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https://issues.apache.org/jira/browse/SOLR-10023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15838519#comment-15838519
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Mark Miller commented on SOLR-10023:
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bq. If you want speed, you should run individual tests from the module that
contains them
We should almost fail single test running from a higher level and tell the dev
to do this then - would not have guessed it would make so much difference. I'll
give that a try.
bq. Looks like the recursion is doing things over and over again.
Probably not so easy to fix sadly. I found that if you remove the test call
depends on compile and just run the precompiled test, I could go from 2 minutes
40 seconds to about 40 seconds of build time.
> Improve single unit test run time with ant.
> -------------------------------------------
>
> Key: SOLR-10023
> URL: https://issues.apache.org/jira/browse/SOLR-10023
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Tests
> Reporter: Mark Miller
> Attachments: stdout.tar.gz
>
>
> It seems to take 2 minutes and 45 seconds to run a single test with the
> latest build design and the test itself is only 4 seconds. I've noticed this
> for a long time, and it seems because ant is running through a billion
> targets first.
> I haven't checked yet, so maybe it's a Solr specific issue? I'll check with
> Lucene and move this issue if necessary.
> There is hopefully something we can do to improve this though. At least we
> should try and get some sharp minds to take first / second look. If I did not
> use an IDE so much to run tests, this would drive me nuts.
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