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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-6209] mongos &apos;corrupted double-linked list&apos; during shard rebalancing</title>
                <link>https://jira.mongodb.org/browse/SERVER-6209</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is the second occurrence of the mongos process crashing while it is trying to rebalance the shards. It also appears that the crash is occurring after the stop time in the sharding window.&lt;/p&gt;

&lt;p&gt;Mongo sharding window configuration:&lt;br/&gt;
mongos&amp;gt; db.settings.findOne(&lt;/p&gt;
{ _id : &quot;balancer&quot; }
&lt;p&gt;)&lt;br/&gt;
{&lt;br/&gt;
	&quot;_id&quot; : &quot;balancer&quot;,&lt;br/&gt;
	&quot;activeWindow&quot; : &lt;/p&gt;
{
		&quot;start&quot; : &quot;01:00&quot;,
		&quot;stop&quot; : &quot;13:00&quot;
	}
&lt;p&gt;}&lt;/p&gt;

&lt;p&gt;Attached is the log extract for the period leading up to the crash of mongos.&lt;/p&gt;

&lt;p&gt;Output for: uname -a&lt;br/&gt;
Linux dalwork3.clarity.net 2.6.18-238.21.1.el5 #1 SMP Tue Aug 9 11:57:24 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux&lt;/p&gt;

&lt;p&gt;Output for: mongos --version&lt;br/&gt;
Tue Jun 26 14:24:26 mongos db version v2.0.6, pdfile version 4.5 starting (--help for usage)&lt;br/&gt;
Tue Jun 26 14:24:26 git version: e1c0cbc25863f6356aa4e31375add7bb49fb05bc&lt;br/&gt;
Tue Jun 26 14:24:26 build info: Linux ip-10-110-9-236 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41&lt;/p&gt;

&lt;p&gt;Our Mongo Servers can be viewed in MMS under &quot;Clarity Services&quot;&lt;/p&gt;

&lt;p&gt;Thank you for such a great product!&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Reid Morrison&lt;br/&gt;
Software Architect&lt;br/&gt;
Clarity Services&lt;/p&gt;</description>
                <environment>Red Hat Linux 5 64 bit</environment>
        <key id="42469">SERVER-6209</key>
            <summary>mongos &apos;corrupted double-linked list&apos; during shard rebalancing</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="-1">Unassigned</assignee>
                                    <reporter username="reidmo@gmail.com">Reid Morrison</reporter>
                        <labels>
                    </labels>
                <created>Tue, 26 Jun 2012 14:32:12 +0000</created>
                <updated>Tue, 16 Nov 2021 17:39:00 +0000</updated>
                            <resolved>Mon, 11 Mar 2013 18:19:22 +0000</resolved>
                                    <version>2.0.6</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="286510" author="JIRAUSER1253508" created="Mon, 11 Mar 2013 18:39:53 +0000"  >&lt;p&gt;Ian, good point, I completely forgot about this ticket. I can confirm that it was completely resolved in V2.2.2. Thank you for resolving it for us.&lt;/p&gt;</comment>
                            <comment id="286473" author="ian@10gen.com" created="Mon, 11 Mar 2013 18:19:22 +0000"  >&lt;p&gt;Reid, because of the amount of time transpired since you filed this ticket I&apos;m resolving it as incomplete.  My apologies for us not responding sooner.  Please do add a comment if you&apos;re still able to recreate (especially on a 2.2.x or 2.4 release candidate) and I&apos;ll reopen this.&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="17578" name="mongos.log" size="31165" author="reidmorrison" created="Tue, 26 Jun 2012 14:32:12 +0000"/>
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