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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-28808] (v3.2) applyChunkOpsDeprecated should do a write before trying to confirm the migration commit (applyOps) succeeded despite errors</title>
                <link>https://jira.mongodb.org/browse/SERVER-28808</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;BF-5149 (v3.2 failure) is an fassert in the migration critical section, where the shard cannot tell whether the commit was successful or not. This is because it tries to check whether the applyOps succeeded or not by doing a followup query. However, this query can be sent to secondaries, and the shard does not always have the latest config opTime to make sure what is seen on the secondary is the latest information.&lt;/p&gt;

&lt;p&gt;v3.4 changes the behavior by trying to do a successful write to the config primary, so as the acquire the latest config opTime, before sending the query that can target secondaries. We could add the same thing to v3.2.&lt;/p&gt;

&lt;p&gt;This solution doesn&apos;t cover all edge cases. For v3.6, we intend to do &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-26886&quot; title=&quot;Config server shuts down while a migration is in the critical section, causing the shard to fassert on critical command failure.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-26886&quot;&gt;&lt;del&gt;SERVER-26886&lt;/del&gt;&lt;/a&gt; to eliminate the fassert potential, but we don&apos;t currently have any intentions for backport of such a fix.&lt;/p&gt;</description>
                <environment></environment>
        <key id="374163">SERVER-28808</key>
            <summary>(v3.2) applyChunkOpsDeprecated should do a write before trying to confirm the migration commit (applyOps) succeeded despite errors</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="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                    </labels>
                <created>Fri, 14 Apr 2017 18:58:45 +0000</created>
                <updated>Mon, 29 Jan 2018 18:34:43 +0000</updated>
                            <resolved>Mon, 8 May 2017 18:14:13 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1567075" author="dianna.hohensee" created="Mon, 8 May 2017 18:14:13 +0000"  >&lt;p&gt;Closing as won&apos;t fix. The dependent BFs have been marked as trivial. Any new related v3.2 BFs should be marked as trivial as well.&lt;/p&gt;</comment>
                            <comment id="1551631" author="kaloian.manassiev" created="Tue, 18 Apr 2017 15:40:53 +0000"  >&lt;p&gt;Since it is only 3.2 we won&apos;t fix it. Assigning to Dianna to close and figure out what to do with the build failures.&lt;/p&gt;</comment>
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