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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-58548] Support accumulator initializer expression in HashAgg</title>
                <link>https://jira.mongodb.org/browse/SERVER-58548</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Each accumulator has an initializer expression that can be used to initialize an accumulator in certain scenarios. One example of this is when DSGroup creates a fresh group, and another is when DSGroup reads spilled accumulator states from disk and re-initializes groups.&lt;/p&gt;

&lt;p&gt;We need a mechanism to initialize agg expressions in sbe. This could be done by augmenting HashAgg to evaluate an initializer expression.&lt;/p&gt;

&lt;p&gt;We can think of other ways as well.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1819265">SERVER-58548</key>
            <summary>Support accumulator initializer expression in HashAgg</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="eric.cox@mongodb.com">Eric Cox</reporter>
                        <labels>
                    </labels>
                <created>Wed, 14 Jul 2021 19:11:30 +0000</created>
                <updated>Tue, 6 Dec 2022 01:06:59 +0000</updated>
                            <resolved>Mon, 11 Oct 2021 17:49:53 +0000</resolved>
                                                                    <component>Query Execution</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4116397" author="JIRAUSER1257640" created="Mon, 11 Oct 2021 17:49:53 +0000"  >&lt;p&gt;Spiling implementation will take care of this for us.&lt;/p&gt;</comment>
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