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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-11211] Mongo improperly updates config.databases collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-11211</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The mongos due to errors, including network errors beyond our control, can have a wrong world view where databases that do exist are reported not to.  When the database is accessed the mongos treats it like a new database.  This leads to the mongos then upserting into the config.databases collection the wrong information: that the database named is non-sharded.  This causes significant errors with mongodb systems.&lt;br/&gt;
If the mongos uses an insert against the config database which fails when a database with that name already exists, the mongos will properly get an error when it&#8217;s world view is incorrect, and will not corrupt the config server&#8217;s database.  At this point the mongos should also reload it&#8217;s data so that it has a correct world view.&lt;/p&gt;

&lt;p&gt;This change would isolate the error to the mongos instead of propagating it&apos;s error state to the entire system.&lt;/p&gt;</description>
                <environment></environment>
        <key id="94429">SERVER-11211</key>
            <summary>Mongo improperly updates config.databases collection</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="charlie.page@10gen.com">Charlie Page</reporter>
                        <labels>
                    </labels>
                <created>Wed, 16 Oct 2013 15:35:32 +0000</created>
                <updated>Tue, 6 Dec 2022 05:16:08 +0000</updated>
                            <resolved>Thu, 15 Nov 2018 15:52:34 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2063274" author="greg.mckeon" created="Thu, 15 Nov 2018 15:52:34 +0000"  >&lt;p&gt;This will become impossible once we do PM-1051, so closing this ticket.&lt;/p&gt;</comment>
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