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https://issues.apache.org/jira/browse/ACCUMULO-2429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13921036#comment-13921036
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Bill Havanki commented on ACCUMULO-2429:
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Good question. I had expected so, but 1.4 and 1.5 use older versions of JLine
(0.9.94 and 1.0, respectively) that don't have the thread / shutdown feature. I
expect they are OK.
> Shell does not clean up JLine ConsoleReader, leaks threads
> ----------------------------------------------------------
>
> Key: ACCUMULO-2429
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2429
> Project: Accumulo
> Issue Type: Bug
> Components: shell
> Reporter: Bill Havanki
> Assignee: Bill Havanki
> Labels: memory-leak, shell, threads
> Fix For: 1.6.0, 1.7.0
>
>
> The shell uses the JLine {{ConsoleReader}} class. That class spawns a thread
> on construction (tsk-tsk) for its internal non-blocking input stream
> representation. If the {{ConsoleReader}} is not shut down properly, the
> thread keeps running. This is particularly a problem when running
> {{ShellServerIT}} under 1.6 and later; the JVM can run out of memory to
> allocate threads and fail the test.
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