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                                    <a class="user-hover" rel="arossi" id="email_arossi" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=arossi" style="color:#326ca6;">Albert Louis Rossi</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-961'>LOGBACK-961</a>
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                <a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-961'><strong>SocketAppender queue thread never completes</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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                    1.1.1            </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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                    SocketAppenderTest.gz            </td>
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        <strong style="font-weight:normal;color:#505050;">Components:</strong>
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                    logback-classic,                     logback-core            </td>
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        <strong style="font-weight:normal;color:#505050;">Created:</strong>
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        20/Mar/14 10:43 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;'>There seems to be a deadlock which does not allow the SocketAppender to release its socket/thread resources.  </p>

<p style='margin-top:0;margin-bottom:10px;'>The attached code demonstrates this as follows:</p>

<p style='margin-top:0;margin-bottom:10px;'>A simple socket server is booted on port 9867 for 2 minutes.  Its configuration is set to write all received messages to a history.log, and internal ch.qos messages to server.log, at warn level.</p>

<p style='margin-top:0;margin-bottom:10px;'>After a 3 second pause, the main test attempts to send an error message.<br/>
The server exits after 2 minutes, but main in the test never completes.  <br/>
A thread dump shows that the problem seems to like in a thread pool wait<br/>
(FutureTask which does not complete).</p>

<p style='margin-top:0;margin-bottom:10px;'>This requires an explicit kill (cntrl-C) to make the shell script exit.</p>

<p style='margin-top:0;margin-bottom:10px;'>Inspection of the history.log should reveal, however, that the message was sent and received successfully by the server.</p>

<p style='margin-top:0;margin-bottom:10px;'>I note that there is no use of the java.util.concurrent.ThreadPoolExecutor in the previous version (1.0.12) ... not sure about 1.0.13.</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;'>on linux x86_64, though I doubt it is platform-specific</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;">Labels:</strong>
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                    logging
                    socket
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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="arossi" id="email_arossi" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=arossi" style="color:#326ca6;">Albert Louis Rossi</a>
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