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https://issues.apache.org/jira/browse/YARN-6435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15954922#comment-15954922
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Varun Saxena commented on YARN-6435:
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bq. sorry did not get this.
I meant with current value of 1000 we would be able to print time series for
only 3 hours approx which is too less.
So I agree that it should be increased.
Yes HBase will be able to handle max versions equal to int max as well. What I
meant is that this will increase the amount of storage required. The reason max
versions were kept at only 1000 I think was due to the concern that a large
value would increase the storage space required. Which would be fine in some
clusters, may not be so in some others.
That is why put forth a suggestion that maybe we can make this configurable so
that it can be set as per cluster capacity.
I wasn't really involved in deciding default value of 1000 hence not a 100%
sure behind the intention so let us get opinion from [~vrushalic] who may have
been involved with this.
> [ATSv2] Can't retrieve more than 1000 versions of metrics in time series
> ------------------------------------------------------------------------
>
> Key: YARN-6435
> URL: https://issues.apache.org/jira/browse/YARN-6435
> Project: Hadoop YARN
> Issue Type: Bug
> Components: timelineserver
> Reporter: Rohith Sharma K S
> Assignee: Rohith Sharma K S
> Priority: Critical
> Attachments: YARN-6435.0001.patch
>
>
> It is observed that, even though *metricslimit* is set to 1500, maximum
> number of metrics values retrieved is 1000.
> This is due to, while creating EntityTable, metrics column family max version
> is specified as 1000 which is hardcoded in
> {{EntityTable#DEFAULT_METRICS_MAX_VERSIONS}}. So, HBase will return max
> version with following {{MIN(cf max version , user provided max version)}}.
> This behavior is contradicting the documentation which claims that
> {code}
> metricslimit - If specified, defines the number of metrics to return.
> Considered only if fields contains METRICS/ALL or metricstoretrieve is
> specified. Ignored otherwise. The maximum possible value for metricslimit can
> be maximum value of Integer. If it is not specified or has a value less than
> 1, and metrics have to be retrieved, then metricslimit will be considered as
> 1 i.e. latest single value of metric(s) will be returned.
> {code}
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