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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-42838] A slow thread in forceShardFilteringMetadataRefresh can reset the shard&apos;s filtering metadata to UNSHARDED</title>
                <link>https://jira.mongodb.org/browse/SERVER-42838</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;A shard refreshes its filtering metadata by first &lt;a href=&quot;https://github.com/mongodb/mongo/blob/c0ca6049bad1bf918e46d83cddab134b7441abf7/src/mongo/db/s/shard_filtering_metadata_refresh.cpp#L151-L153&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;refreshing its CatalogCache&lt;/a&gt;, then using the fresh routing info from its CatalogCache to populate its filtering metadata.&lt;/p&gt;

&lt;p&gt;There are&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/c0ca6049bad1bf918e46d83cddab134b7441abf7/src/mongo/db/s/shard_filtering_metadata_refresh.cpp#L203-L206&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;checks&lt;/a&gt; to ensure a shard does not overwrite newer routing info for a sharded collection with older routing info, but there is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/c0ca6049bad1bf918e46d83cddab134b7441abf7/src/mongo/db/s/shard_filtering_metadata_refresh.cpp#L156-L164&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;no such check&lt;/a&gt; (and there can&apos;t be by design) to prevent the shard from overwriting routing info for a sharded collection with unsharded routing info.&lt;/p&gt;</description>
                <environment></environment>
        <key id="897861">SERVER-42838</key>
            <summary>A slow thread in forceShardFilteringMetadataRefresh can reset the shard&apos;s filtering metadata to UNSHARDED</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="3">Duplicate</resolution>
                                        <assignee username="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                            <label>pm-1051-legacy-tickets</label>
                            <label>sharding-DDL-bugs</label>
                            <label>sharding-common-backlog</label>
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                <created>Thu, 15 Aug 2019 21:39:12 +0000</created>
                <updated>Thu, 30 Mar 2023 08:55:19 +0000</updated>
                            <resolved>Thu, 30 Mar 2023 08:55:19 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
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            <issuekey id="2005422">SERVER-64730</issuekey>
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