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    <title>MongoDB Jira</title>
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    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-66725] Make incoming retryable transactions abort conflicting transactions once</title>
                <link>https://jira.mongodb.org/browse/SERVER-66725</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When a new retryable transaction runs on a mongod and a retryable transaction for the same client retryable write (ie same txnNumber in the session id) is active, the incoming transaction must wait for the existing transaction to complete, which happens via throwing a RetryableTransactionInProgress exception. This is meant to avoid a livelock if multiple routers are running the same client retryable write that requires retryable transactions, e.g. after a network error between a client and a mongos that leads the client to retry on a different mongos. A downside of this is if the router for the existing transaction has crashed or otherwise given up (e.g. after certain Interruption errors) the incoming transaction from the retry will wait for the existing transaction to time out. In practice, it is likely the original router has stopped running the transaction if a retry arrives, so the retry should interrupt the existing transaction. But to prevent livelocks if the original router is still running, only the first conflict should cause an interruption.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2053875">SERVER-66725</key>
            <summary>Make incoming retryable transactions abort conflicting transactions once</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="jack.mulrow@mongodb.com">Jack Mulrow</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                    </labels>
                <created>Tue, 24 May 2022 15:37:09 +0000</created>
                <updated>Sun, 29 Oct 2023 21:37:49 +0000</updated>
                            <resolved>Thu, 9 Jun 2022 20:32:55 +0000</resolved>
                                                    <fixVersion>6.0.0-rc10</fixVersion>
                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4606002" author="xgen-internal-githook" created="Thu, 9 Jun 2022 23:05:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jack Mulrow&apos;, &apos;email&apos;: &apos;jack.mulrow@mongodb.com&apos;, &apos;username&apos;: &apos;jsmulrow&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66725&quot; title=&quot;Make incoming retryable transactions abort conflicting transactions once&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66725&quot;&gt;&lt;del&gt;SERVER-66725&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66659&quot; title=&quot;Abort internal transactions for the previous txnNumber when starting a new txnNumber&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66659&quot;&gt;&lt;del&gt;SERVER-66659&lt;/del&gt;&lt;/a&gt; Incoming retryable txns abort old txns and abort conflicting txns once&lt;/p&gt;

&lt;p&gt;(cherry picked from commit bc385b8dcb5b7a550cefaada9d44bc9ded5164de)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d12805a9e4af786e564ac21add3391aa7aaf8409&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d12805a9e4af786e564ac21add3391aa7aaf8409&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4605604" author="xgen-internal-githook" created="Thu, 9 Jun 2022 19:30:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jack Mulrow&apos;, &apos;email&apos;: &apos;jack.mulrow@mongodb.com&apos;, &apos;username&apos;: &apos;jsmulrow&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66725&quot; title=&quot;Make incoming retryable transactions abort conflicting transactions once&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66725&quot;&gt;&lt;del&gt;SERVER-66725&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66659&quot; title=&quot;Abort internal transactions for the previous txnNumber when starting a new txnNumber&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66659&quot;&gt;&lt;del&gt;SERVER-66659&lt;/del&gt;&lt;/a&gt; Incoming retryable txns abort old txns and abort conflicting txns once&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bc385b8dcb5b7a550cefaada9d44bc9ded5164de&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bc385b8dcb5b7a550cefaada9d44bc9ded5164de&lt;/a&gt;&lt;/p&gt;</comment>
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