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https://issues.apache.org/jira/browse/FLINK-8145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16287554#comment-16287554
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Chesnay Schepler commented on FLINK-8145:
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1.4: b8f1744b54c10968a5a8cabf9d461346ccf1b586
> IOManagerAsync not properly shut down in various tests
> ------------------------------------------------------
>
> Key: FLINK-8145
> URL: https://issues.apache.org/jira/browse/FLINK-8145
> Project: Flink
> Issue Type: Bug
> Components: Tests
> Affects Versions: 1.4.0, 1.5.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Fix For: 1.4.1
>
>
> In various tests, e.g. {{AsynchronousBufferFileWriterTest}},
> {{BufferFileWriterReaderTest}}, or {{HashTableITCase}}, {{IOManagerAsync}}
> instances are used which are not shut down at all. The only thing cleaning
> them up seems to be a shutdown handler attached to the JVM. Since each
> {{IOManagerAsync}} is spawning a number of reader and writer threads, this
> may put a significant burden on the tests.
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