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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-43683] Make find command with allowDiskUse option work against a view</title>
                <link>https://jira.mongodb.org/browse/SERVER-43683</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Today, a find command can be executed against a view which contains blocking stages like $sort or $group that can consume a lot of memory. These stages will fail at runtime if the data size exceeds some memory threshold. If the user runs an &lt;tt&gt;aggregate&lt;/tt&gt; command against the view, they can specify that disk use is allowed during execution of the query. The execution engine will relieve memory consumption by spilling to disk, allowing the query to succeed.&lt;/p&gt;

&lt;p&gt;The same cannot currently be achieved with a &lt;tt&gt;find&lt;/tt&gt; command. However, we recently added support for the &lt;tt&gt;allowDiskUse&lt;/tt&gt; option in the &lt;tt&gt;find&lt;/tt&gt; command: see related ticket &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42077&quot; title=&quot;Add &amp;#39;allowDiskUse&amp;#39; option to find command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42077&quot;&gt;&lt;del&gt;SERVER-42077&lt;/del&gt;&lt;/a&gt;. This ticket tracks the work to make sure that the &lt;tt&gt;allowDiskUse&lt;/tt&gt; option is respected when executing a find command against a view, and to add an integration test proving this works correctly.&lt;/p&gt;</description>
                <environment></environment>
        <key id="943098">SERVER-43683</key>
            <summary>Make find command with allowDiskUse option work against a view</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="13201">Fixed</resolution>
                                        <assignee username="david.storch@mongodb.com">David Storch</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Fri, 27 Sep 2019 15:26:19 +0000</created>
                <updated>Sun, 29 Oct 2023 22:16:44 +0000</updated>
                            <resolved>Fri, 11 Oct 2019 19:05:07 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="2478381" author="xgen-internal-githook" created="Fri, 11 Oct 2019 18:15:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;David Storch&apos;, &apos;username&apos;: &apos;dstorch&apos;, &apos;email&apos;: &apos;david.storch@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43683&quot; title=&quot;Make find command with allowDiskUse option work against a view&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43683&quot;&gt;&lt;del&gt;SERVER-43683&lt;/del&gt;&lt;/a&gt; Test that &apos;allowDiskUse&apos; works as expected for find command against views.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b32f535baeaa6832472373c2d19dc2ef33d80c4a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b32f535baeaa6832472373c2d19dc2ef33d80c4a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2474318" author="david.storch" created="Wed, 9 Oct 2019 17:45:45 +0000"  >&lt;p&gt;This behavior already works as expected as of the changes for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7694&quot; title=&quot;external sort for find command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7694&quot;&gt;&lt;del&gt;SERVER-7694&lt;/del&gt;&lt;/a&gt;. The only remaining work for this ticket is to add an integration test.&lt;/p&gt;</comment>
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            <issuekey id="967763">DOCS-13096</issuekey>
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                            <customfieldvalue>Prior to this work, there was no way to specify &amp;#39;allowDiskUse:true&amp;#39; when executing a find command against a view. This ticket (combined with work from &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42077&quot; title=&quot;Add &amp;#39;allowDiskUse&amp;#39; option to find command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42077&quot;&gt;&lt;strike&gt;SERVER-42077&lt;/strike&gt;&lt;/a&gt; and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7694&quot; title=&quot;external sort for find command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7694&quot;&gt;&lt;strike&gt;SERVER-7694&lt;/strike&gt;&lt;/a&gt;) ensures that when a user adds the &amp;#39;allowDiskUse:true&amp;#39; option to a find command executed against a view, any $sort or $group stages that would consume too much memory will spill to disk. Previously, users could only opt into this behavior by running an aggregate command against a view.</customfieldvalue>

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