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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-84623] Shard-local re-execution of a command might bubble up a misleading StaleConfig exception to the router</title>
                <link>https://jira.mongodb.org/browse/SERVER-84623</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In some cases, when a shard realizes that the filtering metadata is not properly installed, it fails the current execution of the command, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dc6c5974799b479eeaaa3bda2202f54c54031741/src/mongo/db/service_entry_point_common.cpp#L1956-L2000&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;forces a refresh and then it re-executes the original command&lt;/a&gt;. If that refresh ends up failing, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dc6c5974799b479eeaaa3bda2202f54c54031741/src/mongo/db/service_entry_point_common.cpp#L1985-L2002&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the error that is bubbled up to the router is the &lt;tt&gt;StaleConfig&lt;/tt&gt; one and not the new one we got from the refresh&lt;/a&gt;. This behavior for in general makes a lot of sense: the router will retry the whole command and then the shard will execute the same steps as before, hoping that the refresh won&apos;t fail.&lt;/p&gt;

&lt;p&gt;Bubbling up the &lt;tt&gt;StaleConfig&lt;/tt&gt; instead of the proper error might be problematic in some cases, though: imagine that we get a &lt;tt&gt;NotPrimary&lt;/tt&gt; exception. If we bubble up a &lt;tt&gt;StaleConfig&lt;/tt&gt; exception the router won&apos;t realize that the primary has changed, potentially leading to a re-execution of the command with exactly the same consequences until we&#160; exhaust the retries.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2539088">SERVER-84623</key>
            <summary>Shard-local re-execution of a command might bubble up a misleading StaleConfig exception to the router</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="10018" iconUrl="https://jira.mongodb.org/images/icons/statuses/visible.png" description="">In Code Review</status>
                    <statusCategory id="4" key="indeterminate" colorName="inprogress"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="jordi.olivares-provencio@mongodb.com">Jordi Olivares Provencio</assignee>
                                    <reporter username="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</reporter>
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                    </labels>
                <created>Mon, 8 Jan 2024 08:28:42 +0000</created>
                <updated>Tue, 6 Feb 2024 15:42:27 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>4</watches>
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