<style>
/* Changing the layout to use less space for mobiles */
@media screen and (max-device-width: 480px), screen and (-webkit-min-device-pixel-ratio: 2) {
#email-body { min-width: 30em !important; }
#email-page { padding: 8px !important; }
#email-banner { padding: 8px 8px 0 8px !important; }
#email-avatar { margin: 1px 8px 8px 0 !important; padding: 0 !important; }
#email-fields { padding: 0 8px 8px 8px !important; }
#email-gutter { width: 0 !important; }
}
</style>
<div id="email-body">
<table id="email-wrap" align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#f0f0f0;color:#000000;width:100%;">
<tr valign="top">
<td id="email-page" style="padding:16px !important;">
<table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#ffffff;border:1px solid #bbbbbb;color:#000000;width:100%;">
<tr valign="top">
<td bgcolor="#003366" style="background-color:#003366;color:#ffffff;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;line-height:1;"><img src="http://jira.qos.ch/s/en_USet69y6/731/19/_/jira-logo-scaled.png" alt="" style="vertical-align:top;" /></td>
</tr><tr valign="top">
<td id="email-banner" style="padding:32px 32px 0 32px;">
<table align="left" border="0" cellpadding="0" cellspacing="0" width="100%" style="width:100%;">
<tr valign="top">
<td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;padding:0;">
<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="brianshowers" id="email_brianshowers" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=brianshowers" style="color:#326ca6;">Brian Showers</a>
commented on <img src="http://jira.qos.ch/images/icons/bug.gif" height="16" width="16" border="0" align="absmiddle" alt="Bug"> <a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-142'>LOGBACK-142</a>
</div>
<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-142'><strong>Logback Context is not thread safe, throws java.util.ConcurrentModificationException</strong></a>
</div>
</td>
</tr>
</table>
</td>
</tr>
<tr valign="top">
<td id="email-fields" style="padding:0 32px 32px 32px;">
<table border="0" cellpadding="0" cellspacing="0" style="padding:0;text-align:left;width:100%;" width="100%">
<tr valign="top">
<td id="email-gutter" style="width:64px;white-space:nowrap;"></td>
<td>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr valign="top">
<td colspan="2" style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 16px 0;width:100%;">
<div class="comment-block" style="background-color:#edf5ff;border:1px solid #dddddd;color:#000000;padding:12px;">In case it's helpful, I thought I would share our code which triggers this. Perhaps there is a different, thread-safe way to re-initialize logback on a running system that I just don't know about?
<br/>
<br/>
{noformat}
<br/>
<br/>
public void reconfigureLogback(URL logbackFile) {
<br/>
<br/>
//Assume SLF4J is bound to logback in the current environment
<br/>
LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
<br/>
JoranConfigurator configurator = new JoranConfigurator();
<br/>
configurator.setContext(context);
<br/>
<br/>
//Clear any previous configuration (e.g. the default)
<br/>
context.reset();
<br/>
<br/>
//Add the application specific properties to the context so that they can be referenced in the logback configuration
<br/>
Properties extraProperties = getApplicationProperties();
<br/>
for (Map.Entry<Object, Object> entry : extraProperties.entrySet()) {
<br/>
<br/>
// ******** BEGIN FAILURE ********
<br/>
// This call fails intermittently with a java.util.ConcurrentModificationException
<br/>
// This is caused because LoggerContext.putProperty() called LoggerContext.syncRemoteView which
<br/>
// iterates through the LoggerContext.loggerCache. Simultaneously, other threads are still calling
<br/>
// LoggerContext.getLogger() which can modify the LoggerContext.loggerCache
<br/>
<br/>
context.putProperty((String) entry.getKey(), (String) entry.getValue());
<br/>
<br/>
// ******** END FAILURE ********
<br/>
}
<br/>
<br/>
//Reconfigure logback with the new configuration file
<br/>
configurator.doConfigure(logbackFile);
<br/>
}
<br/>
<br/>
{noformat}</div>
<div style="color:#505050;padding:4px 0 0 0;"> </div>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td><!-- End #email-page -->
</tr>
<tr valign="top">
<td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:10px;line-height:14px;padding: 0 16px 16px 16px;text-align:center;">
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</td>
</tr>
</table><!-- End #email-wrap -->
</div><!-- End #email-body -->