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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-62042] Add/refactor query knobs to allow forcing CQF code path</title>
                <link>https://jira.mongodb.org/browse/SERVER-62042</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The POC had a flag for enabling the new optimizer, but it would also be interesting to be able to cover the following scenarios:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;&lt;b&gt;Force&lt;/b&gt; the new optimizer even if unsupported (aka ignore the fallback)&lt;/li&gt;
	&lt;li&gt;Force SBE + DocumentSource (5.2)&lt;/li&gt;
	&lt;li&gt;Force entirely classic&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Ideally we don&apos;t have individual, conflicting knobs for each of these cases but instead a string enum.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1948790">SERVER-62042</key>
            <summary>Add/refactor query knobs to allow forcing CQF code path</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="nicholas.zolnierz@mongodb.com">Nicholas Zolnierz</assignee>
                                    <reporter username="nicholas.zolnierz@mongodb.com">Nicholas Zolnierz</reporter>
                        <labels>
                    </labels>
                <created>Tue, 14 Dec 2021 12:58:45 +0000</created>
                <updated>Sun, 29 Oct 2023 21:45:04 +0000</updated>
                            <resolved>Mon, 8 Aug 2022 11:46:53 +0000</resolved>
                                                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="4735290" author="nicholas.zolnierz" created="Mon, 8 Aug 2022 16:58:50 +0000"  >&lt;p&gt;The bot missed a commit for this ticket that fixed an integration test: &lt;a href=&quot;https://github.com/mongodb/mongo/commit/e16c09dbe5ad520fe54f8c7e0e1b5aca13c08f70&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e16c09dbe5ad520fe54f8c7e0e1b5aca13c08f70&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4730871" author="xgen-internal-githook" created="Fri, 5 Aug 2022 13:06:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Nick Zolnierz&apos;, &apos;email&apos;: &apos;nicholas.zolnierz@mongodb.com&apos;, &apos;username&apos;: &apos;nzolnierzmdb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62042&quot; title=&quot;Add/refactor query knobs to allow forcing CQF code path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62042&quot;&gt;&lt;del&gt;SERVER-62042&lt;/del&gt;&lt;/a&gt; Update references to internalQueryForceClassicEngine to use the new knob (#1075)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/dsi/commit/b5647e9f32c7714196c70e394040ab909030e02e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/dsi/commit/b5647e9f32c7714196c70e394040ab909030e02e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4730775" author="xgen-internal-githook" created="Fri, 5 Aug 2022 12:25:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Nick Zolnierz&apos;, &apos;email&apos;: &apos;nicholas.zolnierz@mongodb.com&apos;, &apos;username&apos;: &apos;nzolnierzmdb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62042&quot; title=&quot;Add/refactor query knobs to allow forcing CQF code path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62042&quot;&gt;&lt;del&gt;SERVER-62042&lt;/del&gt;&lt;/a&gt; Update usages of internalQueryForceClassicEngine to use the new knob (#716)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/genny/commit/0197c781fe38048795e574bd2ecbf8a95356d114&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/genny/commit/0197c781fe38048795e574bd2ecbf8a95356d114&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4728966" author="xgen-internal-githook" created="Thu, 4 Aug 2022 15:39:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Nicholas Zolnierz&apos;, &apos;email&apos;: &apos;nicholas.zolnierz@mongodb.com&apos;, &apos;username&apos;: &apos;nzolnierzmdb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62042&quot; title=&quot;Add/refactor query knobs to allow forcing CQF code path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62042&quot;&gt;&lt;del&gt;SERVER-62042&lt;/del&gt;&lt;/a&gt; Consolidate query optimization and execution control into a single knob&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/cdd2775640387ff7ec9e20dd7d24295216ace664&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/cdd2775640387ff7ec9e20dd7d24295216ace664&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4727836" author="xgen-internal-githook" created="Thu, 4 Aug 2022 06:10:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;auto-revert-processor&apos;, &apos;email&apos;: &apos;dev-prod-dag@mongodb.com&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62042&quot; title=&quot;Add/refactor query knobs to allow forcing CQF code path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62042&quot;&gt;&lt;del&gt;SERVER-62042&lt;/del&gt;&lt;/a&gt; Consolidate query optimization and execution control into a single knob&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit c9bbd1cfae470f2b3229e69957f512d2a2db6663.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/757f6f229366ff938c7768322efc6effe2218389&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/757f6f229366ff938c7768322efc6effe2218389&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4251733" author="kyle.suarez" created="Wed, 15 Dec 2021 20:03:00 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=nicholas.zolnierz&quot; class=&quot;user-hover&quot; rel=&quot;nicholas.zolnierz&quot;&gt;nicholas.zolnierz&lt;/a&gt; yeah that makes sense &amp;#8211; I do think that an enum probably makes the most sense and is the cleanest to control, though we&apos;d have to go through and do a bunch of cleanup surrounding the old &quot;force classic engine&quot; flag.&lt;/p&gt;</comment>
                            <comment id="4250181" author="nicholas.zolnierz" created="Wed, 15 Dec 2021 15:33:30 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kyle.suarez&quot; class=&quot;user-hover&quot; rel=&quot;kyle.suarez&quot;&gt;kyle.suarez&lt;/a&gt; thats a possibility, yeah. I suppose we either keep the existing one and add a lower priority enum knob that allows a user to control the exact CQF path, or we roll the existing knob into the enum one. Does that make sense?&lt;/p&gt;</comment>
                            <comment id="4250132" author="kyle.suarez" created="Wed, 15 Dec 2021 15:23:30 +0000"  >&lt;p&gt;Would we replace the existing &lt;tt&gt;internalQueryForceClassicEngine&lt;/tt&gt; in favor of the new thing?&lt;/p&gt;</comment>
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