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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-77457] Enable $trunc SBE implementation by default</title>
                <link>https://jira.mongodb.org/browse/SERVER-77457</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;At the moment, $trunc is implemented for SBE but is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/3b6ae5534305e22aa9b75f90f5808afbaa6e88b2/src/mongo/db/pipeline/expression.h#L3652-L3653&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;guarded behind &lt;tt&gt;featureFlagSbeFull&lt;/tt&gt;&lt;/a&gt;. Assuming the performance results look good, then we should enable $trunc in SBE by default in the next release. This should be as simple as removing the line of code referenced above that marks the expression with &lt;tt&gt;SbeCompatibility::flagGuarded&lt;/tt&gt; during parsing.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2349828">SERVER-77457</key>
            <summary>Enable $trunc SBE implementation by default</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="amr.elhelw@mongodb.com">Amr Elhelw</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Wed, 24 May 2023 21:04:57 +0000</created>
                <updated>Sun, 29 Oct 2023 21:20:58 +0000</updated>
                            <resolved>Wed, 14 Jun 2023 15:49:52 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5497837" author="xgen-internal-githook" created="Wed, 14 Jun 2023 09:45:58 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Amr Elhelw&apos;, &apos;email&apos;: &apos;amr.elhelw@mongodb.com&apos;, &apos;username&apos;: &apos;aelhelw&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77457&quot; title=&quot;Enable $trunc SBE implementation by default&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77457&quot;&gt;&lt;del&gt;SERVER-77457&lt;/del&gt;&lt;/a&gt; Enable $trunc SBE implementation by default&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ec4e591e70b21687a906b3404800b61826d2aefd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ec4e591e70b21687a906b3404800b61826d2aefd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5496706" author="JIRAUSER1272798" created="Tue, 13 Jun 2023 20:24:37 +0000"  >&lt;p&gt;Just added some performance results obtained from go/perf-trends for ExpressionTrunc on both SBE and classic engine. Seems safe to enable the SBE implementation by default&lt;/p&gt;</comment>
                            <comment id="5481566" author="JIRAUSER1272798" created="Wed, 7 Jun 2023 15:30:32 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.storch%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;david.storch@mongodb.com&quot;&gt;david.storch@mongodb.com&lt;/a&gt; I&apos;m not sure if it will happen in the current sprint or the next one. I only submitted some benchmark changes yesterday, so would like to wait and see the performance results. I&apos;ll probably take care of it myself.&lt;/p&gt;</comment>
                            <comment id="5481454" author="david.storch" created="Wed, 7 Jun 2023 15:05:23 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=amr.elhelw%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;amr.elhelw@mongodb.com&quot;&gt;amr.elhelw@mongodb.com&lt;/a&gt; did you mean to schedule this into the current sprint, or are you going to find a different assignee?&lt;/p&gt;</comment>
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                            <attachment id="455990" name="ExpressionTrunc-classic.png" size="69876" author="amr.elhelw@mongodb.com" created="Tue, 13 Jun 2023 20:23:18 +0000"/>
                            <attachment id="455991" name="ExpressionTrunc-sbe.png" size="76512" author="amr.elhelw@mongodb.com" created="Tue, 13 Jun 2023 20:23:26 +0000"/>
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