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https://issues.apache.org/jira/browse/ACCUMULO-2429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13924021#comment-13924021
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ASF subversion and git services commented on ACCUMULO-2429:
-----------------------------------------------------------
Commit 8acdf534ceb92627075a1417e61c5e14790ee9d8 in accumulo's branch
refs/heads/master from [~bhavanki]
[ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=8acdf53 ]
ACCUMULO-2429 Add shell shutdown for thread cleanup
The JLine 2 ConsoleReader used by Shell spawns a thread which should be cleaned
up when
done with the Shell. Otherwise, the thread leaks, taking up resources when the
shell is
used programmatically. This commit adds a shutdown() method to Shell for
cleaning up the
thread. This enables ShellServerIT to pass reliably and not flood the OS with
leaked
threads.
> 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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