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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-44819] Slow remove on large dataset</title>
                <link>https://jira.mongodb.org/browse/SERVER-44819</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We need to delete a large amount of data (as an example from one of our collections we need to delete approximately 1 billion documents).&lt;br/&gt;
&#160;&lt;br/&gt;
Every collection has an index(desc) on a createdAt field so we tried:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.ourCollection.remove({&lt;/span&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&apos;createdAt&apos;&lt;/span&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;: {$lt: ISODate(&lt;/span&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&apos;2019-07-01&apos;&lt;/span&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;)}})&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;Doing this deletes about 1 million documents every hour, which is extremely slow.&lt;br/&gt;
&#160;&lt;br/&gt;
The replica set is continuously being written to.&lt;br/&gt;
&#160;&lt;br/&gt;
How can we remove so much data more efficiently and reliably?&#160;&lt;br/&gt;
&#160;&lt;br/&gt;
v3.6.15&lt;br/&gt;
Amazon Linux AMI release 2018.03&lt;/p&gt;</description>
                <environment></environment>
        <key id="1024059">SERVER-44819</key>
            <summary>Slow remove on large dataset</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="axiodis">Alexandru Martin</reporter>
                        <labels>
                    </labels>
                <created>Mon, 25 Nov 2019 14:34:19 +0000</created>
                <updated>Mon, 25 Nov 2019 15:00:29 +0000</updated>
                            <resolved>Mon, 25 Nov 2019 14:42:10 +0000</resolved>
                                    <version>3.6.15</version>
                                                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="2564414" author="axiodis" created="Mon, 25 Nov 2019 14:55:06 +0000"  >&lt;p&gt;Do you realize that this is actually a performance bug? So if i re-post with the type changed to BUG, will you politely answer me?&#160;&lt;/p&gt;</comment>
                            <comment id="2564386" author="dmitry.agranat" created="Mon, 25 Nov 2019 14:41:44 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=axiodis&quot; class=&quot;user-hover&quot; rel=&quot;axiodis&quot;&gt;axiodis&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;The SERVER project is for bugs and feature suggestions for the MongoDB server. As this ticket does not appear to be a bug, I will now close it. If you need further assistance with troubleshooting or performance, I encourage you to ask our community by posting on the &lt;a href=&quot;https://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or on &lt;a href=&quot;https://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Dima&lt;/p&gt;</comment>
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