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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-17524] MongoDB sharding problem</title>
                <link>https://jira.mongodb.org/browse/SERVER-17524</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I have a mongoDB cluster of 3 replication sets &lt;/p&gt;

&lt;p&gt;Getting this error &lt;/p&gt;

&lt;p&gt;id_ObjectId(&apos;54f9ed416aad853b66d0c21f&apos;)&quot;, configdb: &quot;172.31.12.107:27019,172.31.12.93:27019,172.31.12.43:27019&quot; } result: { ok: 0.0, errmsg: &quot;Error locking distributed lock for split. :: caused by :: 13651 error checking clock skew of cluster 172.31.12.107:27019,172.31.12.93:27019,172.31.12..&lt;/p&gt;


&lt;p&gt;Ntp time on these servers are all synced.&lt;/p&gt;

&lt;p&gt;output date of all servers&lt;/p&gt;

&lt;p&gt;        mongo-s3:&lt;br/&gt;
          Tue Mar 10 18:47:41 IST 2015&lt;br/&gt;
        mongo-s2:&lt;br/&gt;
          Tue Mar 10 18:47:41 IST 2015&lt;br/&gt;
        mongo-rt1:&lt;br/&gt;
          Tue Mar 10 18:47:41 IST 2015&lt;br/&gt;
        mongo-p3:&lt;br/&gt;
          Tue Mar 10 18:47:41 IST 2015&lt;br/&gt;
        mongo-s1:&lt;br/&gt;
          Tue Mar 10 18:47:41 IST 2015&lt;br/&gt;
        mongo-p1:&lt;br/&gt;
          Tue Mar 10 18:47:41 IST 2015&lt;br/&gt;
        mongo-p2:&lt;br/&gt;
          Tue Mar 10 18:47:41 IST 2015&lt;/p&gt;

&lt;p&gt;I restarted the cluster keeping ntp up2date , but still same error.&lt;br/&gt;
Please may I know what could be the problem ?&lt;/p&gt;</description>
                <environment></environment>
        <key id="188519">SERVER-17524</key>
            <summary>MongoDB sharding problem</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="randolph@mongodb.com">Randolph Tan</assignee>
                                    <reporter username="girmbhat">Girish Bhat</reporter>
                        <labels>
                    </labels>
                <created>Tue, 10 Mar 2015 13:50:30 +0000</created>
                <updated>Fri, 15 May 2015 17:14:17 +0000</updated>
                            <resolved>Fri, 15 May 2015 17:14:16 +0000</resolved>
                                    <version>2.2.7</version>
                                                    <component>Internal Code</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="915352" author="ramon.fernandez" created="Fri, 15 May 2015 17:14:17 +0000"  >&lt;p&gt;Looks like the issue went away so we&apos;re resolving this ticket. If the issue reappears please feel free to reopen.&lt;/p&gt;</comment>
                            <comment id="848903" author="girmbhat" created="Wed, 11 Mar 2015 15:44:31 +0000"  >
&lt;p&gt;Hi ,&lt;/p&gt;

&lt;p&gt;When I posted the logs it was not working, I had the same time skew error. &lt;br/&gt;
Just few minutes back when I checked these errors are not at all there. Strange.&lt;/p&gt;</comment>
                            <comment id="848877" author="renctan" created="Wed, 11 Mar 2015 15:28:53 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;I don&apos;t see the errors from the mongod logs you posted (both logs show successful distributed lock acquisition). Are these the log level 1 logs when the skew exception happened?&lt;/p&gt;

&lt;p&gt;Thanks!&lt;/p&gt;</comment>
                            <comment id="848592" author="girmbhat" created="Wed, 11 Mar 2015 09:41:24 +0000"  >&lt;p&gt;Hi , &lt;/p&gt;


&lt;p&gt;Added logs from rs0 primary replication set. &lt;br/&gt;
Only added for &quot;conn159&quot; &lt;br/&gt;
&lt;a href=&quot;http://pastebin.com/QTNXgMdv&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://pastebin.com/QTNXgMdv&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;For &quot;conn202&quot; &lt;br/&gt;
&lt;a href=&quot;http://pastebin.com/xwXQAZmi&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://pastebin.com/xwXQAZmi&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;FYI, there are 4 shards in the cluster. &quot;rs0&quot; has data and rest of won&apos;t . Enabled shards for collection in rs0.&lt;br/&gt;
Please let me know if you want more logs.&lt;/p&gt;</comment>
                            <comment id="847892" author="renctan" created="Tue, 10 Mar 2015 18:47:39 +0000"  >&lt;p&gt;Sorry, I meant to ask for the more verbose log on the primaries. And in particular, the primary where the split was sent to. For example, in the case of the paste bin logs, the verbose logs from the primary of rs0 when the error occurred.&lt;/p&gt;

&lt;p&gt;Thanks!&lt;/p&gt;</comment>
                            <comment id="847790" author="girmbhat" created="Tue, 10 Mar 2015 17:44:35 +0000"  >&lt;p&gt;&lt;br/&gt;
FYI, Also  hwclock is in sync.&lt;/p&gt;</comment>
                            <comment id="847771" author="girmbhat" created="Tue, 10 Mar 2015 17:32:31 +0000"  >&lt;p&gt;Hi  Randolph Tan ,&lt;/p&gt;

&lt;p&gt;The time is same for all config servers. please look into it.&lt;/p&gt;

&lt;p&gt;OS : CentOS 7.5  (Hosted on Amazon EC2)&lt;/p&gt;

&lt;p/&gt;
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					&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;mongo-s2 ~]$ echo &quot;db.serverStatus()&quot; | mongo --port 27019 | grep localTime&lt;/span&gt;&lt;/pre&gt;
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						&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;	&quot;localTime&quot; : ISODate(&quot;2015-03-10T16:08:11.772Z&quot;)&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
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						&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;-mongo-s1 ~]$ echo &quot;db.serverStatus()&quot; | mongo --port 27019 | grep localTime&lt;/span&gt;&lt;/pre&gt;
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						&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;	&quot;localTime&quot; : ISODate(&quot;2015-03-10T16:08:11.788Z&quot;),&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
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						&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;mongo-s3 ~]$ echo &quot;db.serverStatus()&quot; | mongo --port 27019 | grep localTime&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;Logs pasted below &lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://pastebin.com/qrJuPMp2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://pastebin.com/qrJuPMp2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="847543" author="renctan" created="Tue, 10 Mar 2015 14:46:36 +0000"  >&lt;p&gt;What platform and OS are running this on? The clock skew checking code uses the &lt;a href=&quot;http://docs.mongodb.org/manual/reference/command/serverStatus/#serverStatus.localTime&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;localtime&lt;/a&gt; from the serverStatus command from each of the config servers for this check. Can you also try increasing the &lt;a href=&quot;http://docs.mongodb.org/manual/reference/parameters/#param.logLevel&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;log level&lt;/a&gt; to 1?&lt;/p&gt;

&lt;p&gt;Thanks!&lt;/p&gt;</comment>
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