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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-59075] Create temporary RecordStore in HashAgg stage</title>
                <link>https://jira.mongodb.org/browse/SERVER-59075</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Before spilling can be done in the HashAgg stage, we need to be able to create a temporary RecordStore from SBE.&lt;/p&gt;

&lt;p&gt;There are some complications around allowing writes on the recovery unit before this can be done. In the classic engine (see &lt;a href=&quot;https://github.com/mongodb/mongo/blob/56cf8bab5418b4895a9c93677d590a3afc45759a/src/mongo/db/pipeline/process_interface/common_mongod_process_interface.cpp#L146-L153&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here)&lt;/a&gt; this is done by abandoning the current snapshot and calling&#160;setPrepareConflictBehavior(). For SBE, this will not be an option.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1840130">SERVER-59075</key>
            <summary>Create temporary RecordStore in HashAgg stage</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="eric.cox@mongodb.com">Eric Cox</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                    </labels>
                <created>Tue, 3 Aug 2021 20:28:39 +0000</created>
                <updated>Sun, 29 Oct 2023 21:49:57 +0000</updated>
                            <resolved>Fri, 15 Oct 2021 00:27:41 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4125402" author="xgen-internal-githook" created="Thu, 14 Oct 2021 23:01:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Eric Cox&apos;, &apos;email&apos;: &apos;eric.cox@mongodb.com&apos;, &apos;username&apos;: &apos;ericox&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-59075&quot; title=&quot;Create temporary RecordStore in HashAgg stage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-59075&quot;&gt;&lt;del&gt;SERVER-59075&lt;/del&gt;&lt;/a&gt; Create temporary RecordStore in HashAgg stage&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d8781cb284af784447af76e1a7bcebc4079cc4c9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d8781cb284af784447af76e1a7bcebc4079cc4c9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3980459" author="louis.williams" created="Wed, 4 Aug 2021 14:33:29 +0000"  >&lt;p&gt;I wonder if it makes sense to have all read-only queries set kIgnoreConflictsAllowWrites earlier on. We (generally speaking) only need to enforce prepare conflicts for writes since ignoring prepare conflicts violates snapshot isolation and usually shows an earlier version of a document or none at all. For writes, since MongoDB guarantees snapshot isolation in transactions, this leads to bugs because a transaction can make a decision or calculation based on stale information. For reads, the result of skipping prepared updates is much more benign since our queries only guarantee read-committed isolation anyways.&lt;/p&gt;</comment>
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            <issuekey id="1815257">SERVER-58436</issuekey>
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            <issuekey id="1875450">SERVER-59969</issuekey>
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