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https://issues.apache.org/jira/browse/HIVE-19902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16537299#comment-16537299
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Alexander Kolbasov commented on HIVE-19902:
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Some comment on JMH. I experimented with JMH initially and found it not very
useful for the kind of testing that we want to do. Here are some reasons:
* A typical test does something like
** Create object (time not measured)
** Drop object (time measured)
JMS doesn't support such use case where we want to do pre- and post- test for
each iteration. Also it has complete control over output formatting. Here I
just collect raw data and use Java's DescriptiveStatistics to do all the stats.
Another problem with JMH is that it starts new JVM for a test so it is very
difficult to pass down any information from main to the test.
> Provide Metastore micro-benchmarks
> ----------------------------------
>
> Key: HIVE-19902
> URL: https://issues.apache.org/jira/browse/HIVE-19902
> Project: Hive
> Issue Type: Improvement
> Components: Standalone Metastore
> Affects Versions: 3.1.0, 4.0.0
> Reporter: Alexander Kolbasov
> Assignee: Alexander Kolbasov
> Priority: Major
> Attachments: HIVE-19902.01.patch, HIVE-19902.02.patch,
> HIVE-19902.03.patch
>
>
> It would be very useful to have metastore benchmarks to be able to track perf
> issues.
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