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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-8031] Allow dropping the _id index when you have a hashed _id index</title>
                <link>https://jira.mongodb.org/browse/SERVER-8031</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If hashed indexes can function as unique indexes, then it&apos;s not really necessary to maintain both an index on {_id : 1} and one on {_id : &quot;hashed&quot;}.  There&apos;s an obvious cost to maintaining both indexes (unless you need the original one for range queries).  Thus if/when &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5878&quot; title=&quot;Allow hashed indexes to be unique&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-5878&quot;&gt;SERVER-5878&lt;/a&gt; is implemented, the user should be allowed to drop the default {_id : 1} index. &lt;/p&gt;</description>
                <environment></environment>
        <key id="60356">SERVER-8031</key>
            <summary>Allow dropping the _id index when you have a hashed _id index</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="matulef">Kevin Matulef</reporter>
                        <labels>
                            <label>gm-ack</label>
                    </labels>
                <created>Wed, 26 Dec 2012 09:31:10 +0000</created>
                <updated>Tue, 6 Dec 2022 05:26:21 +0000</updated>
                            <resolved>Tue, 22 Jan 2019 23:58:28 +0000</resolved>
                                                                    <component>Index Maintenance</component>
                    <component>Sharding</component>
                                        <votes>3</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="2123649" author="asya" created="Tue, 22 Jan 2019 23:58:28 +0000"  >&lt;p&gt;We don&apos;t expect that this will ever be a thing we will want to allow.&lt;/p&gt;</comment>
                            <comment id="1869188" author="greg.mckeon" created="Thu, 19 Apr 2018 18:50:03 +0000"  >&lt;p&gt;moving to query team because linked issue is on query.&lt;/p&gt;</comment>
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