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https://issues.apache.org/jira/browse/YARN-5105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15297316#comment-15297316
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Sangjin Lee commented on YARN-5105:
-----------------------------------
{quote}
One more thing we need to think about is behavior of fields to retrieve when we
are querying flow runs. While querying flow runs, only METRICS(and ALL) as
fields to retrieve makes sense. So what should we do if we get anything else in
fields ? Right now we ignore fields which are present in TimelineReader#Field
but do not make sense while querying flow runs.
Should we return a 400(Bad Request) here ? Or just document that we will ignore
everything other than METRICS/ALL.
FYI, for a single flow run, all metrics are returned by default.
{quote}
That's a good point. I would be in favor of returning 400 if the user specified
METRICS_TIME_SERIES for the flow run. I think we can afford to reject the
request if the user explicitly requested it.
On a related note, is it possible for users to specify both METRICS and
METRICS_TIME_SERIES for other queries? If so, I think we should reject those
requests as they are mutually exclusive. Thoughts?
> entire time series is returned for YARN container system metrics (CPU and
> memory)
> ---------------------------------------------------------------------------------
>
> Key: YARN-5105
> URL: https://issues.apache.org/jira/browse/YARN-5105
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: YARN-2928
> Reporter: Sangjin Lee
> Assignee: Varun Saxena
> Labels: yarn-2928-1st-milestone
> Attachments: YARN-5105-YARN-2928.01.patch
>
>
> I see that the entire time series of the CPU and memory metrics are returned
> for the YARN containers REST query. This has a potential of bloating the
> output big time.
> {noformat}
> "metrics": [
> {
> "type": "TIME_SERIES",
> "id": "MEMORY",
> "values":
> {
> "1463518173363": 407539712,
> "1463518170347": 407539712,
> {noformat}
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