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        <build-date>13-04-2023</build-date>
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            <title>[JAVA-3864] Approximate count distinct accumulator</title>
                <link>https://jira.mongodb.org/browse/JAVA-3864</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;h4&gt;&lt;a name=&quot;Summary&quot;&gt;&lt;/a&gt;Summary&lt;/h4&gt;
&lt;p&gt;Add an approximate count distinct accumulator.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Motivation&quot;&gt;&lt;/a&gt;Motivation&lt;/h4&gt;
&lt;p&gt;Exact count distinct (PM-1936) is an important analytical tool but it is computationally expensive (see Appendix in here). Therefore, users often prefer to use an approximate statistic that can be applied to large volumes of data. This effort will also pave the way to support approximate count distinct in on-demand materialized views, as the exact count distinct accumulator cannot easily be incremented.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1434038">JAVA-3864</key>
            <summary>Approximate count distinct accumulator</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="10033" iconUrl="https://jira.mongodb.org/images/icons/statuses/information.png" description="Status for tickets that need to be escalated and unblocked on our team.">Blocked</status>
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                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
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                <created>Thu, 6 Aug 2020 18:10:03 +0000</created>
                <updated>Wed, 22 Jun 2022 21:10:45 +0000</updated>
                                                                                                <votes>0</votes>
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