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    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-57769] Operation time from donor may be greater than any oplog timestamp on the recipient after tenant migration</title>
                <link>https://jira.mongodb.org/browse/SERVER-57769</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The recipient in a tenant migration is guaranteed to persist an oplog entry with a timestamp &amp;gt;= the migration&apos;s block timestamp, but cluster time can advance on the donor after the block timestamp has been selected (from writes to other tenant&apos;s data or internal collections). This means the operation time a client receives when reading from the donor may be greater than the block timestamp, so if it performs an afterClusterTime read on the recipient after the migration finishes, that timestamp may not exist in the recipient&apos;s oplog, leading to a stall waiting for write concern until the next write on the recipient - from any tenant, background activity, or the periodic noop writer (the next write is guaranteed to satisfy the afterClusterTime because cluster times from the donor are gossiped to the recipient). A similar problem exists in sharded clusters and is handled by writing a noop oplog entry, but this logic is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/df3417f99795335167ed7251239ab3336b2dfc0c/src/mongo/db/read_concern_mongod.cpp#L142-L145&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;disabled for standalone replica sets&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1787286">SERVER-57769</key>
            <summary>Operation time from donor may be greater than any oplog timestamp on the recipient after tenant migration</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>
                            <label>pm-1791_other_required</label>
                    </labels>
                <created>Wed, 16 Jun 2021 21:48:06 +0000</created>
                <updated>Sun, 29 Oct 2023 21:52:03 +0000</updated>
                            <resolved>Wed, 23 Jun 2021 15:21:17 +0000</resolved>
                                                    <fixVersion>5.0.0-rc4</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4106912" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:12:24 +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="3893980" author="xgen-internal-githook" created="Wed, 23 Jun 2021 14:23:19 +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-57769&quot; title=&quot;Operation time from donor may be greater than any oplog timestamp on the recipient after tenant migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57769&quot;&gt;&lt;del&gt;SERVER-57769&lt;/del&gt;&lt;/a&gt; Allow tenant migration donors to advance cluster time with noops&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 536090be65b70cc0f73ddbbffe5c501c12143a0d)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/efaea9a3abb72c1fe899a9a0926a19813b044f5f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/efaea9a3abb72c1fe899a9a0926a19813b044f5f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3891788" author="xgen-internal-githook" created="Tue, 22 Jun 2021 16:18:39 +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-57769&quot; title=&quot;Operation time from donor may be greater than any oplog timestamp on the recipient after tenant migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57769&quot;&gt;&lt;del&gt;SERVER-57769&lt;/del&gt;&lt;/a&gt; Allow tenant migration donors to advance cluster time with noops&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/536090be65b70cc0f73ddbbffe5c501c12143a0d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/536090be65b70cc0f73ddbbffe5c501c12143a0d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3890191" author="jack.mulrow" created="Mon, 21 Jun 2021 23:52:58 +0000"  >&lt;p&gt;Re-opening because I realized we have the same problem with donors.&lt;/p&gt;</comment>
                            <comment id="3887727" author="xgen-internal-githook" created="Mon, 21 Jun 2021 03:48:55 +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-57769&quot; title=&quot;Operation time from donor may be greater than any oplog timestamp on the recipient after tenant migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57769&quot;&gt;&lt;del&gt;SERVER-57769&lt;/del&gt;&lt;/a&gt; Allow tenant migration recipients to advance cluster time with noops&lt;/p&gt;

&lt;p&gt;(cherry picked from commit fca4506a72e32e2346ddaa7e0a7d9d59f2138d8e)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a82b5eed3bea4e8fb63e6d2b5b29a40cd585a80e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a82b5eed3bea4e8fb63e6d2b5b29a40cd585a80e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3887704" author="xgen-internal-githook" created="Mon, 21 Jun 2021 01:34:32 +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-57769&quot; title=&quot;Operation time from donor may be greater than any oplog timestamp on the recipient after tenant migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57769&quot;&gt;&lt;del&gt;SERVER-57769&lt;/del&gt;&lt;/a&gt; Allow tenant migration recipients to advance cluster time with noops&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fca4506a72e32e2346ddaa7e0a7d9d59f2138d8e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fca4506a72e32e2346ddaa7e0a7d9d59f2138d8e&lt;/a&gt;&lt;/p&gt;</comment>
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