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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-53317] More efficient min/max updates for time-series</title>
                <link>https://jira.mongodb.org/browse/SERVER-53317</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The goal is to avoid generating &lt;tt&gt;$set&lt;/tt&gt; update operations if no field in &lt;tt&gt;control.min&lt;/tt&gt; or &lt;tt&gt;control.max&lt;/tt&gt; is changes, and otherwise to directly generate the &lt;tt&gt;$set&lt;/tt&gt; if the fields that need changes, at a level that could directly become part of an oplog entry, without using aggregation expressions.&lt;/p&gt;

&lt;p&gt;One idea is to have something like a data structure recursively defined that contains an unordered map, a vector, and a BSONObj. If the min/max is an object, the map will be populated. If it&apos;s an array, the vector will be populated. If it&apos;s a leaf, the BSONObj is populated. Then, when &lt;a href=&quot;https://github.com/mongodb/mongo/blob/84cb1c85a16cd62a0fb8bec1958262adb002ae8d/src/mongo/db/timeseries/bucket_catalog.h#L92-L98&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;BucketCatalog::commit&lt;/a&gt; is called, we can either construct the complete min/max object in the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/84cb1c85a16cd62a0fb8bec1958262adb002ae8d/src/mongo/db/commands/write_commands/write_commands.cpp#L232-L233&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;insert case&lt;/a&gt;, or the $set fields in the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/84cb1c85a16cd62a0fb8bec1958262adb002ae8d/src/mongo/db/commands/write_commands/write_commands.cpp#L153-L154&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;update case&lt;/a&gt;. This way, as more inserts occur, we can iterate through the document being inserted and update the current min/max without having to reconstruct the BSONObj every time.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1564321">SERVER-53317</key>
            <summary>More efficient min/max updates for time-series</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="gregory.noma@mongodb.com">Gregory Noma</assignee>
                                    <reporter username="geert.bosch@mongodb.com">Geert Bosch</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Dec 2020 22:08:27 +0000</created>
                <updated>Sun, 29 Oct 2023 21:59:37 +0000</updated>
                            <resolved>Wed, 6 Jan 2021 22:23:08 +0000</resolved>
                                    <version>Backlog</version>
                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3553392" author="ian@10gen.com" created="Thu, 7 Jan 2021 19:20:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: u&apos;evrg-bot-webhook&apos;, &apos;name&apos;: u&apos;Gregory Noma&apos;, &apos;email&apos;: u&apos;gregory.noma@gmail.com&apos;}
&lt;p&gt;Message:&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53317&quot; title=&quot;More efficient min/max updates for time-series&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53317&quot;&gt;&lt;del&gt;SERVER-53317&lt;/del&gt;&lt;/a&gt; Update time-series bucket min/max efficiently&lt;br/&gt;
Branch:master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b58f5c476af6cfd70f9aad86e1e6007e61ec93d0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b58f5c476af6cfd70f9aad86e1e6007e61ec93d0&lt;/a&gt;&lt;/p&gt;</comment>
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