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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-47366] Check the electionId before updating config.shards</title>
                <link>https://jira.mongodb.org/browse/SERVER-47366</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Before updating config.shards, check to make sure the electionId is not stale. It is possible that the RSM receives two responses with different views of the replica set in the &quot;correct&quot; order (the older reponse before newer), but that the config server receives the writes in the opposite order, thus overwriting the correct entry in config.shards.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1306114">SERVER-47366</key>
            <summary>Check the electionId before updating config.shards</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="janna.golden@mongodb.com">Janna Golden</reporter>
                        <labels>
                    </labels>
                <created>Mon, 6 Apr 2020 20:17:40 +0000</created>
                <updated>Tue, 6 Dec 2022 02:30:32 +0000</updated>
                            <resolved>Thu, 23 Apr 2020 15:57:20 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3052878" author="esha.maharishi@10gen.com" created="Thu, 23 Apr 2020 15:57:20 +0000"  >&lt;p&gt;Closing as Won&apos;t Fix because it has always been possible for config.shards to be updated with stale info.&lt;/p&gt;

&lt;p&gt;This fix would prevent config.shards from getting updated with such stale info that it writes a connection string with none of the current replica set members, making the shard essentially unreachable from a node doing its first ever ShardRegistry reload (e.g., a node that&apos;s restarted) until config.shards is updated with newer info. However, we have not heard any customer reports about this being a problem in practice.&lt;/p&gt;

&lt;p&gt;We can always re-open if we do hear a report.&lt;/p&gt;</comment>
                            <comment id="3041383" author="lamont.nelson" created="Wed, 15 Apr 2020 20:08:30 +0000"  >&lt;p&gt;This part of the shard registry protocol is broken as the persisted data can come from a node who talks to an old primary and overwrite newer information. Changing the status to open since there are no active BF tickets for this particular issue even though such a schedule is possible.&lt;/p&gt;</comment>
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