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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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-64104] Advance TransactionRouter firstStmtId on continue if no participants were targeted</title>
                <link>https://jira.mongodb.org/browse/SERVER-64104</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The TransactionRouter &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dcb787226cdd575ea1c7c95ad6a0b996b3c8b27a/src/mongo/s/transaction_router.h#L802-L804&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;tracks the statement number of the first command it received&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dcb787226cdd575ea1c7c95ad6a0b996b3c8b27a/src/mongo/s/transaction_router.cpp#L960&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;increments its notion of the current statement whenever the transaction is continued&lt;/a&gt;. There are behaviors conditional on if the current statement is the first overall, like &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dcb787226cdd575ea1c7c95ad6a0b996b3c8b27a/src/mongo/s/transaction_router.cpp#L1667-L1672&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;retrying on certain stale config errors&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;If the transaction API is used on a mongos within a client transaction, the API&apos;s first recursive command will continue the TransactionRouter transaction started by the client so despite that command likely being the first that could target a participant, the router will have opted out of all first overall statement behaviors.&lt;/p&gt;

&lt;p&gt;Since the API will be a common use case going forward, we should enable those behaviors by having the TransactionRouter track the first statement number to actually target a participant, instead of the first overall. This can be accomplished by checking if the participant list is non-empty before incrementing the latestStmtId.&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1992693">SERVER-64104</key>
            <summary>Advance TransactionRouter firstStmtId on continue if no participants were targeted</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="backlog-server-sharding-nyc">[DO NOT USE] Backlog - Sharding NYC</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                    </labels>
                <created>Wed, 2 Mar 2022 00:28:55 +0000</created>
                <updated>Sun, 29 Oct 2023 21:41:47 +0000</updated>
                            <resolved>Fri, 15 Jul 2022 13:58:01 +0000</resolved>
                                                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4680730" author="xgen-internal-githook" created="Thu, 14 Jul 2022 22:20:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Erin Liang&apos;, &apos;email&apos;: &apos;erin.liang@mongodb.com&apos;, &apos;username&apos;: &apos;erl-ang&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64104&quot; title=&quot;Advance TransactionRouter firstStmtId on continue if no participants were targeted&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64104&quot;&gt;&lt;del&gt;SERVER-64104&lt;/del&gt;&lt;/a&gt;: Advance TransactionRouter firstStmtId on continue if no participants were targeted&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bc7d24c035466c435ade89b62f958a6fa4e22333&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bc7d24c035466c435ade89b62f958a6fa4e22333&lt;/a&gt;&lt;/p&gt;</comment>
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