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<a class="user-hover" rel="jhuxhorn" id="email_jhuxhorn" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=jhuxhorn" style="color:#326ca6;">Joern Huxhorn</a>
created <img src="http://jira.qos.ch/images/icons/issuetypes/improvement.png" height="16" width="16" border="0" align="absmiddle" alt="Improvement"> <a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-929'>LOGBACK-929</a>
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<a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-929'><strong>Some appenders prevent quitting of application if loggerContext.stop() isn't called.</strong></a>
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<strong style="font-weight:normal;color:#505050;">Issue Type:</strong>
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<img src="http://jira.qos.ch/images/icons/issuetypes/improvement.png" height="16" width="16" border="0" align="absmiddle" alt="Improvement"> Improvement
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<strong style="font-weight:normal;color:#505050;">Affects Versions:</strong>
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1.0.13 </td>
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<strong style="font-weight:normal;color:#505050;">Assignee:</strong>
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<a class="user-hover" rel="logback-dev@qos.ch" id="email_logback-dev@qos.ch" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=logback-dev%40qos.ch" style="color:#326ca6;">Logback dev list</a>
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<strong style="font-weight:normal;color:#505050;">Components:</strong>
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logback-core </td>
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<strong style="font-weight:normal;color:#505050;">Created:</strong>
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21/Nov/13 5:55 PM
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<strong style="font-weight:normal;color:#505050;">Description:</strong>
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<p style='margin-top:0;margin-bottom:10px;'>Using SocketAppender (probably others) prevents exit of a simple command line application if loggerContext.stop() isn't called explicitly.</p>
<p style='margin-top:0;margin-bottom:10px;'>Calling loggerContext.reset() without reinitializing it afterwards is not sufficient.</p>
<p style='margin-top:0;margin-bottom:10px;'>This is caused by a dangling thread pool:</p>
<p style='margin-top:0;margin-bottom:10px;'>"pool-1-thread-1" prio=5 tid=0x00007fed0a09a000 nid=0x6403 waiting on condition <span class="error">[0x0000000117aac000]</span><br/>
java.lang.Thread.State: WAITING (parking)<br/>
at sun.misc.Unsafe.park(Native Method)</p>
<ul class="alternate" type="square">
<li>parking to wait for <0x00000007aeb00528> (a java.util.concurrent.SynchronousQueue$TransferStack)<br/>
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)<br/>
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:458)<br/>
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359)<br/>
at java.util.concurrent.SynchronousQueue.take(SynchronousQueue.java:925)<br/>
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068)<br/>
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)<br/>
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)<br/>
at java.lang.Thread.run(Thread.java:744)</li>
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<p style='margin-top:0;margin-bottom:10px;'>The reason for this is that `stopExecutorService()` is not called in `reset()` of <a href="https://github.com/qos-ch/logback/blob/master/logback-core/src/main/java/ch/qos/logback/core/ContextBase.java" class="external-link">https://github.com/qos-ch/logback/blob/master/logback-core/src/main/java/ch/qos/logback/core/ContextBase.java</a></p>
<p style='margin-top:0;margin-bottom:10px;'>I wouldn't necessarily call this a bug but it's at least a bit surprising that an already removed appender is still having an influence on the behavior of the logging system.</p>
<p style='margin-top:0;margin-bottom:10px;'>This could be circumvented by using a <a href="http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ThreadFactory.html" class="external-link">http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ThreadFactory.html</a> other than `Executors.defaultThreadFactory()` for the threads of the `ExecutorService` created in <a href="https://github.com/qos-ch/logback/blob/master/logback-core/src/main/java/ch/qos/logback/core/util/ExecutorServiceUtil.java" class="external-link">https://github.com/qos-ch/logback/blob/master/logback-core/src/main/java/ch/qos/logback/core/util/ExecutorServiceUtil.java</a></p>
<p style='margin-top:0;margin-bottom:10px;'>That factory could create daemon threads instead of the current non-daemon ones and could also specify a better name than "pool-1-thread-1".</p>
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<strong style="font-weight:normal;color:#505050;">Project:</strong>
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<a style="color:#326ca6;" href="http://jira.qos.ch/browse/LOGBACK">logback</a>
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<strong style="font-weight:normal;color:#505050;">Priority:</strong>
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<img src="http://jira.qos.ch/images/icons/priorities/major.png" height="16" width="16" border="0" align="absmiddle" alt="Major"> Major
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<strong style="font-weight:normal;color:#505050;">Reporter:</strong>
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<a class="user-hover" rel="jhuxhorn" id="email_jhuxhorn" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=jhuxhorn" style="color:#326ca6;">Joern Huxhorn</a>
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