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    <title>MongoDB Jira</title>
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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-79539] Support general block-based stages in stage builders</title>
                <link>https://jira.mongodb.org/browse/SERVER-79539</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The first step before we can have a block-based $group stage, is that the stage builder has a protocol to let SlotBasedStageBuilder::buildGroup inform the SlotBasedStageBuilder::build method building its source stage (via PlanStageReqs) that such stage is allowed to return block-based slots in its PlanStageOutputs.&lt;br/&gt;
The block-producing stages (currently just SlotBasedStageBuilder::buildUnpackTsBucket) would not insert the BlockToRowStage, and delegate the insertion to the first buildXXX method that accepts blocks in input but cannot generate blocks in output (because the stage output is not a block, or because the parent stage didn&apos;t signal in the PlanStageReqs that it can handle blocks)&lt;/p&gt;</description>
                <environment></environment>
        <key id="2405544">SERVER-79539</key>
            <summary>Support general block-based stages in stage builders</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="13201">Fixed</resolution>
                                        <assignee username="alberto.massari@mongodb.com">Alberto Massari</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                    </labels>
                <created>Mon, 31 Jul 2023 19:57:50 +0000</created>
                <updated>Fri, 17 Nov 2023 13:22:06 +0000</updated>
                            <resolved>Fri, 17 Nov 2023 13:22:06 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5887840" author="xgen-internal-githook" created="Fri, 17 Nov 2023 12:00:18 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Alberto Massari&apos;, &apos;email&apos;: &apos;alberto.massari@mongodb.com&apos;, &apos;username&apos;: &apos;albymassari&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-79539&quot; title=&quot;Support general block-based stages in stage builders&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-79539&quot;&gt;&lt;del&gt;SERVER-79539&lt;/del&gt;&lt;/a&gt; Stage builder supports delayed transition from block to scalar processing&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4f50b110c62d578a908b96b22149453486de7e75&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4f50b110c62d578a908b96b22149453486de7e75&lt;/a&gt;&lt;/p&gt;</comment>
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