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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-63491] Handle txnRetryCounter entirely within TransactionRouter</title>
                <link>https://jira.mongodb.org/browse/SERVER-63491</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The txnRetryCounter field added for internal transactions is only necessary for retrying transparently within a client transaction (tracked by&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60369&quot; title=&quot;[txnRetryCounter] Use txnRetryCounter on router to retry on some transient errors in a client transaction&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60369&quot;&gt;SERVER-60369&lt;/a&gt;), so there&apos;s no need for callers to pass one to TransactionRouter::beginOrContinueTxn() on mongos and retry counter handling can take place entirely within that class.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1980389">SERVER-63491</key>
            <summary>Handle txnRetryCounter entirely within TransactionRouter</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="sanika.phanse@mongodb.com">Sanika Phanse</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Feb 2022 16:59:07 +0000</created>
                <updated>Sun, 29 Oct 2023 21:42:45 +0000</updated>
                            <resolved>Mon, 28 Feb 2022 21:55:10 +0000</resolved>
                                                    <fixVersion>5.2.2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4375761" author="xgen-internal-githook" created="Thu, 24 Feb 2022 22:11:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sanika Phanse&apos;, &apos;email&apos;: &apos;sanika.phanse@mongodb.com&apos;, &apos;username&apos;: &apos;sphanse99&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-63491&quot; title=&quot;Handle txnRetryCounter entirely within TransactionRouter&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-63491&quot;&gt;&lt;del&gt;SERVER-63491&lt;/del&gt;&lt;/a&gt; Remove TxnNumberAndRetryCounter as a parameter for txnRouter.beginOrContinue()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d85d3a3df471fbbf29459e37937161b0b55c3230&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d85d3a3df471fbbf29459e37937161b0b55c3230&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4345541" author="jack.mulrow" created="Wed, 9 Feb 2022 17:11:47 +0000"  >&lt;p&gt;Proposed implementation:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Change TransactionRouter::beginOrContinueTxn() to take a TxnNumber &lt;a href=&quot;https://github.com/mongodb/mongo/blob/116a38b637faf897e1a6014abdaadff137cdb496/src/mongo/s/transaction_router.cpp#L1051&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;&#160;instead of a TxnNumberAndRetryCounter and instead construct a TxnNumberAndRetryCounter within the method with a retry counter of 0.&lt;/li&gt;
	&lt;li&gt;Remove the existing txnRetryCounter validations in beginOrContinueTxn(), e.g. &lt;a href=&quot;https://github.com/mongodb/mongo/blob/116a38b637faf897e1a6014abdaadff137cdb496/src/mongo/s/transaction_router.cpp#L1053&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this invariant&lt;/a&gt;, this &lt;a href=&quot;https://github.com/mongodb/mongo/blob/116a38b637faf897e1a6014abdaadff137cdb496/src/mongo/s/transaction_router.cpp#L942-L951&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;if block&lt;/a&gt;, and this &lt;a href=&quot;https://github.com/mongodb/mongo/blob/116a38b637faf897e1a6014abdaadff137cdb496/src/mongo/s/transaction_router.cpp#L952-L953&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;else if condition&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Update tests that send a txnRetryCounter directly to a mongos (as opposed to against a mongod, which will still be supported) or TransactionRouter::beginOrContinueTxn(), to not do so.&lt;/li&gt;
&lt;/ol&gt;
</comment>
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