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https://issues.apache.org/jira/browse/SOLR-13268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16778236#comment-16778236
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Erick Erickson commented on SOLR-13268:
---------------------------------------

I just did a quick scan and there are about 150 tests that are part of Solr 
that subclass LuceneTestCase.

Just to give a dimension to the problem.... On the one hand that's a lot of 
files and the process is _very_ mechanical.

On the other hand, that's a lot of files that could change how the tests run 
and have "stuff" pop out.

On the other other hand, I wonder if proper shutdown in general (and I'm 
grasping at straws) might account for some other test failures to leaked 
objects. Doubtful, but I can always hope.

I do want to look at the reproducing seeds and see if I can understand _why_ 
there's a need to shutdown. Some of the tests do not invoke a LogManager of any 
sort. Hmmm, I suppose if any class that sets up up a logger that runs as part 
of a test could account for it.

> Clean up any test failures resulting from defaulting to async logging
> ---------------------------------------------------------------------
>
>                 Key: SOLR-13268
>                 URL: https://issues.apache.org/jira/browse/SOLR-13268
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Erick Erickson
>            Assignee: Erick Erickson
>            Priority: Major
>         Attachments: SOLR-13268.patch
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> This is a catch-all for test failures due to the async logging changes. So 
> far, the I see a couple failures on JDK13 only. I'll collect a "starter set" 
> here, these are likely systemic, once the root cause is found/fixed, then 
> others are likely fixed as well.
> JDK13:
> ant test  -Dtestcase=TestJmxIntegration -Dtests.seed=54B30AC62A2D71E 
> -Dtests.multiplier=3 -Dtests.slow=true -Dtests.locale=lv-LV 
> -Dtests.timezone=Asia/Riyadh -Dtests.asserts=true -Dtests.file.encoding=UTF-8
> ant test  -Dtestcase=TestDynamicURP -Dtests.seed=54B30AC62A2D71E 
> -Dtests.multiplier=3 -Dtests.slow=true -Dtests.locale=rwk 
> -Dtests.timezone=Australia/Brisbane -Dtests.asserts=true 
> -Dtests.file.encoding=UTF-8



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