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@media screen and (max-device-width: 480px), screen and (-webkit-min-device-pixel-ratio: 2) {
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#email-page { padding: 8px !important; }
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#email-avatar { margin: 1px 8px 8px 0 !important; padding: 0 !important; }
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<img id="email-avatar" src="http://jira.qos.ch/secure/useravatar?avatarId=10122" alt="" height="48" width="48" border="0" align="left" style="padding:0;margin: 0 16px 16px 0;" />
<div id="email-action" style="padding: 0 0 8px 0;font-size:12px;line-height:18px;">
<a class="user-hover" rel="jklap" id="email_jklap" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=jklap" style="color:#326ca6;">Jason Klapste</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-940'>LOGBACK-940</a>
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<div id="email-summary" style="font-size:16px;line-height:20px;padding:2px 0 16px 0;">
<a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-940'><strong>Sifting appender only removes stale appenders if append() is called</strong></a>
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<td id="email-gutter" style="width:64px;white-space:nowrap;"></td>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 10px 10px 0;white-space:nowrap;">
<strong style="font-weight:normal;color:#505050;">Issue Type:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<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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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
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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24/Jan/14 7:21 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;'>We have a sifting appender (example below) that has a short timeout window in addition to a filter.</p>
<p style='margin-top:0;margin-bottom:10px;'>Our issue is that the appenders created by the sifter are only being removed when stale if a logging statement makes it through the filter, and hence to SiftingAppenderBase.append().</p>
<p style='margin-top:0;margin-bottom:10px;'>As this sifter rarely allows logging statements through (our real filter is very restrictive) we sometimes have stale appenders that are open for days.</p>
<p style='margin-top:0;margin-bottom:10px;'>While we could certainly poke through the AppenderTracker every so often, what about adding optional functionality that would spin up a thread for all SiftingAppenders and at X (configurable) frequency check for, close and remove any stale appenders (such as with AbstractComponentTrackker.removeStaleComponents()).</p>
<div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent">
<pre> <appender name="trace" class="ch.qos.logback.classic.sift.SiftingAppender">
<timeout>2 minutes</timeout>
<maxAppenderCount>100</maxAppenderCount>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>INFO</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<sift>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>log.log</file>
<append>true</append>
<encoder>
<pattern>%d{MM-dd-yyyy:HH:mm:ss.SSS} [%thread] %-5level %logger{10}->%method\(\):%line r:%X{reqId} S:%X{site} U:%X{user} - %msg%n</pattern>
<immediateFlush>false</immediateFlush>
</encoder>
</appender>
</sift>
</appender>
</pre>
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<strong style="font-weight:normal;color:#505050;">Project:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<a style="color:#326ca6;" href="http://jira.qos.ch/browse/LOGBACK">logback</a>
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<strong style="font-weight:normal;color:#505050;">Labels:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
siftingAppender
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<strong style="font-weight:normal;color:#505050;">Priority:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<img src="http://jira.qos.ch/images/icons/priorities/minor.png" height="16" width="16" border="0" align="absmiddle" alt="Minor"> Minor
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<strong style="font-weight:normal;color:#505050;">Reporter:</strong>
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<td style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 10px 0;width:100%;">
<a class="user-hover" rel="jklap" id="email_jklap" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=jklap" style="color:#326ca6;">Jason Klapste</a>
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