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<a class="user-hover" rel="rramillien" id="email_rramillien" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=rramillien" style="color:#326ca6;">Régis Ramillien</a>
created <img src="http://jira.qos.ch/images/icons/issuetypes/bug.png" height="16" width="16" border="0" align="absmiddle" alt="Bug"> <a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-973'>LOGBACK-973</a>
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<a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-973'><strong>PermGen with orphan async appenders</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/bug.png" height="16" width="16" border="0" align="absmiddle" alt="Bug"> Bug
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<strong style="font-weight:normal;color:#505050;">Affects Versions:</strong>
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1.1.2 </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;">Attachments:</strong>
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logback_issue.zip </td>
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<strong style="font-weight:normal;color:#505050;">Components:</strong>
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<strong style="font-weight:normal;color:#505050;">Created:</strong>
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11/Apr/14 2:51 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;'>Hello,</p>
<p style='margin-top:0;margin-bottom:10px;'>When defining a AsyncAppender in a logback.xml file, if this appender is not used by any logger, it will not be unloaded and then will cause permGen space out of memory.</p>
<p style='margin-top:0;margin-bottom:10px;'>This happens on a web app undeploy/redeploy for my particular case.</p>
<p style='margin-top:0;margin-bottom:10px;'>I attached 2 configuration files and 2 screenshots to this issue as well as the code I use to free memory, for you to understand what happens.</p>
<p style='margin-top:0;margin-bottom:10px;'>If you look at the code, you will see that I free only logger contexts, so it explains why the async appender is not freed. But I don't know yet how to get appenders which are not attached to a logger.</p>
<p style='margin-top:0;margin-bottom:10px;'>There is something strange, a orphan AsyncAppender produces this behavior. An orphan RollingFileAppender does not produces it... Perhaps it is caused by the thread created by the Async one ?</p>
<p style='margin-top:0;margin-bottom:10px;'>So, IMHO, either:</p>
<ul class="alternate" type="square">
<li>I missed something, and please tell me how to correct it...</li>
<li>The "orphan" appenders should not be initialized on logback startup.</li>
<li>You could add a "deinitializer" class to handle this issue for everyone.</li>
</ul>
<p style='margin-top:0;margin-bottom:10px;'>Another thing, I added my own listener because the ContextDetachingSCL works only with JNDI, is it really the intended behavior ?</p>
<p style='margin-top:0;margin-bottom:10px;'>Best regards,</p>
<p style='margin-top:0;margin-bottom:10px;'>(And good job for logback <img class="emoticon" src="http://jira.qos.ch/images/icons/emoticons/wink.gif" height="20" width="20" align="absmiddle" alt="" border="0"/> )</p>
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<strong style="font-weight:normal;color:#505050;">Environment:</strong>
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<p style='margin-top:0;margin-bottom:10px;'>Java 7, Tomcat 7, Windows, Linux</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="rramillien" id="email_rramillien" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=rramillien" style="color:#326ca6;">Régis Ramillien</a>
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