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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-26672] Index bounds builder should generate exact bounds for timestamps</title>
                <link>https://jira.mongodb.org/browse/SERVER-26672</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The index bounds builder can generate exact bounds for timestamps, but it does not currently, because timestamps are not considered a simple BSON type: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.4.0-rc0/src/mongo/db/query/index_bounds_builder.cpp#L60&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r3.4.0-rc0/src/mongo/db/query/index_bounds_builder.cpp#L60&lt;/a&gt;. This can cause us to do an unnecessary FETCH stage.&lt;/p&gt;

&lt;p&gt;As part of this work, we should consider removing &lt;tt&gt;isSimpleType()&lt;/tt&gt; from &lt;tt&gt;BSONElement&lt;/tt&gt;, since it is only used within the query system.&lt;/p&gt;</description>
                <environment></environment>
        <key id="324525">SERVER-26672</key>
            <summary>Index bounds builder should generate exact bounds for timestamps</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="9">Done</resolution>
                                        <assignee username="marko.vojvodic@mongodb.com">Marko Vojvodic</assignee>
                                    <reporter username="tess.avitabile@mongodb.com">Tess Avitabile</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Tue, 18 Oct 2016 14:52:07 +0000</created>
                <updated>Sat, 19 Nov 2016 00:05:38 +0000</updated>
                            <resolved>Tue, 8 Nov 2016 16:38:16 +0000</resolved>
                                                    <fixVersion>3.4.0-rc3</fixVersion>
                                    <component>Querying</component>
                                        <votes>1</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="1428207" author="xgen-internal-githook" created="Mon, 7 Nov 2016 17:59:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;m-vojvodic&apos;, u&apos;name&apos;: u&apos;Marko Vojvodic&apos;, u&apos;email&apos;: u&apos;marko.vojvodic@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-26672&quot; title=&quot;Index bounds builder should generate exact bounds for timestamps&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-26672&quot;&gt;&lt;del&gt;SERVER-26672&lt;/del&gt;&lt;/a&gt; Generate exact bounds for timestamps in index bounds builder&lt;/p&gt;

&lt;p&gt;This commit also replaces BSONElement::isSimpleType with&lt;br/&gt;
Indexability::isExactBoundsGenerating, since the isSimpleType construct&lt;br/&gt;
was only used within the query system.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8f769688f5b8ca6fa11e07d02600dbbb50178cff&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8f769688f5b8ca6fa11e07d02600dbbb50178cff&lt;/a&gt;&lt;/p&gt;</comment>
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