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https://issues.apache.org/jira/browse/YARN-3863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15181321#comment-15181321
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Sangjin Lee commented on YARN-3863:
-----------------------------------
We spoke offline, but I wanted to mention that we resolved the discussion around
{quote}
One high level question: am I correct in understanding that if a relations
filter is specified for example but relation was not specified as part of
fields to retrieve, we would try to fetch the relation? So, in a sense, would
specifying a filter override/modify the fields to retrieve behavior? If so, how
much additional complexity is added by trying to support that behavior? What if
we simply reject or ignore the filters if they do not match the fields to
retrieve? Would it make the implementation simpler or harder? To me, supporting
more contents even if the filters and the fields to retrieve are not consistent
seems very much optional, and I'm not sure if it is worth it especially if it
adds a lot more complexity. What do you think?
{quote}
I think the behavior that's being proposed by the current patch is reasonable,
and that there are use cases where it makes sense to treat the filters
separately from the contents that are returned.
> Support complex filters in TimelineReader
> -----------------------------------------
>
> Key: YARN-3863
> URL: https://issues.apache.org/jira/browse/YARN-3863
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: YARN-2928
> Reporter: Varun Saxena
> Assignee: Varun Saxena
> Labels: yarn-2928-1st-milestone
> Attachments: YARN-3863-YARN-2928.v2.01.patch,
> YARN-3863-YARN-2928.v2.02.patch, YARN-3863-YARN-2928.v2.03.patch,
> YARN-3863-feature-YARN-2928.wip.003.patch,
> YARN-3863-feature-YARN-2928.wip.01.patch,
> YARN-3863-feature-YARN-2928.wip.02.patch,
> YARN-3863-feature-YARN-2928.wip.04.patch,
> YARN-3863-feature-YARN-2928.wip.05.patch
>
>
> Currently filters in timeline reader will return an entity only if all the
> filter conditions hold true i.e. only AND operation is supported. We can
> support OR operation for the filters as well. Additionally as primary backend
> implementation is HBase, we can design our filters in a manner, where they
> closely resemble HBase Filters.
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