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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-16959] Collection::updateDocument() issues an INVALIDATION_MUTATION after performing an in-place update (MMAP v1)</title>
                <link>https://jira.mongodb.org/browse/SERVER-16959</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In 2.6, the invalidation occurs before performing an in-place document update:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/r2.6.7/src/mongo/db/catalog/collection.cpp#L384-L391&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r2.6.7/src/mongo/db/catalog/collection.cpp#L384-L391&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Due to a refactor to permit a pluggable storage API, mutation invalidations for in-place document updates now occur &lt;em&gt;after&lt;/em&gt; the write. The intention of the validation framework is to notify active queries of writes that are about to happen, not ones that have already occurred.&lt;/p&gt;

&lt;p&gt;Affects only version 2.8 mongod configured with the MMAP v1 storage engine.&lt;/p&gt;</description>
                <environment></environment>
        <key id="179736">SERVER-16959</key>
            <summary>Collection::updateDocument() issues an INVALIDATION_MUTATION after performing an in-place update (MMAP v1)</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="9">Done</resolution>
                                        <assignee username="david.storch@mongodb.com">David Storch</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Tue, 20 Jan 2015 21:36:00 +0000</created>
                <updated>Thu, 5 Feb 2015 20:57:38 +0000</updated>
                            <resolved>Thu, 22 Jan 2015 05:20:13 +0000</resolved>
                                                    <fixVersion>3.0.0-rc6</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="810316" author="xgen-internal-githook" created="Thu, 22 Jan 2015 05:16:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;dstorch&apos;, u&apos;name&apos;: u&apos;David Storch&apos;, u&apos;email&apos;: u&apos;david.storch@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16959&quot; title=&quot;Collection::updateDocument() issues an INVALIDATION_MUTATION after performing an in-place update (MMAP v1)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16959&quot;&gt;&lt;del&gt;SERVER-16959&lt;/del&gt;&lt;/a&gt; send INVALIDATION_MUTATION message prior to an in-place update&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/34f4776efba9205b9969232bce905f681ac8bac3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/34f4776efba9205b9969232bce905f681ac8bac3&lt;/a&gt;&lt;/p&gt;</comment>
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                            <issuelinktype id="10220">
                    <name>Tested</name>
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                                        <issuelink>
            <issuekey id="182817">SERVER-17192</issuekey>
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