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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-20755] Config server hang during SIGTERM-initiated shutdown on OS X</title>
                <link>https://jira.mongodb.org/browse/SERVER-20755</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In a recent Evergreen run of sharding_jscore_passthrough_WT on OS X, a config server (the replica set primary, in particular) hung indefinitely during normal SIGTERM-initiated shutdown after the suite completed.  The last lines of output from the mongod were as follows:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[ShardedClusterFixture:job0:configsvr:primary] 2015-10-03T12:16:43.197-0400 I CONTROL  [signalProcessingThread] got signal 15 (Terminated: 15), will terminate after current cmd ends&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[ShardedClusterFixture:job0:configsvr:primary] 2015-10-03T12:16:43.197-0400 I FTDC     [signalProcessingThread] Stopping full-time diagnostic data capture&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[ShardedClusterFixture:job0:configsvr:primary] 2015-10-03T12:16:43.199-0400 I REPL     [signalProcessingThread] Stopping replication applier threads&lt;/span&gt;&lt;/pre&gt;
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&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Based on correlating this output with a reading of exitCleanly(), this points to a hang in one of the following:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;ReplicationCoordinator::shutdown()&lt;/li&gt;
	&lt;li&gt;ShardingState::shutdown()&lt;/li&gt;
	&lt;li&gt;Locker::lockGlobalComplete()&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;No further output was observed from this process; the test harness issued a SIGKILL against the process ~2 hours later.  Unfortunately, the hang analyzer did not successfully produce any stack traces from this process (perhaps the hang analyzer is currently broken on OS X?).&lt;/p&gt;

&lt;p&gt;In addition to investigating the hang analyzer issue, we could consider adding additional log-level 0 diagnostics to the mongod shutdown process to assist in narrowing down the culprit of this issue.&lt;/p&gt;

&lt;p&gt;Evergreen link: &lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_mongo_master_osx_108_sharding_jscore_passthrough_WT_1fd64cee88562e77883db5b75ee666a55b15e748_15_10_02_22_00_15&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://evergreen.mongodb.com/task/mongodb_mongo_master_osx_108_sharding_jscore_passthrough_WT_1fd64cee88562e77883db5b75ee666a55b15e748_15_10_02_22_00_15&lt;/a&gt;&lt;br/&gt;
Logkeeper link: &lt;a href=&quot;https://logkeeper.mongodb.org/build/560ffa9c90413021b1bacd4e/all&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://logkeeper.mongodb.org/build/560ffa9c90413021b1bacd4e/all&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="232817">SERVER-20755</key>
            <summary>Config server hang during SIGTERM-initiated shutdown on OS X</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="4">Incomplete</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="rassi">J Rassi</reporter>
                        <labels>
                    </labels>
                <created>Mon, 5 Oct 2015 16:17:54 +0000</created>
                <updated>Tue, 6 Dec 2022 04:43:05 +0000</updated>
                            <resolved>Fri, 11 Nov 2016 21:37:47 +0000</resolved>
                                                                    <component>Replication</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1432407" author="spencer" created="Fri, 11 Nov 2016 21:37:47 +0000"  >&lt;p&gt;Haven&apos;t seen this issue in over a year and the code has changed quite a bit since then&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="232598">SERVER-20959</issuekey>
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