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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>
    </build-info>


<item>
            <title>[SERVER-47812] Secondaries persist wildcard multikeypaths out of order</title>
                <link>https://jira.mongodb.org/browse/SERVER-47812</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Because secondaries apply operations out of order, the following scenario can play out in the absence of special logic:&lt;/p&gt;
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&lt;p/&gt;

&lt;p&gt;See &lt;a href=&quot;https://github.com/mongodb/mongo/blob/06755cd5a43d08b5e1e9163e060177d728ae6696/src/mongo/db/catalog/index_catalog_entry_impl.cpp#L215-L242&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this comment&lt;/a&gt; for persisting classical index multikey paths.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1330585">SERVER-47812</key>
            <summary>Secondaries persist wildcard multikeypaths out of order</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="bernard.gorman@mongodb.com">Bernard Gorman</assignee>
                                    <reporter username="daniel.gottlieb@mongodb.com">Daniel Gottlieb</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Mon, 27 Apr 2020 23:47:33 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:58 +0000</updated>
                            <resolved>Sat, 12 Sep 2020 23:28:26 +0000</resolved>
                                    <version>4.2.0</version>
                    <version>4.4.0-rc0</version>
                                    <fixVersion>4.8.0</fixVersion>
                    <fixVersion>4.4.2</fixVersion>
                    <fixVersion>4.2.12</fixVersion>
                                    <component>Replication</component>
                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="3499023" author="xgen-internal-githook" created="Fri, 20 Nov 2020 01:55:02 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Bernard Gorman&apos;, &apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;username&apos;: &apos;gormanb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47812&quot; title=&quot;Secondaries persist wildcard multikeypaths out of order&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47812&quot;&gt;&lt;del&gt;SERVER-47812&lt;/del&gt;&lt;/a&gt; Secondaries persist wildcard multikeypaths out of order&lt;/p&gt;

&lt;p&gt;(cherry picked from commit bd320bc2d10cff75756a2c95986cc81ec8a5e7c7)&lt;br/&gt;
(cherry picked from commit 48089c01bcccc193b1d8dd3c50ae5cb3e072ebed)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9870937b91b88348e619580f1050965b1006e33d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9870937b91b88348e619580f1050965b1006e33d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3451204" author="xgen-internal-githook" created="Mon, 19 Oct 2020 03:05:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Bernard Gorman&apos;, &apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;username&apos;: &apos;gormanb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47812&quot; title=&quot;Secondaries persist wildcard multikeypaths out of order&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47812&quot;&gt;&lt;del&gt;SERVER-47812&lt;/del&gt;&lt;/a&gt; Secondaries persist wildcard multikeypaths out of order&lt;/p&gt;

&lt;p&gt;(cherry picked from commit bd320bc2d10cff75756a2c95986cc81ec8a5e7c7)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/48089c01bcccc193b1d8dd3c50ae5cb3e072ebed&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/48089c01bcccc193b1d8dd3c50ae5cb3e072ebed&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3391046" author="xgen-internal-githook" created="Sat, 12 Sep 2020 21:59:46 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Bernard Gorman&apos;, &apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;username&apos;: &apos;gormanb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47812&quot; title=&quot;Secondaries persist wildcard multikeypaths out of order&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47812&quot;&gt;&lt;del&gt;SERVER-47812&lt;/del&gt;&lt;/a&gt; Secondaries persist wildcard multikeypaths out of order&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bd320bc2d10cff75756a2c95986cc81ec8a5e7c7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bd320bc2d10cff75756a2c95986cc81ec8a5e7c7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3361590" author="daniel.gottlieb@10gen.com" created="Thu, 27 Aug 2020 03:56:35 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=judah.schvimer&quot; class=&quot;user-hover&quot; rel=&quot;judah.schvimer&quot;&gt;judah.schvimer&lt;/a&gt;&#160;reminded me that we had tests which demonstrate bugs when multikey writes are incorrectly timestamped due to replication potentially processing entries out of order. &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/275749/275749_server47812_repro.diff&quot; title=&quot;server47812_repro.diff attached to SERVER-47812&quot;&gt;Attached is a patch&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;  that fails most of the time (there&apos;s still some non-determinism) for wildcard indexes.  &lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=bernard.gorman&quot; class=&quot;user-hover&quot; rel=&quot;bernard.gorman&quot;&gt;bernard.gorman&lt;/a&gt;, as per our conversations I wrote another test for multikey on index types that don&apos;t track paths (e.g: &quot;2d&quot;), but was able to observe the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/f34cd12cd4b933c672b5fedfcaa4e01391461853/src/mongo/db/catalog/index_catalog_entry_impl.cpp#L235&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;MultikeyPathTracker&lt;/tt&gt; being modified&lt;/a&gt; and that side-effect correctly propagating into the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/f34cd12cd4b933c672b5fedfcaa4e01391461853/src/mongo/db/repl/oplog_applier_impl.cpp#L591-L593&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;special multikey write secondaries perform&lt;/a&gt;.&lt;/p&gt;</comment>
                    </comments>
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                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="1711537">SERVER-56877</issuekey>
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