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https://issues.apache.org/jira/browse/KAFKA-1258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13898307#comment-13898307
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Jay Kreps commented on KAFKA-1258:
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Yeah this annoys me too. The core problem is that java provides
File.deleteOnExit but this doesn't work for directories. Instead what we should
do is change TestUtils.createTempDir to add a shutdown hook that deletes the
directory recursively.
> Delete temporary data directory after unit test finishes
> --------------------------------------------------------
>
> Key: KAFKA-1258
> URL: https://issues.apache.org/jira/browse/KAFKA-1258
> Project: Kafka
> Issue Type: Bug
> Reporter: Guozhang Wang
> Fix For: 0.9.0
>
>
> Today in unit testsuite most of the time when a test case is setup a
> temporary directory will be created with a random int as suffix, and will not
> be deleted after the test. After a few unit tests this will create tons of
> directories in java.io.tmpdir (/tmp for Linux). Would be better to remove
> them for clean unit tests.
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