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    <title>MongoDB Jira</title>
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    <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-48675] Simple 4.4.0-rc7 repset test - restarted member not catching up on oplog [or count drift]</title>
                <link>https://jira.mongodb.org/browse/SERVER-48675</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Simple replicat set test of 3 mongod servers as part of one replica set&#160; works fine on 4.2.6 and many other earlier versions of mongodb over the years.&lt;/p&gt;

&lt;p&gt;Just tried on&#160;4.4.0-rc7 and when a primary is killed and then restarted it does not seem to catch-up on the oplog.&lt;/p&gt;

&lt;p&gt;To reproduce follow&#160;this process:&#160;&lt;a href=&quot;https://github.com/pkdone/MongoDB-AUTO-HA&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/pkdone/MongoDB-AUTO-HA&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;More info to follow below&lt;/p&gt;</description>
                <environment>Ubuntu 20.04</environment>
        <key id="1376440">SERVER-48675</key>
            <summary>Simple 4.4.0-rc7 repset test - restarted member not catching up on oplog [or count drift]</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="bruce.lucas@mongodb.com">Bruce Lucas</assignee>
                                    <reporter username="paul.done@mongodb.com">Paul Done</reporter>
                        <labels>
                    </labels>
                <created>Tue, 9 Jun 2020 19:48:35 +0000</created>
                <updated>Thu, 13 May 2021 16:22:59 +0000</updated>
                            <resolved>Thu, 13 May 2021 16:22:59 +0000</resolved>
                                    <version>4.4.0-rc7</version>
                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="3203441" author="dan@10gen.com" created="Wed, 10 Jun 2020 16:15:19 +0000"  >&lt;p&gt;Wonder if this is just a side effect of &#8220;replicate before journaling&#8221;&lt;/p&gt;</comment>
                            <comment id="3200922" author="paul.done" created="Tue, 9 Jun 2020 21:08:40 +0000"  >&lt;p&gt;As per last comment - probably works as intended&lt;/p&gt;</comment>
                            <comment id="3198059" author="bruce.lucas@10gen.com" created="Tue, 9 Jun 2020 20:03:27 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=paul.done&quot; class=&quot;user-hover&quot; rel=&quot;paul.done&quot;&gt;paul.done&lt;/a&gt; can you please attach log files and ftdc (diagnostic.data) for the whole replica set covering a test, along with a timeline - when did you start the test, when did you do the node restart?&lt;/p&gt;</comment>
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                <attachments>
                            <attachment id="268331" name="SERVER-48675-440-rc11.tgz" size="610940" author="jake.mcinteer@mongodb.com" created="Thu, 2 Jul 2020 13:33:56 +0000"/>
                            <attachment id="265690" name="SERVER-48675.png" size="81729" author="dmitry.agranat@mongodb.com" created="Thu, 11 Jun 2020 09:10:34 +0000"/>
                            <attachment id="265551" name="server-48765.tgz" size="509077" author="jake.mcinteer@mongodb.com" created="Wed, 10 Jun 2020 15:41:23 +0000"/>
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                            <customfieldvalue>&lt;p&gt;Follow this process:&#160;&lt;a href=&quot;https://github.com/pkdone/MongoDB-AUTO-HA&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/pkdone/MongoDB-AUTO-HA&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;In&#160;&lt;tt&gt;mointor.sh replace .countDocuments({})&lt;/tt&gt; with the old method that was being used:&#160;&lt;tt&gt;.count()&lt;/tt&gt;&lt;/p&gt;

&lt;p&gt;Increase the rate of document insertion by reducing the sleep in&#160;&lt;tt&gt;insert.py&lt;/tt&gt;&#160;from 0.025s to 0.005s to make the count variance appear faster/more obvious&lt;/p&gt;

&lt;p&gt;Ensure laptop/workstation is under load/strain and you may need to kill three or four primaries before witnessing the behaviour&lt;/p&gt;</customfieldvalue>

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