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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-58155] Equality semantics changed for double/decimal in SBE</title>
                <link>https://jira.mongodb.org/browse/SERVER-58155</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In 4.4 the values: 5.01 (a double) and NumberDecimal(&quot;5.01&quot;) are not equal to each other according to $lookup with localField/foreignField. However when I tested this on 5.0rc2 they were counted as equal.&#160;This behavior did not occur on rc5. &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=ksuarz%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;ksuarz@gmail.com&quot;&gt;ksuarz@gmail.com&lt;/a&gt;&#160;suggested that this is likely due to the new SBE engine.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1802585">SERVER-58155</key>
            <summary>Equality semantics changed for double/decimal in SBE</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="martin.neupauer@mongodb.com">Martin Neupauer</assignee>
                                    <reporter username="brian.deleonardis@mongodb.com">Brian DeLeonardis</reporter>
                        <labels>
                            <label>sbe-diff</label>
                    </labels>
                <created>Tue, 29 Jun 2021 18:11:24 +0000</created>
                <updated>Sun, 29 Oct 2023 21:51:30 +0000</updated>
                            <resolved>Fri, 10 Sep 2021 15:26:48 +0000</resolved>
                                    <version>5.0.0-rc2</version>
                                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="4106929" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:12:50 +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="4050018" author="xgen-internal-githook" created="Fri, 10 Sep 2021 15:15:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Martin Neupauer&apos;, &apos;email&apos;: &apos;martin.neupauer@mongodb.com&apos;, &apos;username&apos;: &apos;MartinNeupauer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58155&quot; title=&quot;Equality semantics changed for double/decimal in SBE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58155&quot;&gt;&lt;del&gt;SERVER-58155&lt;/del&gt;&lt;/a&gt; Emulate classic engine double/decimal equality comparisons&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/48aff5ab982993a413baedd21901c6c74aacdcc5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/48aff5ab982993a413baedd21901c6c74aacdcc5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3943767" author="JIRAUSER1257467" created="Thu, 15 Jul 2021 15:22:05 +0000"  >&lt;p&gt;Passing this one to you to confirm if this should be on the SBE Rollout project&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is related to">
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            <issuekey id="1860185">SERVER-59584</issuekey>
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                            <customfieldvalue>&lt;p&gt;Create a collection: lookup_numeric_mixed:&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;60db590cbb5709ba513cb8c9&quot;), &quot;a&quot; : 5.01 }
{ &quot;_id&quot; : ObjectId(&quot;60db5914bb5709ba513cb8ca&quot;), &quot;a&quot; : NumberDecimal(&quot;5.01&quot;) }
{ &quot;_id&quot; : ObjectId(&quot;60db591cbb5709ba513cb8cb&quot;), &quot;a&quot; : NumberDecimal(&quot;5.0100&quot;) }
&lt;p&gt;Run the following pipeline on it:&lt;br/&gt;
[&lt;br/&gt;
    {&lt;br/&gt;
        &quot;$lookup&quot;: &lt;/p&gt;
{
            &quot;from&quot;: &quot;lookup_numeric_mixed&quot;,
            &quot;localField&quot;: &quot;a&quot;,
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&lt;p&gt;    },&lt;br/&gt;
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        &quot;$project&quot;: &lt;/p&gt;
{
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        }
&lt;p&gt;    }&lt;br/&gt;
]&lt;br/&gt;
Observe that the results on 4.4 and 5.0rc2 are different.&lt;/p&gt;</customfieldvalue>

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