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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-10274] repl writer worker clients in op list</title>
                <link>https://jira.mongodb.org/browse/SERVER-10274</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I have a 3-server replica set with 1 arbiter. &lt;/p&gt;

&lt;p&gt;On the slave I see &quot;repl writer worker&quot; 1-4 all with an &quot;X&quot; in the locking column. Right now RWW 1 and 2 have 20 and 30 seconds respectively. 3-4 have 1271310 as the secs running.&lt;/p&gt;

&lt;p&gt;On the master I see repl writer worker 1-6 and all are marked as locking. Also on the master are rsSync and rsSyncNotifier and both list &quot;index: (3/3) btree-middle&quot; in the &quot;msg&quot; column and have done for days now.&lt;/p&gt;

&lt;p&gt;Is this some sort of problem, or is this just some new debug data that has been added in 2.4.5? (I don&apos;t remember ever seeing this in previous 2.4.x versions).&lt;/p&gt;</description>
                <environment>rhel6</environment>
        <key id="82995">SERVER-10274</key>
            <summary>repl writer worker clients in op list</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="-1">Unassigned</assignee>
                                    <reporter username="niccottrell">Nic Cottrell (Personal)</reporter>
                        <labels>
                    </labels>
                <created>Sun, 21 Jul 2013 11:26:25 +0000</created>
                <updated>Wed, 10 Dec 2014 23:11:21 +0000</updated>
                            <resolved>Thu, 25 Jul 2013 14:37:56 +0000</resolved>
                                    <version>2.4.5</version>
                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="388605" author="dan@10gen.com" created="Thu, 25 Jul 2013 14:37:57 +0000"  >&lt;p&gt;The repl write workers stick around even when the node is primary &amp;#8211; they just aren&apos;t doing anything.  It&apos;s normal.  To see ALL ops that are listed in the web console, pass &quot;true&quot; to currentOp:  &lt;tt&gt;db.currentOp(true)&lt;/tt&gt;.&lt;/p&gt;</comment>
                            <comment id="388414" author="niccottrell" created="Thu, 25 Jul 2013 06:53:14 +0000"  >&lt;p&gt;Well, if the repl workers are supposed to be showing up in the the op list like that, this I guess this is just a &quot;working as designed&quot; ticket...&lt;/p&gt;</comment>
                            <comment id="388339" author="dan@10gen.com" created="Thu, 25 Jul 2013 03:30:41 +0000"  >&lt;p&gt;yes, background flush times and iowait look a bit high on the secondary, but they appear to be coming down since the july 21st.  your disks are probably a bit overworked  moving MySQL instance will probably help more.  Do you have a specific question or bug to report?&lt;/p&gt;</comment>
                            <comment id="386811" author="niccottrell" created="Tue, 23 Jul 2013 07:08:14 +0000"  >&lt;p&gt;MMS looks ok? I&apos;m panicing about the huge iowait on the secondary (averaging 30%). I think the machine just has too little RAM (40GB) and it running a MySQL instance too. Will move that away soon and hopefully it will recover. Since setting up the replica my unit tests take twice as long so I&apos;m a bit confused.&lt;/p&gt;

&lt;p&gt;I&apos;ve attached the currentOp outputs, so hopefully that sheds some light...&lt;/p&gt;</comment>
                            <comment id="386745" author="dan@10gen.com" created="Tue, 23 Jul 2013 04:31:23 +0000"  >&lt;p&gt;The time running can be incorrectly reported because of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4740&quot; title=&quot;Use monotonic clock sources for Timer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4740&quot;&gt;&lt;del&gt;SERVER-4740&lt;/del&gt;&lt;/a&gt; (See &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2886&quot; title=&quot;Many commands being executed for 1271310319ms,  mongo&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2886&quot;&gt;&lt;del&gt;SERVER-2886&lt;/del&gt;&lt;/a&gt; for better explanation).&lt;/p&gt;

&lt;p&gt;From looking at your cluster in MMS, it looks healthy.  I think that the output of the old ops in the web view are just not being cleared out.  Can you attach the output of db.currentOp() from primary and secondary to the ticket?&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="29124" name="currentOp-primary.txt" size="2810" author="niccottrell" created="Tue, 23 Jul 2013 07:08:02 +0000"/>
                            <attachment id="29125" name="currentOp-secondary.txt" size="2444" author="niccottrell" created="Tue, 23 Jul 2013 07:08:02 +0000"/>
                            <attachment id="29074" name="mongod master.pdf" size="625311" author="niccottrell" created="Sun, 21 Jul 2013 11:26:25 +0000"/>
                            <attachment id="29073" name="mongod slave.pdf" size="155670" author="niccottrell" created="Sun, 21 Jul 2013 11:26:25 +0000"/>
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