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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-60730] shardsvrDropDatabase should always join existing coordinator</title>
                <link>https://jira.mongodb.org/browse/SERVER-60730</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In the following scenario taken from the description of the linked BF, a drop database command can return that the operation was completed successfully when the database was actually not dropped. The drop database command should check the version of the existing coordinator to ensure that it is not joining the coordinator for a different database.&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;the test creates unsharded collection &quot;test.coll&quot;&lt;/li&gt;
	&lt;li&gt;mongos sends a _shardsvrDropDatabase to the primary shard s0:n0&lt;/li&gt;
	&lt;li&gt;s0:n0 start a drop database coordinator dropDBcor_1&lt;/li&gt;
	&lt;li&gt;s0:n0 drop &quot;test.coll&quot;&lt;/li&gt;
	&lt;li&gt;s0:n0 manage to drop the database &quot;test&quot; (&lt;a href=&quot;https://github.com/mongodb/mongo/blob/16d4013b9dc4ad4814a1b586278ebb7e95e340c6/src/mongo/db/s/drop_database_coordinator.cpp#L313-L314&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;by removing the db entry in the config.databases&lt;/a&gt;) but the coordinator (dropDBcor_1) is still running.&lt;/li&gt;
	&lt;li&gt;s0:n0 steps down and s0:n1 became the new primary of shard 0&lt;/li&gt;
	&lt;li&gt;mongos receives an InterruptedDueToReplStateChange on the original _shardsvrDropDatabase command&lt;/li&gt;
	&lt;li&gt;mongos retries the dropDatabase command but find out that the database have been already dropped. So it will simply return OK to the client&lt;/li&gt;
	&lt;li&gt;mongos creates new database and collection &quot;test.coll&quot; while the old coordinator (dropDBcor_1) is still running.&lt;/li&gt;
	&lt;li&gt;mongos attempts to drop the database &quot;test&quot; for the second time by sending a _shardsvrDropDatabase to s0:n1 and since dropDBcor_1 is still running it will join it. The problem is that `dropDBcor_1` is already at a late stage of the execution (running the cleanup phase) and it won&apos;t drop again the database.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="1899268">SERVER-60730</key>
            <summary>shardsvrDropDatabase should always join existing coordinator</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="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                    </labels>
                <created>Fri, 15 Oct 2021 06:36:58 +0000</created>
                <updated>Sun, 29 Oct 2023 21:47:21 +0000</updated>
                            <resolved>Tue, 16 Nov 2021 15:25:44 +0000</resolved>
                                    <version>5.0.3</version>
                    <version>5.1.0-rc0</version>
                                    <fixVersion>5.2.0</fixVersion>
                    <fixVersion>5.0.5</fixVersion>
                    <fixVersion>5.1.1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4154062" author="xgen-internal-githook" created="Thu, 28 Oct 2021 11:48:16 +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-60730&quot; title=&quot;shardsvrDropDatabase should always join existing coordinator&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60730&quot;&gt;&lt;del&gt;SERVER-60730&lt;/del&gt;&lt;/a&gt; shardsvrDropDatabase should always join existing coordinator&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 0bd0ddfb1d6875c3ce4390d30e0566b107256f29)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/19a776401ec32e4c1d796defaa6c2cd75b43ab2e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/19a776401ec32e4c1d796defaa6c2cd75b43ab2e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4153767" author="xgen-internal-githook" created="Thu, 28 Oct 2021 08:39:35 +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-60730&quot; title=&quot;shardsvrDropDatabase should always join existing coordinator&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60730&quot;&gt;&lt;del&gt;SERVER-60730&lt;/del&gt;&lt;/a&gt; shardsvrDropDatabase should always join existing coordinator&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 0bd0ddfb1d6875c3ce4390d30e0566b107256f29)&lt;br/&gt;
Branch: v5.1&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8def1746e85ab88314e4b2af3c2850ce580db1a7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8def1746e85ab88314e4b2af3c2850ce580db1a7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4147498" author="xgen-internal-githook" created="Tue, 26 Oct 2021 07:57:17 +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-60730&quot; title=&quot;shardsvrDropDatabase should always join existing coordinator&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60730&quot;&gt;&lt;del&gt;SERVER-60730&lt;/del&gt;&lt;/a&gt; shardsvrDropDatabase should always join existing coordinator&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0bd0ddfb1d6875c3ce4390d30e0566b107256f29&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0bd0ddfb1d6875c3ce4390d30e0566b107256f29&lt;/a&gt;&lt;/p&gt;</comment>
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