[jira] [Created] (LUCENE-8203) Windows failures when removing test directories

["Adrien Grand (JIRA)" <ji...@apache.org>]

Adrien Grand created LUCENE-8203:
------------------------------------

             Summary: Windows failures when removing test directories
                 Key: LUCENE-8203
                 URL: https://issues.apache.org/jira/browse/LUCENE-8203
             Project: Lucene - Core
          Issue Type: Test
            Reporter: Adrien Grand


I was looking at Lucene failures of Policeman Jenkins' Windows job (https://jenkins.thetaphi.de/job/Lucene-Solr-master-Windows) and they all fail  when cleaning up temporary files/dirs used for testing, eg.

```
[junit4] ERROR   0.00s J1 | TestBoolean2 (suite) <<<
   [junit4]    > Throwable #1: java.io.IOException: Could not remove the following files (in the order of attempts):
   [junit4]    >    C:\Users\jenkins\workspace\Lucene-Solr-master-Windows\lucene\build\core\test\J1\temp\lucene.search.TestBoolean2_B7B1F66EB9785AE1-001\tempDir-001: java.nio.file.AccessDeniedException: C:\Users\jenkins\workspace\Lucene-Solr-master-Windows\lucene\build\core\test\J1\temp\lucene.search.TestBoolean2_B7B1F66EB9785AE1-001\tempDir-001
   [junit4]    >    C:\Users\jenkins\workspace\Lucene-Solr-master-Windows\lucene\build\core\test\J1\temp\lucene.search.TestBoolean2_B7B1F66EB9785AE1-001: java.nio.file.DirectoryNotEmptyException: C:\Users\jenkins\workspace\Lucene-Solr-master-Windows\lucene\build\core\test\J1\temp\lucene.search.TestBoolean2_B7B1F66EB9785AE1-001
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([B7B1F66EB9785AE1]:0)
   [junit4]    > 	at org.apache.lucene.util.IOUtils.rm(IOUtils.java:329)
   [junit4]    > 	at java.lang.Thread.run(Thread.java:748)
```

Has anyone ideas what the problem is? At first sight it looks:
 - not due to unclosed index inputs or MockDirectoryWrapper would barf too
 - not related to the unmap hack since we have failures on tests that do not use MmapDirectory at all like TestNIOFSDirectory
 - not due to the fact that we do not release resources in a try/finally or try-with-resources block or junit would report the exception that prevented the dir/input from being closed as well

It's also surprising how it sometimes fails with a DirectoryNotEmptyException without reporting issues about deleting inner files of the directory.

I don't have much background on this issue so I could easily have missed something.



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