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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-55883] Allow retrying commitTransaction across back-to-back migrations</title>
                <link>https://jira.mongodb.org/browse/SERVER-55883</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, tenant migrations supports retrying commitTransaction across a single migration. With the current implementation, retrying commitTransaction may not work if back-to-back tenant migrations occur.&lt;/p&gt;

&lt;p&gt;This is because when we create the transaction entry on the recipient of the first tenant migration, we &lt;a href=&quot;https://github.com/mongodb/mongo/blob/78f1e0d7996b26b5cbb69aff3ae9ddbebaaf824d/src/mongo/db/repl/tenant_migration_recipient_service.cpp#L965&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;set the &lt;tt&gt;lastWriteOpTime&lt;/tt&gt; field to be an empty OpTime&lt;/a&gt;. In the aggregation pipeline for fetching these committed transactions, we &lt;a href=&quot;https://github.com/mongodb/mongo/blob/78f1e0d7996b26b5cbb69aff3ae9ddbebaaf824d/src/mongo/db/repl/tenant_migration_util.cpp#L177&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;use the &lt;tt&gt;lastWriteOpTime&lt;/tt&gt; to find the corresponding oplog entry&lt;/a&gt;. Since &lt;tt&gt;lastWriteOpTime&lt;/tt&gt; is empty, on the second tenant migration, the pipeline will not return the transaction entry. As a result, users will not be able to retry commitTransaction after the second tenant migration.&lt;/p&gt;

&lt;p&gt;This is probably not a major issue, since retrying a commitTransaction after a back-to-back migration is a rare situation.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1673599">SERVER-55883</key>
            <summary>Allow retrying commitTransaction across back-to-back migrations</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="13201">Fixed</resolution>
                                        <assignee username="lingzhi.deng@mongodb.com">Lingzhi Deng</assignee>
                                    <reporter username="xuerui.fa@mongodb.com">Xuerui Fa</reporter>
                        <labels>
                            <label>pm-1791_non-cloud-blocking</label>
                            <label>pm-1791_other_required</label>
                            <label>post-rc0</label>
                    </labels>
                <created>Wed, 7 Apr 2021 19:14:43 +0000</created>
                <updated>Sun, 29 Oct 2023 21:55:12 +0000</updated>
                            <resolved>Wed, 19 May 2021 19:16:42 +0000</resolved>
                                    <version>5.1 Required</version>
                                    <fixVersion>5.0.0-rc0</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4108181" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:59:20 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3793038" author="xgen-internal-githook" created="Wed, 19 May 2021 19:48:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Lingzhi Deng&apos;, &apos;email&apos;: &apos;lingzhi.deng@mongodb.com&apos;, &apos;username&apos;: &apos;ldennis&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55883&quot; title=&quot;Allow retrying commitTransaction across back-to-back migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55883&quot;&gt;&lt;del&gt;SERVER-55883&lt;/del&gt;&lt;/a&gt;: Allow retrying commitTransaction across back-to-back migrations&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 576e2a257cb27ca89c4466a9bdef92e2b2d05ded)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/47f09ef73c7f9782312a2e72a2d7b95879648d0f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/47f09ef73c7f9782312a2e72a2d7b95879648d0f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3792940" author="xgen-internal-githook" created="Wed, 19 May 2021 19:12:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Lingzhi Deng&apos;, &apos;email&apos;: &apos;lingzhi.deng@mongodb.com&apos;, &apos;username&apos;: &apos;ldennis&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55883&quot; title=&quot;Allow retrying commitTransaction across back-to-back migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55883&quot;&gt;&lt;del&gt;SERVER-55883&lt;/del&gt;&lt;/a&gt;: Allow retrying commitTransaction across back-to-back migrations&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/576e2a257cb27ca89c4466a9bdef92e2b2d05ded&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/576e2a257cb27ca89c4466a9bdef92e2b2d05ded&lt;/a&gt;&lt;/p&gt;</comment>
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