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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-75494] Wait for dropDatabase finishes at check_metadata_consistency.js</title>
                <link>https://jira.mongodb.org/browse/SERVER-75494</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;With new checks (hiddenShardedCollection) of the &lt;tt&gt;checkMetadataConsistency&lt;/tt&gt; command, there is a possibility that &lt;tt&gt;check_metadata_consistency.js&lt;/tt&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/33d517461a495384361c201022da84f44ddfd3eb/jstests/sharding/check_metadata_consistency.js#L208-L212&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;fails dropping databases and asserting 0 inconsistencies&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The routine of the failure may be the following one:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Introduce HiddenShardedCollection inconsistency by dropping the database entry in config.database and leaving leftover collection entries.&lt;/li&gt;
	&lt;li&gt;Drop database -&amp;gt; since the shards do not find the databases anymore in config.database they won&apos;t actually perform the drop operation and they won&apos;t clear the leftover collections&lt;/li&gt;
	&lt;li&gt;Run cluster level checkMetadataConsistency cmd -&amp;gt; the command will still report the two inconsistencies created in this test case because they were not solved by the drop database operation.&lt;/li&gt;
&lt;/ol&gt;



&lt;p&gt;One solution would be to re-write back the database entries we removed &lt;a href=&quot;https://github.com/mongodb/mongo/blob/c327966123691594c62c796dbca2e490e2545e59/jstests/sharding/check_metadata_consistency.js#L171&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/c327966123691594c62c796dbca2e490e2545e59/jstests/sharding/check_metadata_consistency.js#L163&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;, before to drop the databases&lt;/p&gt;</description>
                <environment></environment>
        <key id="2301957">SERVER-75494</key>
            <summary>Wait for dropDatabase finishes at check_metadata_consistency.js</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="antonio.fuschetto@mongodb.com">Antonio Fuschetto</assignee>
                                    <reporter username="pol.pinol@mongodb.com">Pol Pinol</reporter>
                        <labels>
                    </labels>
                <created>Thu, 30 Mar 2023 11:46:51 +0000</created>
                <updated>Sun, 29 Oct 2023 21:23:58 +0000</updated>
                            <resolved>Mon, 3 Apr 2023 13:35:09 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5318933" author="xgen-internal-githook" created="Mon, 3 Apr 2023 12:01:26 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Antonio Fuschetto&apos;, &apos;email&apos;: &apos;antonio.fuschetto@mongodb.com&apos;, &apos;username&apos;: &apos;afuschetto&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75494&quot; title=&quot;Wait for dropDatabase finishes at check_metadata_consistency.js&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75494&quot;&gt;&lt;del&gt;SERVER-75494&lt;/del&gt;&lt;/a&gt; Wait for dropDatabase finishes at check_metadata_consistency.js&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/93483aa645a36be8d8608018434d22338e203d6b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/93483aa645a36be8d8608018434d22338e203d6b&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2266168">SERVER-74079</issuekey>
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