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    <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-66984] config.transactions collection may end up not having the &quot;parentLsid&quot; partial index if the primary steps down or shuts down while setting up the collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-66984</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Here is the scenario:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;node0 steps up and creates the config.transactions collection but steps down before creating the partial index&lt;/li&gt;
	&lt;li&gt;node0 or some other node steps up and sees that the collection has already exists so it &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0a861695ec2d921f47001ac67d96f9a592547cf3/src/mongo/db/session_catalog_mongod.cpp#L339&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;skips&lt;/a&gt;&#160;creating the partial index.&lt;/li&gt;
	&lt;li&gt;the replica set ends up without the partial index forever.&#160;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;The issue is that we create the collection and the partial index in two separate oplog entries, and failover/restart can occur between those two writes. This can be solved by also creating the index if the collection exists but is empty and doesn&apos;t already have the index since the two writes are split, the collection should remain empty upon recovery.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2060983">SERVER-66984</key>
            <summary>config.transactions collection may end up not having the &quot;parentLsid&quot; partial index if the primary steps down or shuts down while setting up the collection</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="13201">Fixed</resolution>
                                        <assignee username="jason.zhang@mongodb.com">Jason Zhang</assignee>
                                    <reporter username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</reporter>
                        <labels>
                    </labels>
                <created>Thu, 2 Jun 2022 20:13:31 +0000</created>
                <updated>Sun, 29 Oct 2023 21:37:22 +0000</updated>
                            <resolved>Wed, 15 Jun 2022 13:36:56 +0000</resolved>
                                                    <fixVersion>6.0.0-rc11</fixVersion>
                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4618646" author="xgen-internal-githook" created="Wed, 15 Jun 2022 18:43:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Zhang&apos;, &apos;email&apos;: &apos;jason.zhang@mongodb.com&apos;, &apos;username&apos;: &apos;jz1242&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66984&quot; title=&quot;config.transactions collection may end up not having the &amp;quot;parentLsid&amp;quot; partial index if the primary steps down or shuts down while setting up the collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66984&quot;&gt;&lt;del&gt;SERVER-66984&lt;/del&gt;&lt;/a&gt; config.transactions collection may end up not having the &quot;parentLsid&quot; partial index if the primary steps down or shuts down while setting up the collection&lt;/p&gt;

&lt;p&gt;(cherry picked from commit f9a3cf210791c19cc2d8569d0a7837745838d0cb)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/952ed79880ec280dce20c95ce3b178036d366771&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/952ed79880ec280dce20c95ce3b178036d366771&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4615767" author="xgen-internal-githook" created="Tue, 14 Jun 2022 20:03:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Zhang&apos;, &apos;email&apos;: &apos;jason.zhang@mongodb.com&apos;, &apos;username&apos;: &apos;jz1242&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66984&quot; title=&quot;config.transactions collection may end up not having the &amp;quot;parentLsid&amp;quot; partial index if the primary steps down or shuts down while setting up the collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66984&quot;&gt;&lt;del&gt;SERVER-66984&lt;/del&gt;&lt;/a&gt; config.transactions collection may end up not having the &quot;parentLsid&quot; partial index if the primary steps down or shuts down while setting up the collection&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f9a3cf210791c19cc2d8569d0a7837745838d0cb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f9a3cf210791c19cc2d8569d0a7837745838d0cb&lt;/a&gt;&lt;/p&gt;</comment>
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