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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-58509] The transition from nss-based names to uuid-based names of config.cache.chunk.* collections should be majority committed</title>
                <link>https://jira.mongodb.org/browse/SERVER-58509</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The current implementation of &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ab411472611ec7139a9be3fc621e06323764fdc4/src/mongo/db/s/shard_server_catalog_cache_loader.cpp#L715-L757&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;ShardServerCatalogCacheLoader::_waitForTasksToCompleteAndRenameChunks&lt;/tt&gt;&lt;/a&gt; doesn&apos;t wait for the &lt;tt&gt;rename&lt;/tt&gt; operation to be majority committed. This is a problem because the shard might locally think that the operation was completed: it could happen that the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ab411472611ec7139a9be3fc621e06323764fdc4/src/mongo/db/s/shard_server_catalog_cache_loader.cpp#L735&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;timestamp&lt;/tt&gt; was majority committed on &lt;tt&gt;config.cache.collections&lt;/tt&gt;&lt;/a&gt; but not the &lt;tt&gt;renameCollection&lt;/tt&gt;, so the next time that shard does a refresh it will think that the rename was completed.&lt;/p&gt;

&lt;p&gt;After discussing it with &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=pierlauro.sciarelli&quot; class=&quot;user-hover&quot; rel=&quot;pierlauro.sciarelli&quot;&gt;pierlauro.sciarelli&lt;/a&gt;, we agreed that this method should guarantee the following:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;If a call to &lt;tt&gt;ShardServerCatalogCacheLoader::_waitForTasksToCompleteAndRenameChunks&lt;/tt&gt; successfully completes, both &lt;tt&gt;renameOperation&lt;/tt&gt; and &lt;tt&gt;updateTimestampOnShardCollections&lt;/tt&gt; should be majority committed.&lt;/li&gt;
	&lt;li&gt;It should support to be called in a scenario in which the &lt;tt&gt;target&lt;/tt&gt; collection already exists but the &lt;tt&gt;timestamp&lt;/tt&gt; is not present on &lt;tt&gt;config.cache.collections.*&lt;/tt&gt;.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1818305">SERVER-58509</key>
            <summary>The transition from nss-based names to uuid-based names of config.cache.chunk.* collections should be majority committed</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="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</reporter>
                        <labels>
                    </labels>
                <created>Wed, 14 Jul 2021 10:54:07 +0000</created>
                <updated>Sun, 29 Oct 2023 21:50:57 +0000</updated>
                            <resolved>Thu, 15 Jul 2021 12:50:45 +0000</resolved>
                                                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4107626" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:31:43 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3943278" author="xgen-internal-githook" created="Thu, 15 Jul 2021 12:49:12 +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-58509&quot; title=&quot;The transition from nss-based names to uuid-based names of config.cache.chunk.* collections should be majority committed&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58509&quot;&gt;&lt;del&gt;SERVER-58509&lt;/del&gt;&lt;/a&gt; The transition from nss-based names to uuid-based names of config.cache.chunk.* collections should be majority committed&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/331759573b9e60847a605e4d09292293e7cfa472&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/331759573b9e60847a605e4d09292293e7cfa472&lt;/a&gt;&lt;/p&gt;</comment>
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