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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-65930] DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error</title>
                <link>https://jira.mongodb.org/browse/SERVER-65930</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Each DDL coordinator is calling &lt;a href=&quot;https://github.com/mongodb/mongo/blob/35453bdcfecf00c1fa4fde5289545439171313da/src/mongo/db/s/sharding_ddl_coordinator.h#L119-L129&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;_inserStateDocument&lt;/a&gt; to initially checkpoint the received operation on disk. Since the write is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/35453bdcfecf00c1fa4fde5289545439171313da/src/mongo/db/s/sharding_ddl_coordinator.h#L126&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;using a concern with timeout&lt;/a&gt; , it could happen the following:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;DDL coordinator starts and calls &lt;tt&gt;_insertStateDocument&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;The document is locally written but not yet majority committed&lt;/li&gt;
	&lt;li&gt;The write concern timeout is hit&lt;/li&gt;
	&lt;li&gt;The coordinator retries&lt;/li&gt;
	&lt;li&gt;The retry fails because the document had already been inserted so a &lt;tt&gt;DuplicateKey&lt;/tt&gt; error is thrown&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;In some cases, such as for &lt;tt&gt;renameCollection&lt;/tt&gt;, the result is that the DDL coordinator document remains on disk but the in-memory instance is released because of the exception. When this happens, the only way to resume the coordinator is either having the user invoke again the operation, either having a new node stepping on the source database&apos;s primary shard.&lt;/p&gt;

&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;EDIT&amp;#93;&lt;/span&gt; Also the rename participant can incur in the same problem since the implemented logic is the same.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2032531">SERVER-65930</key>
            <summary>DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error</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="allison.easton@mongodb.com">Allison Easton</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Mon, 25 Apr 2022 18:17:00 +0000</created>
                <updated>Sun, 29 Oct 2023 21:39:03 +0000</updated>
                            <resolved>Mon, 16 May 2022 17:55:27 +0000</resolved>
                                                    <fixVersion>5.3.2</fixVersion>
                    <fixVersion>6.0.0-rc7</fixVersion>
                    <fixVersion>5.0.10</fixVersion>
                    <fixVersion>6.1.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4558990" author="xgen-internal-githook" created="Thu, 19 May 2022 12:10:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Allison Easton&apos;, &apos;email&apos;: &apos;allison.easton@mongodb.com&apos;, &apos;username&apos;: &apos;allisoneaston&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65930&quot; title=&quot;DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65930&quot;&gt;&lt;del&gt;SERVER-65930&lt;/del&gt;&lt;/a&gt; DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 1eb5a9257b3bfc0c768b342d73c3668cc6566841)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ea66e125bf6368da4146c1d8974c595e29787542&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ea66e125bf6368da4146c1d8974c595e29787542&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4558927" author="xgen-internal-githook" created="Thu, 19 May 2022 11:37:51 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Allison Easton&apos;, &apos;email&apos;: &apos;allison.easton@mongodb.com&apos;, &apos;username&apos;: &apos;allisoneaston&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65930&quot; title=&quot;DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65930&quot;&gt;&lt;del&gt;SERVER-65930&lt;/del&gt;&lt;/a&gt; DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 1eb5a9257b3bfc0c768b342d73c3668cc6566841)&lt;br/&gt;
Branch: v5.3&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2bd6810b6afe06530969d77ffd3931978feef8c3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2bd6810b6afe06530969d77ffd3931978feef8c3&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4552520" author="xgen-internal-githook" created="Tue, 17 May 2022 12:03:54 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Allison Easton&apos;, &apos;email&apos;: &apos;allison.easton@mongodb.com&apos;, &apos;username&apos;: &apos;allisoneaston&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65930&quot; title=&quot;DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65930&quot;&gt;&lt;del&gt;SERVER-65930&lt;/del&gt;&lt;/a&gt; DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1a44e197ee6d2e8ebdec97f8fd817619e84aacaa&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1a44e197ee6d2e8ebdec97f8fd817619e84aacaa&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4550763" author="xgen-internal-githook" created="Mon, 16 May 2022 17:45:43 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Allison Easton&apos;, &apos;email&apos;: &apos;allison.easton@mongodb.com&apos;, &apos;username&apos;: &apos;allisoneaston&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65930&quot; title=&quot;DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65930&quot;&gt;&lt;del&gt;SERVER-65930&lt;/del&gt;&lt;/a&gt; DDL coordinators and rename participant initial checkpoint may incur in DuplicateKey error&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1eb5a9257b3bfc0c768b342d73c3668cc6566841&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1eb5a9257b3bfc0c768b342d73c3668cc6566841&lt;/a&gt;&lt;/p&gt;</comment>
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                    <name>Duplicate</name>
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            <issuekey id="2019582">SERVER-65340</issuekey>
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            <issuekey id="2043125">SERVER-66336</issuekey>
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