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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>
    </build-info>


<item>
            <title>[SERVER-4888] mongod crash with signal 7 under high write load</title>
                <link>https://jira.mongodb.org/browse/SERVER-4888</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I have a simple 3 shard cluster (1 config server, 1 mongos) set up for testing, throwing a high load of reads and writes at a collection sharded on _id (which is a random integer between 1 and 10M). After about an hour of testing, test-mongo2-us (the master) crashed with the below error, possibly while splitting a chunk / rebablancing given the timedstamps on the log entries.&lt;/p&gt;


&lt;p&gt;Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn71&amp;#93;&lt;/span&gt; received splitChunk request: { splitChunk: &quot;testdb.user&quot;, keyPattern: &lt;/p&gt;
{ _id: 1.0 }
&lt;p&gt;, min: &lt;/p&gt;
{ _id: 6252355 }
&lt;p&gt;, max: &lt;/p&gt;
{ _id: 6965549 }
&lt;p&gt;, from: &quot;test-mongo2-us:27117&quot;, splitKeys: [ &lt;/p&gt;
{ _id: 6585511 }
&lt;p&gt; ], shardId: &quot;testdb.user-_id_6252355&quot;, configdb: &quot;test-mongo1-us:27019&quot; }&lt;br/&gt;
Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn71&amp;#93;&lt;/span&gt; created new distributed lock for testdb.user on test-mongo1-us:27019 ( lock timeout : 900000, ping interval : 30000, process : 0 )&lt;br/&gt;
Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn73&amp;#93;&lt;/span&gt; command admin.$cmd command: { splitChunk: &quot;testdb.user&quot;, keyPattern: &lt;/p&gt;
{ _id: 1.0 }
&lt;p&gt;, min: &lt;/p&gt;
{ _id: 6252355 }
&lt;p&gt;, max: &lt;/p&gt;
{ _id: 6965549 }
&lt;p&gt;, from: &quot;test-mongo2-us:27117&quot;, splitKeys: [ &lt;/p&gt;
{ _id: 6585515 }
&lt;p&gt; ], shardId: &quot;testdb.user-_id_6252355&quot;, configdb: &quot;test-mongo1-us:27019&quot; } ntoreturn:1 reslen:351 555ms&lt;br/&gt;
Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn68&amp;#93;&lt;/span&gt; received splitChunk request: { splitChunk: &quot;testdb.user&quot;, keyPattern: &lt;/p&gt;
{ _id: 1.0 }
&lt;p&gt;, min: &lt;/p&gt;
{ _id: 6252355 }
&lt;p&gt;, max: &lt;/p&gt;
{ _id: 6965549 }
&lt;p&gt;, from: &quot;test-mongo2-us:27117&quot;, splitKeys: [ &lt;/p&gt;
{ _id: 6585511 }
&lt;p&gt; ], shardId: &quot;testdb.user-_id_6252355&quot;, configdb: &quot;test-mongo1-us:27019&quot; }&lt;br/&gt;
Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn68&amp;#93;&lt;/span&gt; created new distributed lock for testdb.user on test-mongo1-us:27019 ( lock timeout : 900000, ping interval : 30000, process : 0 )&lt;br/&gt;
Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn23&amp;#93;&lt;/span&gt; could not acquire lock &apos;testdb.user/test-mongo2-us.web.blizzard.net:27117:1328559662:781691710&apos; (another update won)&lt;br/&gt;
Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn23&amp;#93;&lt;/span&gt; distributed lock &apos;testdb.user/test-mongo2-us.web.blizzard.net:27117:1328559662:781691710&apos; was not acquired.&lt;br/&gt;
Tue Feb  7 00:01:21 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn23&amp;#93;&lt;/span&gt; command admin.$cmd command: { splitChunk: &quot;testdb.user&quot;, keyPattern: &lt;/p&gt;
{ _id: 1.0 }
&lt;p&gt;, min: &lt;/p&gt;
{ _id: 6252355 }
&lt;p&gt;, max: &lt;/p&gt;
{ _id: 6965549 }
&lt;p&gt;, from: &quot;test-mongo2-us:27117&quot;, splitKeys: [ &lt;/p&gt;
{ _id: 6585531 }
&lt;p&gt; ], shardId: &quot;testdb.user-_id_6252355&quot;, configdb: &quot;test-mongo1-us:27019&quot; } ntoreturn:1 reslen:351 653ms&lt;br/&gt;
Tue Feb  7 00:01:21 Invalid access at address: 0xb9bd3c&lt;/p&gt;

&lt;p&gt;Tue Feb  7 00:01:21 Got signal: 7 (Bus error).&lt;/p&gt;</description>
                <environment>uname -a&lt;br/&gt;
Linux test-mongo2-us.internal.net 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:14 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux&lt;br/&gt;
</environment>
        <key id="30046">SERVER-4888</key>
            <summary>mongod crash with signal 7 under high write load</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="peger">P Eger</reporter>
                        <labels>
                    </labels>
                <created>Tue, 7 Feb 2012 03:25:14 +0000</created>
                <updated>Thu, 11 Jul 2013 17:27:41 +0000</updated>
                            <resolved>Thu, 17 Jan 2013 19:25:58 +0000</resolved>
                                    <version>2.0.2</version>
                                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="379101" author="thedeveloper" created="Thu, 11 Jul 2013 17:22:31 +0000"  >&lt;p&gt;I&apos;m also having issues with sharding under high write load. More info: &lt;a href=&quot;https://groups.google.com/forum/#!topic/mongodb-user/BF06C0yqtV4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/forum/#!topic/mongodb-user/BF06C0yqtV4&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Here&apos;s my mongos log (includes stack trace):&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;
		&lt;tbody &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-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;Thu Jul 11 16:26:17.903 [conn468] warning: splitChunk failed - cmd: { splitChunk: &quot;trends.dimension.language&quot;, keyPattern: { _id: 1.0 }, min: { _id: BinData }, max: { _id: MaxKey }, from: &quot;rs4&quot;, splitKeys: [ { _id: BinData } ], shardId: &quot;trends.dimension.language-_id_BinData(0, 000120130711)&quot;, configdb: &quot;mongobig-1-1:27019,mongobig-2-1:27019,mongobig-3-1:27019&quot; } result: { who: { _id: &quot;trends.dimension.language&quot;, process: &quot;mongobig-4-1:27018:1373558874:1854596173&quot;, state: 1, ts: ObjectId(&apos;51dedca979a3c5840b68bbe1&apos;), when: new Date(1373559977876), who: &quot;mongobig-4-1:27018:1373558874:1854596173:conn133:1732459270&quot;, why: &quot;split-{ _id: BinData }&quot; }, ok: 0.0, errmsg: &quot;the collection&apos;s metadata lock is taken&quot; }&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;Thu Jul 11 16:26:18.530 [conn470] ChunkManager: time to load chunks for trends.dimension.language: 0ms sequenceNumber: 141 version: 2|3||51dedb10e68a130889d33a14 based on: 2|1||51dedb10e68a130889d33a14&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;Thu Jul 11 16:26:18.530 [conn470] autosplitted trends.dimension.language shard: ns:trends.dimension.languageshard: rs4:rs4/mongobig-4-1:27018lastmod: 2|1||000000000000000000000000min: { _id: BinData }max: { _id: MaxKey } on: { _id: BinData } (splitThreshold 471859) (migrate suggested)&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;Thu Jul 11 16:26:18.535 [conn470] moving chunk (auto): ns:trends.dimension.languageshard: rs4:rs4/mongobig-4-1:27018lastmod: 2|3||000000000000000000000000min: { _id: BinData }max: { _id: MaxKey } to: rs5:rs5/mongobig-5-1:27018&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;Thu Jul 11 16:26:18.535 [conn470] moving chunk ns: trends.dimension.language moving ( ns:trends.dimension.languageshard: rs4:rs4/mongobig-4-1:27018lastmod: 2|3||000000000000000000000000min: { _id: BinData }max: { _id: MaxKey }) rs4:rs4/mongobig-4-1:27018 -&amp;gt; rs5:rs5/mongobig-5-1:27018&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;Thu Jul 11 16:26:18.549 [conn464] warning: splitChunk failed - cmd: { splitChunk: &quot;trends.dimension.language&quot;, keyPattern: { _id: 1.0 }, min: { _id: BinData }, max: { _id: MaxKey }, from: &quot;rs4&quot;, splitKeys: [ { _id: BinData } ], shardId: &quot;trends.dimension.language-_id_BinData(0, 000120130711)&quot;, configdb: &quot;mongobig-1-1:27019,mongobig-2-1:27019,mongobig-3-1:27019&quot; } result: { who: { _id: &quot;trends.dimension.language&quot;, process: &quot;mongobig-4-1:27018:1373558874:1854596173&quot;, state: 1, ts: ObjectId(&apos;51dedcaa79a3c5840b68bbe3&apos;), when: new Date(1373559978507), who: &quot;mongobig-4-1:27018:1373558874:1854596173:conn149:504692606&quot;, why: &quot;split-{ _id: BinData }&quot; }, ok: 0.0, errmsg: &quot;the collection&apos;s metadata lock is taken&quot; }&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;Thu Jul 11 16:26:18.549 [conn466] warning: splitChunk failed - cmd: { splitChunk: &quot;trends.dimension.language&quot;, keyPattern: { _id: 1.0 }, min: { _id: BinData }, max: { _id: MaxKey }, from: &quot;rs4&quot;, splitKeys: [ { _id: BinData } ], shardId: &quot;trends.dimension.language-_id_BinData(0, 000120130711)&quot;, configdb: &quot;mongobig-1-1:27019,mongobig-2-1:27019,mongobig-3-1:27019&quot; } result: { who: { _id: &quot;trends.dimension.language&quot;, process: &quot;mongobig-4-1:27018:1373558874:1854596173&quot;, state: 1, ts: ObjectId(&apos;51dedcaa79a3c5840b68bbe3&apos;), when: new Date(1373559978507), who: &quot;mongobig-4-1:27018:1373558874:1854596173:conn149:504692606&quot;, why: &quot;split-{ _id: BinData }&quot; }, ok: 0.0, errmsg: &quot;the collection&apos;s metadata lock is taken&quot; }&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;Thu Jul 11 16:26:18.625 [conn470] moveChunk result: { who: { _id: &quot;trends.dimension.language&quot;, process: &quot;mongobig-4-1:27018:1373558874:1854596173&quot;, state: 1, ts: ObjectId(&apos;51dedcaa79a3c5840b68bbe3&apos;), when: new Date(1373559978507), who: &quot;mongobig-4-1:27018:1373558874:1854596173:conn149:504692606&quot;, why: &quot;split-{ _id: BinData }&quot; }, ok: 0.0, errmsg: &quot;the collection metadata could not be locked with lock migrate-{ _id: BinData }&quot; }&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;Thu Jul 11 16:26:18.625 [conn470] Assertion: 10412:moveAndCommit failed: { who: { _id: &quot;trends.dimension.language&quot;, process: &quot;mongobig-4-1:27018:1373558874:1854596173&quot;, state: 1, ts: ObjectId(&apos;51dedcaa79a3c5840b68bbe3&apos;), when: new Date(1373559978507), who: &quot;mongobig-4-1:27018:1373558874:1854596173:conn149:504692606&quot;, why: &quot;split-{ _id: BinData }&quot; }, ok: 0.0, errmsg: &quot;the collection metadata could not be locked with lock migrate-{ _id: BinData }&quot; }&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;0xa82161 0xa46e8b 0xa473cc 0x8c7b5e 0x9bc29c 0x9c30ca 0x991db1 0x669891 0xa6e8ce 0x7f5fc5b4fe9a 0x7f5fc4e62ccd&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; /usr/bin/mongos(_ZN5mongo15printStackTraceERSo+0x21) [0xa82161]&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; /usr/bin/mongos(_ZN5mongo11msgassertedEiPKc+0x9b) [0xa46e8b]&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; /usr/bin/mongos() [0xa473cc]&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; /usr/bin/mongos(_ZNK5mongo5Chunk13splitIfShouldEl+0x23ee) [0x8c7b5e]&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; /usr/bin/mongos(_ZN5mongo13ShardStrategy7_updateERKSsRKNS_7BSONObjES5_iRNS_7RequestERNS_9DbMessageEi+0x3bc) [0x9bc29c]&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; /usr/bin/mongos(_ZN5mongo13ShardStrategy7writeOpEiRNS_7RequestE+0x63a) [0x9c30ca]&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;
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&lt;p/&gt;</comment>
                            <comment id="242806" author="eliot" created="Thu, 17 Jan 2013 19:25:58 +0000"  >&lt;p&gt;Without a full stack trace, diagnosing will be impossible.&lt;br/&gt;
There have been various fixes in 2.2.x,, so if you haven&apos;t already i would upgrade to the latest.&lt;/p&gt;</comment>
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