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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-40808] Recovering a transaction&apos;s outcome should block if the participant is in prepare</title>
                <link>https://jira.mongodb.org/browse/SERVER-40808</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Since with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-40806&quot; title=&quot;Router should choose first *write* participant shard as transaction recovery shard&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-40806&quot;&gt;&lt;del&gt;SERVER-40806&lt;/del&gt;&lt;/a&gt;, the recovery shard and coordinator shard can be different, it&apos;s possible for recovering the transaction&apos;s outcome to find the a participant in prepare.&lt;/p&gt;

&lt;p&gt;For example:&lt;/p&gt;

&lt;p&gt;1) client sends commit to original mongos&lt;br/&gt;
2) mongos hands off commit to coordinator&lt;br/&gt;
3) coordinator sends prepares&lt;br/&gt;
4) client sends &quot;recover&quot; commit to different mongos&lt;br/&gt;
5) different mongos tries to recover from the recovery shard, which is not necessarily the coordinator shard, and so doesn&apos;t necessarily have a coordinator in its in-memory catalog. so, the recovery shard node tries to recover from its local participant and finds the local participant in prepare&lt;/p&gt;

&lt;p&gt;Recovering a transaction&apos;s outcome should be changed to block until the participant has finished committing or aborting the transaction.&lt;/p&gt;</description>
                <environment></environment>
        <key id="744629">SERVER-40808</key>
            <summary>Recovering a transaction&apos;s outcome should block if the participant is in prepare</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="13201">Fixed</resolution>
                                        <assignee username="esha.maharishi@mongodb.com">Esha Maharishi</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                            <label>ShardedTxn:ReadOnly</label>
                    </labels>
                <created>Wed, 24 Apr 2019 18:59:25 +0000</created>
                <updated>Sun, 29 Oct 2023 22:21:42 +0000</updated>
                            <resolved>Thu, 2 May 2019 19:16:45 +0000</resolved>
                                                    <fixVersion>4.1.11</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2232666" author="xgen-internal-githook" created="Thu, 2 May 2019 19:16:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;esha.maharishi@mongodb.com&apos;, &apos;name&apos;: &apos;Esha Maharishi&apos;, &apos;username&apos;: &apos;EshaMaharishi&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-40808&quot; title=&quot;Recovering a transaction&amp;#39;s outcome should block if the participant is in prepare&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-40808&quot;&gt;&lt;del&gt;SERVER-40808&lt;/del&gt;&lt;/a&gt; Recovering a transaction&apos;s outcome should block if the participant is in prepare&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2d54db5b603d8ac3d4529f773614db36ab1298e6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2d54db5b603d8ac3d4529f773614db36ab1298e6&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="631366">SERVER-38028</issuekey>
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