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    <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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            <title>[DOCS-15714] [Server]: Add time-series bounded collection scan plans to query multi-planner</title>
                <link>https://jira.mongodb.org/browse/DOCS-15714</link>
                <project id="10380" key="DOCS">Documentation</project>
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&lt;p&gt;    We now consider clustered index scan in multi planning if it can be used., so now it will compete with secondary indexes.&lt;br/&gt;
In previous versions we only considered clustered index scan if there is no secondary indexes or an explicit hint was given: &lt;a href=&quot;https://www.mongodb.com/docs/manual/core/clustered-collections/#limitations&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/docs/manual/core/clustered-collections/#limitations&lt;/a&gt;&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    After&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-54398&quot; title=&quot;Extend query planner to generate bounded collection scan plans for time series collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-54398&quot;&gt;&lt;del&gt;SERVER-54398&lt;/del&gt;&lt;/a&gt;, queries on time-series collections will only consider a bounded collection scan when no indexed solution is available. However there are cases where the bounded collection scan results in better performance than an indexed plan, for example when the indexed solution has wide index bounds and must fetch many documents. We should add the bounded collection scan as a potential plan and compare it with indexed solutions in the query multi-planning process.&lt;/p&gt;
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                <environment></environment>
        <key id="2173129">DOCS-15714</key>
            <summary>[Server]: Add time-series bounded collection scan plans to query multi-planner</summary>
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                                            <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="lauren.tran@mongodb.com">Lauren Tran</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                            <label>query</label>
                            <label>server-docs-bug-bash</label>
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                <created>Wed, 2 Nov 2022 14:49:59 +0000</created>
                <updated>Mon, 13 Nov 2023 17:37:25 +0000</updated>
                            <resolved>Mon, 9 Oct 2023 14:49:46 +0000</resolved>
                                                    <fixVersion>6.2.0-rc0</fixVersion>
                    <fixVersion>6.0.7</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4948278" author="edu.bot" created="Wed, 2 Nov 2022 14:50:05 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58276&quot; title=&quot;Add time-series bounded collection scan plans to query multi-planner&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58276&quot;&gt;&lt;del&gt;SERVER-58276&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
6.2.0-rc0&lt;/p&gt;</comment>
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                            <customfieldvalue>We now consider clustered index scan in multi planning if it can be used., so now it will compete with secondary indexes.&lt;br/&gt;
In previous versions we only considered clustered index scan if there is no secondary indexes or an explicit hint was given: &lt;a href=&quot;https://www.mongodb.com/docs/manual/core/clustered-collections/#limitations&quot;&gt;https://www.mongodb.com/docs/manual/core/clustered-collections/#limitations&lt;/a&gt;</customfieldvalue>

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