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    <title>MongoDB Jira</title>
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    <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-64994] Extend the planner to allow soft hints about index traversal direction for predicate satisfaction</title>
                <link>https://jira.mongodb.org/browse/SERVER-64994</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Our planning strategy for BUS involves choosing to perform the rewrite only if the planner selects a compatible index. But because the query planner can only choose the index based off match predicates (we don&apos;t push down any sort information past the unpack buckets stage). But, the planner always chooses a forward (collection, index)  scan to satisfy match predicates. This &quot;soft&quot; hint will tell the planner if you&apos;re trying to match a predicate on say (meta, time) it would be nice if the scan happened in this particular order as opposed to the default order. This is intended as an internal-only feature of the planner.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2010528">SERVER-64994</key>
            <summary>Extend the planner to allow soft hints about index traversal direction for predicate satisfaction</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="13201">Fixed</resolution>
                                        <assignee username="matt.boros@mongodb.com">Matt Boros</assignee>
                                    <reporter username="samuel.mercier@mongodb.com">Sam Mercier</reporter>
                        <labels>
                    </labels>
                <created>Mon, 28 Mar 2022 17:18:47 +0000</created>
                <updated>Sun, 29 Oct 2023 21:40:27 +0000</updated>
                            <resolved>Mon, 13 Jun 2022 14:28:34 +0000</resolved>
                                                    <fixVersion>6.0.0-rc10</fixVersion>
                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4613141" author="xgen-internal-githook" created="Mon, 13 Jun 2022 23:50:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Matt Boros&apos;, &apos;email&apos;: &apos;matt.boros@mongodb.com&apos;, &apos;username&apos;: &apos;mattBoros&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64994&quot; title=&quot;Extend the planner to allow soft hints about index traversal direction for predicate satisfaction&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64994&quot;&gt;&lt;del&gt;SERVER-64994&lt;/del&gt;&lt;/a&gt; Extend the planner to allow soft hints about index traversal direction&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 00d2a56763b2b0da941a41684d20e7080da5058e)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0c75db7b1167d4544254724735535505bb6b4a70&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0c75db7b1167d4544254724735535505bb6b4a70&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4608080" author="xgen-internal-githook" created="Fri, 10 Jun 2022 20:23:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Matt Boros&apos;, &apos;email&apos;: &apos;matt.boros@mongodb.com&apos;, &apos;username&apos;: &apos;mattBoros&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64994&quot; title=&quot;Extend the planner to allow soft hints about index traversal direction for predicate satisfaction&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64994&quot;&gt;&lt;del&gt;SERVER-64994&lt;/del&gt;&lt;/a&gt; Extend the planner to allow soft hints about index traversal direction&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/00d2a56763b2b0da941a41684d20e7080da5058e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/00d2a56763b2b0da941a41684d20e7080da5058e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4450479" author="samuel.mercier" created="Fri, 1 Apr 2022 14:50:01 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.storch&quot; class=&quot;user-hover&quot; rel=&quot;david.storch&quot;&gt;david.storch&lt;/a&gt; i wrote a description. let me know if there&apos;s anything i can do to further clarify.&lt;/p&gt;</comment>
                            <comment id="4447951" author="david.storch" created="Thu, 31 Mar 2022 15:56:44 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=samuel.mercier&quot; class=&quot;user-hover&quot; rel=&quot;samuel.mercier&quot;&gt;samuel.mercier&lt;/a&gt;&#160;can you provide a description for this ticket? I&apos;m curious to know more about this.&lt;/p&gt;</comment>
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