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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>[DOCS-2455] Clarify the &quot;Isolate Sequence of Operations&quot; doc</title>
                <link>https://jira.mongodb.org/browse/DOCS-2455</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The &quot;Isolate Sequence of Operations&quot; document is somewhat confusing. Specifically:&lt;/p&gt;

&lt;p&gt;&quot;Use the entire document as the query in the update() operation, to generalize the operation and guarantee that the original document was not modified, rather than ensuring that as single field was not changed.&quot;&lt;/p&gt;

&lt;p&gt;This sentence is incorrect in general, specifying the entire document as the selector in update() will continue to match the document after new fields are added.&lt;/p&gt;

&lt;p&gt;Solutions: (1) drop this recommendation, (2) add caveats to it, e.g., that using the entire document works if and only if all updaters only ever do in-place updates, but never add new fields and never cause field reordering, (3) much more complicated-ly, for each updater to specify $not $exists for any fields that other updaters might be adding (though this approach, while logically valid, would be insanely bad engineering).&lt;/p&gt;

&lt;p&gt;Probably dropping the bullet would be best.&lt;/p&gt;

&lt;p&gt;More generally this document is confusing: the preamble talks about multi-document isolation, but this pattern is about optimistic concurrency, not isolation.&lt;/p&gt;</description>
                <environment></environment>
        <key id="103672">DOCS-2455</key>
            <summary>Clarify the &quot;Isolate Sequence of Operations&quot; doc</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="9">Done</resolution>
                                        <assignee username="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="richard.kreuter">Richard Kreuter</reporter>
                        <labels>
                    </labels>
                <created>Tue, 24 Dec 2013 15:11:00 +0000</created>
                <updated>Mon, 16 Mar 2015 23:57:14 +0000</updated>
                            <resolved>Fri, 14 Nov 2014 18:35:09 +0000</resolved>
                                                    <fixVersion>v1.3.11</fixVersion>
                    <fixVersion>v1.3.14</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="764632" author="xgen-internal-githook" created="Fri, 14 Nov 2014 18:33:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kay-kim&apos;, u&apos;name&apos;: u&apos;kay&apos;, u&apos;email&apos;: u&apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-2455&quot; title=&quot;Clarify the &amp;quot;Isolate Sequence of Operations&amp;quot; doc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2455&quot;&gt;&lt;del&gt;DOCS-2455&lt;/del&gt;&lt;/a&gt;: some reorg of isolate sequence&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/45c2c494d6fdeb8b4f281167f8bf8b765f9b9c51&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/45c2c494d6fdeb8b4f281167f8bf8b765f9b9c51&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="764631" author="xgen-internal-githook" created="Fri, 14 Nov 2014 18:33:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;i80and&apos;, u&apos;name&apos;: u&apos;Andrew Aldridge&apos;, u&apos;email&apos;: u&apos;i80and@foxquill.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-2455&quot; title=&quot;Clarify the &amp;quot;Isolate Sequence of Operations&amp;quot; doc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2455&quot;&gt;&lt;del&gt;DOCS-2455&lt;/del&gt;&lt;/a&gt;: Split up the Isolate Sequence of Operations tutorial&lt;/p&gt;

&lt;p&gt;Signed-off-by: kay &amp;lt;kay.kim@10gen.com&amp;gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/1bed44a63c6d5fd3a3b65fcc298fcdde7de11034&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/1bed44a63c6d5fd3a3b65fcc298fcdde7de11034&lt;/a&gt;&lt;/p&gt;</comment>
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