Attachments: YARN-5739-YARN-5355.001.patch,
> YARN-5739-YARN-5355.002.patch
>
>
> Right now we only show a part of available timeline entity data in the new
> YARN UI. However, some data (especially library specific data) are not
> possible to be queried out by the web UI. It will be appealing for the UI to
> provide an "entity browser" for each YARN application. Actually, simply
> dumping out available timeline entities (with proper pagination, of course)
> would be pretty helpful for UI users.
> On timeline side, we're not far away from this goal. Right now I believe the
> only thing missing is to list all available entity types within one
> application. The challenge here is that we're not storing this data for each
> application, but given this kind of call is relatively rare (compare to
> writes and updates) we can perform some scanning during the read time.
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