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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-78176] Tenant oplog applier  should handle back-to-back migration involving no-op session writes.</title>
                <link>https://jira.mongodb.org/browse/SERVER-78176</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Tenant oplog applier fails to handle below edge case involving back-to-back tenant migration (rs0 -&amp;gt; rs1 -&amp;gt; rs0).&lt;/p&gt;

&lt;p&gt;&#160;1) rs0: Retryable insert at txnNum: 55 succeeds.&lt;br/&gt;
&#160;2) rs0: No-op session write (E.g. no-op retryable update) at txnNum: 56 succeeds, causing no &#160;writes to &apos;config.transactions&apos; table but updates in-memory transaction participant.&lt;br/&gt;
&#160;3) Start migration from rs0 -&amp;gt; rs1, copying the oplog chain for txnNum:55 from rs0 to rs1.&lt;br/&gt;
&#160;4) rs0 -&amp;gt; rs1 migration succeeds.&lt;br/&gt;
&#160;5) Starting a migration again from rs1 -&amp;gt; rs0 &#160;should succeed. But, currently it fails with ErrorCodes.TransactionTooOld because tenant oplog applier &lt;a href=&quot;https://github.com/10gen/mongo/blob/a9be8ca874700611d017d28ccc486de2d87823ff/src/mongo/db/repl/tenant_oplog_applier.cpp#L525-L545&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;doesn&apos;t consider no-op session writes&lt;/a&gt; (E.g, no-op retryable update, read transactions or abort replica set transactions).&lt;/p&gt;</description>
                <environment></environment>
        <key id="2370610">SERVER-78176</key>
            <summary>Tenant oplog applier  should handle back-to-back migration involving no-op session writes.</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="suganthi.mani@mongodb.com">Suganthi Mani</assignee>
                                    <reporter username="suganthi.mani@mongodb.com">Suganthi Mani</reporter>
                        <labels>
                    </labels>
                <created>Fri, 16 Jun 2023 15:16:34 +0000</created>
                <updated>Sun, 29 Oct 2023 21:19:55 +0000</updated>
                            <resolved>Fri, 23 Jun 2023 04:23:32 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5520092" author="xgen-internal-githook" created="Fri, 23 Jun 2023 01:49:08 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Suganthi Mani&apos;, &apos;email&apos;: &apos;suganthi.mani@mongodb.com&apos;, &apos;username&apos;: &apos;smani87&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78176&quot; title=&quot;Tenant oplog applier  should handle back-to-back migration involving no-op session writes.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78176&quot;&gt;&lt;del&gt;SERVER-78176&lt;/del&gt;&lt;/a&gt; Tenant oplog applier handles back-to-back migration involving no-op session writes.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4d4ef75454720d80b9afe43b453b613baf9d6a03&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4d4ef75454720d80b9afe43b453b613baf9d6a03&lt;/a&gt;&lt;/p&gt;</comment>
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