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<channel>
    <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-7029] Mongos crash on replica set failover</title>
                <link>https://jira.mongodb.org/browse/SERVER-7029</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Sharded 4 node replica set with priorities 2, 1, 0, 0 &lt;br/&gt;
Transient failover from priority 2 to priority 1 node and back to priority 2 node causes mongos seg fault. &lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/NeeB86n9-JU&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/forum/?fromgroups=#!topic/mongodb-user/NeeB86n9-JU&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Just had more nodes collapse on a different column set now... here&apos;s the log with logLevel:2 turned on from mongos&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;Tue Sep 11 14:03:29 [conn1510] warning: splitChunk failed - cmd: { splitChunk: &quot;catalog.feed_data_changelog&quot;, keyPattern: { retid: 1.0, feedid: 1.0, uniqid: 1.0, version: 1.0 }, min: { retid: 13712, feedid: 2669, uniqid: &quot;287e1d9af8a592cfe0a80aa7b80df7ba&quot;, version: 1 }, max: { retid: 13712, feedid: 2669, uniqid: &quot;4cf79bccacf4e71d2e73607677fea6e5&quot;, version: 1 }, from: &quot;col03&quot;, splitKeys: [ { retid: 13712, feedid: 2669, uniqid: &quot;38623d70f41a1a433b27e0f187219eb0&quot;, version: 3 } ], shardId: &quot;catalog.feed_data_changelog-retid_13712feedid_2669uniqid_&quot;287e1d9af8a592cfe0a80aa7b80df7ba&quot;version_1&quot;, configdb: &quot;servercfg1:27019,servercfg2:27019,servercfg3:27019&quot; } result: { who: { _id: &quot;catalog.feed_data_changelog&quot;, process: &quot;server01c03:27017:1346968636:1431697445&quot;, state: 2, ts: ObjectId(&apos;504f71768fb2ef42a78a0c25&apos;), when: new Date(1347383670849), who: &quot;server01c03:27017:1346968636:1431697445:conn62819:2040432535&quot;, why: &quot;migrate-{ retid: 8941, feedid: 8005, uniqid: &quot;9cd5f39b3cfaeb79e8925eef346e68d0&quot;, version: 32 }&quot; }, errmsg: &quot;the collection&apos;s metadata lock is taken&quot;, ok: 0.0 }&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;Tue Sep 11 14:03:29 [conn1510] ChunkManager: time to load chunks for catalog.feed_data_changelog: 5ms sequenceNumber: 191 version: 227|3||504aa7463a46fa0144cf6f5e based on: 227|3||504aa7463a46fa0144cf6f5e&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;Tue Sep 11 14:03:29 [conn1510] warning: chunk manager reload forced for collection &apos;catalog.feed_data_changelog&apos;, config version is 227|3||504aa7463a46fa0144cf6f5e&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;Tue Sep 11 14:04:19 [conn1510] end connection 127.0.0.1:52194 (2 connections now open)&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;Tue Sep 11 14:04:20 [mongosMain] connection accepted from 127.0.0.1:52353 #1515 (3 connections now open)&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;Tue Sep 11 14:04:35 [ReplicaSetMonitorWatcher] Primary for replica set col03 changed to server02c03:27017&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;Tue Sep 11 14:04:45 [ReplicaSetMonitorWatcher] Primary for replica set col03 changed to server01c03:27017&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;Tue Sep 11 14:04:45 [ReplicaSetMonitorWatcher] Primary for replica set col03 changed to server02c03:27017&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;Tue Sep 11 14:04:49 [WriteBackListener-server02c03:27017] DBClientCursor::init call() failed&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;Tue Sep 11 14:04:49 [WriteBackListener-server02c03:27017] WriteBackListener exception : DBClientBase::findN: transport error: server02c03:27017 ns: admin.$cmd query: { writebacklisten: ObjectId(&apos;504e77846a941ccd587623c8&apos;) }&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;Tue Sep 11 14:04:49 [conn1515] got not master for: server02c03:27017&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;Received signal 11&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;Backtrace: 0x8386d5 0x3bd7a302d0 0x2aaaab2bad80 &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(_ZN5mongo17printStackAndExitEi+0x75)[0x8386d5]&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;/lib64/libc.so.6[0x3bd7a302d0]&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;[0x2aaaab2bad80]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="50409">SERVER-7029</key>
            <summary>Mongos crash on replica set failover</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="3">Duplicate</resolution>
                                        <assignee username="greg_10gen">Greg Studer</assignee>
                                    <reporter username="gregor">Gregor Macadam</reporter>
                        <labels>
                    </labels>
                <created>Thu, 13 Sep 2012 10:40:04 +0000</created>
                <updated>Fri, 15 Feb 2013 15:06:53 +0000</updated>
                            <resolved>Tue, 18 Sep 2012 17:48:26 +0000</resolved>
                                    <version>2.2.0</version>
                                                    <component>Sharding</component>
                                        <votes>2</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="181045" author="ian@10gen.com" created="Wed, 31 Oct 2012 17:15:01 +0000"  >&lt;p&gt;Hi Chamith, I&apos;m sorry you&apos;re still seeing a problem.  The best option for now would be to open up a new conversation on our forums at &lt;a href=&quot;https://groups.google.com/forum/?fromgroups#!forum/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/forum/?fromgroups#!forum/mongodb-user&lt;/a&gt; - our team will be able to discuss the problem further with you there and then, if needed, either reopen this ticket or open a new one covering any bugs you&apos;ve identified.&lt;/p&gt;</comment>
                            <comment id="180934" author="chamithmalinda" created="Wed, 31 Oct 2012 13:37:20 +0000"  >&lt;p&gt;Hi Ian Whalen/All&lt;/p&gt;

&lt;p&gt;We updated our mongodb servers from 2.2.0 to 2.2.1 as you said regarding to this issue. But the same issue is occurring. &lt;/p&gt;

&lt;p&gt;Following is the log just before the crash&lt;/p&gt;

&lt;p&gt;&quot;Wed Oct 31 06:16:41 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn733481&amp;#93;&lt;/span&gt; got not master for: xx.xxx.xxx.xx:27772&lt;br/&gt;
Wed Oct 31 06:16:41 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn740969&amp;#93;&lt;/span&gt; end connection xx.xxx.xxx.xx:56104 (489 connections now open)&lt;br/&gt;
Received signal 11&lt;br/&gt;
Backtrace: 0x8386d5 0x7fb65e9c6230 0xc632b0 &lt;br/&gt;
mongos(_ZN5mongo17printStackAndExitEi+0x75)&lt;span class=&quot;error&quot;&gt;&amp;#91;0x8386d5&amp;#93;&lt;/span&gt;&lt;br/&gt;
/lib/libc.so.6(+0x32230)&lt;span class=&quot;error&quot;&gt;&amp;#91;0x7fb65e9c6230&amp;#93;&lt;/span&gt;&lt;br/&gt;
Wed Oct 31 06:16:41 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn741593&amp;#93;&lt;/span&gt; end connection xx.xxx.xxx.xx:42052 (488 connections now open)&lt;br/&gt;
Wed Oct 31 06:16:41 &lt;span class=&quot;error&quot;&gt;&amp;#91;mongosMain&amp;#93;&lt;/span&gt; connection accepted from xx.xxx.xxx.xx:43605 #741604 (489 connections now open)&lt;br/&gt;
Wed Oct 31 06:16:41 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn741577&amp;#93;&lt;/span&gt; Socket recv() errno:104 Connection reset by peer xx.xxx.xxx.xx:27772&lt;br/&gt;
Wed Oct 31 06:16:41 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn741577&amp;#93;&lt;/span&gt; SocketException: remote: xx.xxx.xxx.xx:27772 error: 9001 socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;1&amp;#93;&lt;/span&gt; server &lt;span class=&quot;error&quot;&gt;&amp;#91;xx.xxx.xxx.xx:27772&amp;#93;&lt;/span&gt; &lt;br/&gt;
Wed Oct 31 06:16:41 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn741577&amp;#93;&lt;/span&gt; DBClientCursor::init call() failed&lt;br/&gt;
mongos(_ZTVN5mongo18DBClientReplicaSetE+0x10)&lt;span class=&quot;error&quot;&gt;&amp;#91;0xc632b0&amp;#93;&lt;/span&gt;&lt;br/&gt;
===&quot; &lt;/p&gt;

&lt;p&gt;Many thanks,&lt;br/&gt;
Chamith&lt;/p&gt;</comment>
                            <comment id="179985" author="gregor" created="Mon, 29 Oct 2012 08:31:47 +0000"  >&lt;p&gt;Hi - the 2.2.1 release should be available in the next week or two, pending any unexpected problems.&lt;br/&gt;
Thanks&lt;br/&gt;
Gregor&lt;/p&gt;</comment>
                            <comment id="179983" author="chamithmalinda" created="Mon, 29 Oct 2012 08:24:00 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;According to the Mongo developers (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER&lt;/a&gt;) the 2.2.1 should be released on last Friday. &lt;/p&gt;

&lt;p&gt;But still can&apos;t find than version on downloads. (&lt;a href=&quot;http://www.mongodb.org/downloads&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.mongodb.org/downloads&lt;/a&gt;)&lt;br/&gt;
Is there a place that I can download this version or is it yet to be released? Then when it will be released?&lt;/p&gt;

&lt;p&gt;Many thanks,&lt;br/&gt;
Chamith.&lt;/p&gt;
</comment>
                            <comment id="178543" author="dan@10gen.com" created="Wed, 24 Oct 2012 05:43:11 +0000"  >&lt;p&gt;The 2.2.1-rc1 build is still be qualified.  The 2.2.1 release will be announced here: &lt;br/&gt;
&lt;a href=&quot;https://groups.google.com/forum/?fromgroups=#!forum/mongodb-announce&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/forum/?fromgroups=#!forum/mongodb-announce&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="177736" author="chamithmalinda" created="Mon, 22 Oct 2012 13:46:24 +0000"  >&lt;p&gt;Thanks Ian.&lt;/p&gt;

&lt;p&gt;We will upgrade to 2.2.1 when released. By Thursday It will be released right ?&lt;/p&gt;

&lt;p&gt;Thanks for the quick reply.&lt;/p&gt;</comment>
                            <comment id="177719" author="ian@10gen.com" created="Mon, 22 Oct 2012 13:08:50 +0000"  >&lt;p&gt;Chamith, the fix for this issue has indeed been committed and will be available in both 2.3.0 and 2.2.1 when those releases are made.  Please note, however, that 2.3.0 is a development release so it should not be used in a development environment.&lt;/p&gt;</comment>
                            <comment id="177682" author="chamithmalinda" created="Mon, 22 Oct 2012 10:57:50 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;We are currently having the same issue. Our mongodb version is 2.2.0. &lt;br/&gt;
According to the &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7061&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-7061&lt;/a&gt;, This issue is fixed in 2.3.0 right?&lt;br/&gt;
Is there way to overcome this issue other than upgrading to 2.3.0 ?&lt;/p&gt;

&lt;p&gt;Thanks and appreciate your help.&lt;/p&gt;</comment>
                            <comment id="165642" author="greg_10gen" created="Tue, 18 Sep 2012 17:48:18 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7061&quot; title=&quot;mongos can use invalid ptr to master conn when setShardVersion fails&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7061&quot;&gt;&lt;del&gt;SERVER-7061&lt;/del&gt;&lt;/a&gt; describes the issue in more detail.&lt;/p&gt;</comment>
                            <comment id="165641" author="greg_10gen" created="Tue, 18 Sep 2012 17:47:46 +0000"  >&lt;p&gt;Think we&apos;ve tracked this down, thanks again for the help.  Linked to the duplicate ticket.&lt;/p&gt;</comment>
                            <comment id="165632" author="greg_10gen" created="Tue, 18 Sep 2012 17:32:14 +0000"  >&lt;p&gt;@Daniel - thanks for the trace - if you have any more of the log, it would be very useful to see that as well.  As-is, it&apos;ll help us out quite a bit though - we&apos;ll start digging.&lt;/p&gt;

&lt;p&gt;Think the other problem is a config server that is unreachable?  Pretty sure it&apos;s unrelated.&lt;/p&gt;
</comment>
                            <comment id="165607" author="tfort" created="Tue, 18 Sep 2012 16:51:05 +0000"  >&lt;p&gt;Daniel, I did the same thing and was still able to reproduce the issue after a few hours of heavy write traffic.  Depending on how well your shard key distributes on its own, we observed you can minimize the effects of the mongos crashing by setting the balancerWindow to offpeak hours, increasing the chunk size, and (if reasonable in your environment) setting all secondaries to priority:0 (disabling write fault tolerance/redundancy).  I have a nagios check for the primaries to alert if they are ever down so that I can manually promote a secondary.  It&apos;s definitely not a production ready plan, but it helps keep mongos up and running and not a nightmare to admin.  &lt;/p&gt;</comment>
                            <comment id="165600" author="mongo-daniel" created="Tue, 18 Sep 2012 16:43:07 +0000"  >&lt;p&gt;Hi, i have just completely reset my cluster incl. deleting &lt;b&gt;all&lt;/b&gt; data (config servers, all mongod data etc..). I am importing data now and saw this error. It&apos;s not crashing the mongos, but it starts similar. Maybe it&apos;s useful:&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;&amp;nbsp;&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;Tue Sep 18 18:31:09 [LockPinger] cluster config1:27019,config2:27019,config3:27019 pinged successfully at Tue Sep 18 18:31:06 2012 by distributed lock pinger &apos;config1:27019,config2:27019,config3:27019/server1:27017:1347980213:1804289383&apos;, sleeping for 30000ms&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;Tue Sep 18 18:31:13 [Balancer] distributed lock &apos;balancer/server1:27017:1347980213:1804289383&apos; acquired, ts : 5058a1cc86b1876254c835da&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;Tue Sep 18 18:31:17 [Balancer] distributed lock &apos;balancer/server1:27017:1347980213:1804289383&apos; unlocked. &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;Tue Sep 18 18:32:09 [LockPinger] Socket recv() timeout  server1:27019&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;Tue Sep 18 18:32:29 [CheckConfigServers] Socket recv() timeout  server1:27019&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;Tue Sep 18 18:32:53 [CheckConfigServers] SocketException: remote: server1:27019 error: 9001 socket exception [3] server [server1:27019] &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;Tue Sep 18 18:32:53 [CheckConfigServers] DBClientCursor::init call() failed&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;Tue Sep 18 18:32:53 [LockPinger] SocketException: remote: server1:27019 error: 9001 socket exception [3] server [server1:27019] &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;Tue Sep 18 18:32:53 [LockPinger] DBClientCursor::init call() failed&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;Tue Sep 18 18:32:53 [CheckConfigServers] warning:  couldn&apos;t check on config server:config2:27019 ok for now : 10276 DBClientBase::findN: transport error: config2:27019 ns: admin.$cmd query: { getlasterror: 1 }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Tue Sep 18 18:32:53 [LockPinger] scoped connection to config1:27019,config2:27019,config3:27019 not being returned to the pool&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Tue Sep 18 18:32:53 [LockPinger] warning: distributed lock pinger &apos;config1:27019,config2:27019,config3:27019/server1:27017:1347980213:1804289383&apos; detected an exception while pinging. :: caused by :: SyncClusterConnection::udpate prepare failed: 10276 DBClientBase::findN: transport error: config2:27019 ns: admin.$cmd query: { fsync: 1 } config2:27019:{}&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;Tue Sep 18 18:33:01 [Balancer] distributed lock &apos;balancer/server1:27017:1347980213:1804289383&apos; acquired, ts : 5058a1db86b1876254c835db&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
                            <comment id="165170" author="mongo-daniel" created="Mon, 17 Sep 2012 19:24:23 +0000"  >&lt;p&gt;Yes. Took some hours to reproduce it:&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;Mon Sep 17 18:17:42 [Balancer] Refreshing MaxChunkSize: 64&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;Mon Sep 17 18:17:42 BackgroundJob starting: ConnectBG&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;Mon Sep 17 18:17:42 [Balancer] checking last ping for lock &apos;balancer/client1:27017:1347895185:1804289383&apos; against process client1:27017:1347895185:1804289383 and ping Mon Sep 17 18:16:36 2012&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;Mon Sep 17 18:17:42 [Balancer] could not force lock &apos;balancer/client1:27017:1347895185:1804289383&apos; because elapsed time 0 &amp;lt;= takeover time 900000&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;Mon Sep 17 18:17:42 [Balancer] skipping balancing round because another balancer is active&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs2:27018] SocketException: remote: shard3_rs2_IP:27018 error: 9001 socket exception [0] server [shard3_rs2_IP: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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs2:27018] DBClientCursor::init call() failed&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs2:27018] User Assertion: 10276:DBClientBase::findN: transport error: shard3_rs2:27018 ns: admin.$cmd query: { writebacklisten: ObjectId(&apos;5057388e7773804af634bb61&apos;) }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs2:27018] WriteBackListener exception : DBClientBase::findN: transport error: shard3_rs2:27018 ns: admin.$cmd query: { writebacklisten: ObjectId(&apos;5057388e7773804af634bb61&apos;) }&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018] GLE is { singleShard: &quot;rs_wa_3/shard3_rs1:27018,shard3_rs2:27018,shard3_rs3:27018&quot;, n: 0, lastOp: Timestamp 1347898666000|3, connectionId: 101460, err: null, ok: 1.0 }&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018] writebacklisten result: { data: { writeBack: true, ns: &quot;database.documents&quot;, id: ObjectId(&apos;50574c6600000000000209d2&apos;), connectionId: 101453, instanceIdent: &quot;shard3_rs1:27018&quot;, version: Timestamp 428000|0, versionEpoch: ObjectId(&apos;000000000000000000000000&apos;), yourVersion: Timestamp 427000|5, yourVersionEpoch: ObjectId(&apos;000000000000000000000000&apos;), msg: BinData }, ok: 1.0 }&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018] connectionId: shard3_rs1:27018:101453 writebackId: 50574c6600000000000209d2 needVersion : 428|0||000000000000000000000000 mine : 428|1||000000000000000000000000&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018] op: insert len: 631 ns: database.documents{ _id: ObjectId(&apos;50367fbae4b0c4a3a7f44e6e&apos;), e_uuid: &quot;59a9b774-5e7c-475e-8a3b-186e3810c8f1&quot;, uuid: &quot;2d5f4ae8-a4f7-44a7-b962-83bd0bf0f39f&quot;, time_of_import: 1345748922, content: &quot;test content&quot;, content_source: &quot;BODY&quot;, document_uuid: &quot;8bf3c955-0bd0-4339-a125-d7b02730a912&quot;, domain: &quot;www.test.eu&quot;, import_date: new Date(1345748922054), language: &quot;EN&quot;, persist_date: new Date(1345748922054), published_date: new Date(1345520473835), published_date_not_found: false, source_name: &quot;blog&quot;, source_type: &quot;BLOG&quot;, url: &quot;http://www.test.eu/2012/08/21/&quot;, value: 0 }&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018] wbl already reloaded config information for version 428|0||000000000000000000000000, at version 428|1||000000000000000000000000&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;Mon Sep 17 18:17:46 BackgroundJob starting: ConnectBG&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018]  have to set shard version for conn: shard3_rs2:27018 ns:database.documents my last seq: 0  current: 59 version: 428|1||000000000000000000000000 manager: 0x7f38f6c17b00&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018]     setShardVersion  rs_wa_3 shard3_rs2:27018  database.documents  { setShardVersion: &quot;database.documents&quot;, configdb: &quot;config1:27019,config2:27019,config3:27019&quot;, version: Timestamp 428000|1, versionEpoch: ObjectId(&apos;000000000000000000000000&apos;), serverID: ObjectId(&apos;5057388e7773804af634bb61&apos;), shard: &quot;rs_wa_3&quot;, shardHost: &quot;rs_wa_3/shard3_rs1:27018,shard3_rs2:27018,shard3_rs3:27018&quot; } 0x7f38ffb1b9e0&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018]        setShardVersion failed!&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;{ need_authoritative: true, errmsg: &quot;first setShardVersion&quot;, ok: 0.0 }&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018]  have to set shard version for conn: shard3_rs2:27018 ns:database.documents my last seq: 0  current: 59 version: 428|1||000000000000000000000000 manager: 0x7f38f6c17b00&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018]     setShardVersion  rs_wa_3 shard3_rs2:27018  database.documents  { setShardVersion: &quot;database.documents&quot;, configdb: &quot;config1:27019,config2:27019,config3:27019&quot;, version: Timestamp 428000|1, versionEpoch: ObjectId(&apos;000000000000000000000000&apos;), serverID: ObjectId(&apos;5057388e7773804af634bb61&apos;), authoritative: true, shard: &quot;rs_wa_3&quot;, shardHost: &quot;rs_wa_3/shard3_rs1:27018,shard3_rs2:27018,shard3_rs3:27018&quot; } 0x7f38ffb1b9e0&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018] got not master for: shard3_rs2:27018&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;Mon Sep 17 18:17:46 [WriteBackListener-shard3_rs1:27018]        setShardVersion failed!&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;{ errmsg: &quot;not master&quot;, note: &quot;from post init in setShardVersion&quot;, errmsg: &quot;&quot;, ok: 0.0 }&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;Received signal 11&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;Backtrace: 0x8386d5 0x7f38ffbd8230 &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;mongos(_ZN5mongo17printStackAndExitEi+0x75)[0x8386d5]&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;/lib/libc.so.6(+0x32230)[0x7f38ffbd8230]&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;===&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
                            <comment id="165062" author="gregor" created="Mon, 17 Sep 2012 16:21:25 +0000"  >&lt;p&gt;@Daniel can you upload a mongos log with loglevel set to 2?&lt;/p&gt;</comment>
                            <comment id="164992" author="mongo-daniel" created="Mon, 17 Sep 2012 14:35:01 +0000"  >&lt;p&gt;I have exactly the same error here. The PRIMARY member tries to change an then it crashes:&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;WriteBackListener exception : DBClientBase::findN: transport error: member1:27018 ns: admin.$cmd query: { writebacklisten: ObjectId(&apos;50572fea6e34dd533b7f4bb1&apos;) }&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;[...]&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;Mon Sep 17 16:32:32 [conn2] got not master for: member1:27018&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;Received signal 11&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;Backtrace: 0x8386d5 0x7f5bb706e230 0xc61e30 &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;mongos(_ZN5mongo17printStackAndExitEi+0x75)[0x8386d5]&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;/lib/libc.so.6(+0x32230)[0x7f5bb706e230]&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;mongos(_ZTVN5mongo18DBClientConnectionE+0x10)[0xc61e30]&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;===&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
                            <comment id="164290" author="tfort" created="Thu, 13 Sep 2012 23:58:24 +0000"  >&lt;p&gt;I&apos;ll get the debug info for you tomorrow.  We&apos;re currently testing out a short term work around by setting all secondaries to priority:0 and living with a lack of write redundancy.  We&apos;re waiting for the consequences during our balancer window.    &lt;/p&gt;</comment>
                            <comment id="164243" author="greg_10gen" created="Thu, 13 Sep 2012 22:16:58 +0000"  >&lt;p&gt;Are you sure the logLevel is set to 2?  There should be additional information about the isMaster values and the replica set if so.  You can check directly at runtime with:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://docs.mongodb.org/manual/reference/command/setParameter/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/reference/command/setParameter/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;If you set the logLevel, you should see output showing the previous logLevel (so if you set twice, you can be sure the setting was acknowledged).&lt;/p&gt;

&lt;p&gt;Very much looks like some sort of race condition and we&apos;ll start looking, but the information returned by the replica set members would be extremely helpful here (it&apos;s reported at loglevel &amp;gt;=1).  &lt;/p&gt;</comment>
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