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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-81588] [CQF] Fall back to heuristic for sampling estimation of filters</title>
                <link>https://jira.mongodb.org/browse/SERVER-81588</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;ul&gt;
	&lt;li&gt;By default do not perform round-trip optimization for Filters (but retain sargable node implementation).&lt;/li&gt;
	&lt;li&gt;Introduce a flag which controls this behavior. When flag is enabled for debugging continue to optimize filters via round-tripping.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="2455052">SERVER-81588</key>
            <summary>[CQF] Fall back to heuristic for sampling estimation of filters</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="chii.huang@mongodb.com">Chi-I Huang</assignee>
                                    <reporter username="svilen.mihaylov@mongodb.com">Svilen Mihaylov</reporter>
                        <labels>
                    </labels>
                <created>Fri, 29 Sep 2023 20:01:12 +0000</created>
                <updated>Fri, 3 Nov 2023 20:26:01 +0000</updated>
                            <resolved>Fri, 3 Nov 2023 20:26:01 +0000</resolved>
                                                    <fixVersion>7.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5853513" author="xgen-internal-githook" created="Fri, 3 Nov 2023 20:18:35 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Chi-I Huang&apos;, &apos;email&apos;: &apos;chii.huang@mongodb.com&apos;, &apos;username&apos;: &apos;chiihuang&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-81588&quot; title=&quot;[CQF] Fall back to heuristic for sampling estimation of filters&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-81588&quot;&gt;&lt;del&gt;SERVER-81588&lt;/del&gt;&lt;/a&gt; Fall back to heuristic for sampling estimation of filters&lt;/p&gt;

&lt;p&gt;Always falls back on FilterNode, given that any FilterNode with fields indexed is supposed to be converted to a SargableNode during the substitution phase. Adds a query knob to control this behavior.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f18dc3b6b2a94407d4074b0c0c1d74dd07d7b80d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f18dc3b6b2a94407d4074b0c0c1d74dd07d7b80d&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2434119">SERVER-80732</issuekey>
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