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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-2704] double free when shutting down mongos</title>
                <link>https://jira.mongodb.org/browse/SERVER-2704</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After inserting a few hundred GB of data, I did a control-C and got the log attached.&lt;/p&gt;</description>
                <environment></environment>
        <key id="15037">SERVER-2704</key>
            <summary>double free when shutting down mongos</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="9">Done</resolution>
                                        <assignee username="eliot">Eliot Horowitz</assignee>
                                    <reporter username="kristina">Kristina Chodorow</reporter>
                        <labels>
                    </labels>
                <created>Tue, 8 Mar 2011 18:24:01 +0000</created>
                <updated>Tue, 12 Jul 2016 00:18:39 +0000</updated>
                            <resolved>Thu, 17 Mar 2011 18:50:45 +0000</resolved>
                                                    <fixVersion>1.9.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="26132" author="auto" created="Thu, 17 Mar 2011 18:50:46 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: prevent shutdown race condtion &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2704&quot; title=&quot;double free when shutting down mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2704&quot;&gt;&lt;del&gt;SERVER-2704&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/783dc5a72155e2c73236f01490e5fc1b35968f79&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/783dc5a72155e2c73236f01490e5fc1b35968f79&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="26131" author="auto" created="Thu, 17 Mar 2011 18:50:45 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: standards compliant and leak a list on shutdown to avoid race condition &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2704&quot; title=&quot;double free when shutting down mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2704&quot;&gt;&lt;del&gt;SERVER-2704&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/676db17f512e39db5c9997e90ed12956a9b62630&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/676db17f512e39db5c9997e90ed12956a9b62630&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="26130" author="auto" created="Thu, 17 Mar 2011 18:50:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: try to fix double free &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2704&quot; title=&quot;double free when shutting down mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2704&quot;&gt;&lt;del&gt;SERVER-2704&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6db701512057c1c017bd0069a27abcf2da705de0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6db701512057c1c017bd0069a27abcf2da705de0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="25547" author="kristina" created="Tue, 8 Mar 2011 20:05:52 +0000"  >&lt;p&gt;I don&apos;t know. It just returned &quot;db assertion failure&quot; without an error code and I couldn&apos;t find it in the mongos log and wasn&apos;t tracking the shards&apos; logs.  I&apos;ll try to catch it next time.&lt;/p&gt;</comment>
                            <comment id="25541" author="eliot" created="Tue, 8 Mar 2011 19:13:17 +0000"  >&lt;p&gt;What&apos;s the db assertion failure?&lt;/p&gt;</comment>
                            <comment id="25536" author="kristina" created="Tue, 8 Mar 2011 18:54:55 +0000"  >&lt;p&gt;I can replicate this pretty consistently... after inserting a few hundred to a few thousand documents I get a db assertion failure and then shutting down mongos triggers the glibc message.&lt;/p&gt;
</comment>
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                            <attachment id="11033" name="log" size="8091" author="kristina" created="Tue, 8 Mar 2011 18:24:01 +0000"/>
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