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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-12224] Allow an explicit padding (or total size) to be specified when inserting new documents</title>
                <link>https://jira.mongodb.org/browse/SERVER-12224</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;While the automatic padding factor is a good first-order approximation for determining data growth, it&apos;s not adequate for some stores in which the application can know in advance how large a document might grow to and in which growth has serious performance implications.&lt;/p&gt;

&lt;p&gt;In this case, MongoDB suggests &lt;a href=&quot;http://docs.mongodb.org/manual/faq/developers/#can-i-manually-pad-documents-to-prevent-moves-during-updates&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;adding manual padding&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;It would be nice if MongoDB supported this explicit padding naturally as part of the insert query. The insert (and probably upsert and save) operations would be extended with a &apos;padding_bytes&apos; and/or a &apos;min_allocation_bytes&apos; parameter (or similar) such that the insert operation would allocate a minimum amount of space for that document. For example::&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;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 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;# ensure the doc is saved with a total allocation no less than 512 bytes&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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.my_items.insert({foo: &quot;bar&quot;}, {padding_bytes: 512})&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;

&lt;p&gt;It appears that currently the insert operation doesn&apos;t accept any optional parameters, so this change would require extending that signature or otherwise providing such a mechanism.&lt;/p&gt;

&lt;p&gt;The advantages of this technique over the prescribed technique are clear:&lt;/p&gt;

&lt;p&gt;1) Only one round trip to save the document.&lt;br/&gt;
2) Dummy data doesn&apos;t need to be constructed nor transmitted.&lt;br/&gt;
3) If &apos;min_allocation_bytes&apos; is used, the total allocation is explicit rather than dependent on the size of the essential document.&lt;br/&gt;
4) The clients&apos; usage is much simpler.&lt;/p&gt;</description>
                <environment></environment>
        <key id="104034">SERVER-12224</key>
            <summary>Allow an explicit padding (or total size) to be specified when inserting new documents</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="jason.coombs@yougov.com">Jason R. Coombs</reporter>
                        <labels>
                    </labels>
                <created>Tue, 31 Dec 2013 20:08:11 +0000</created>
                <updated>Tue, 6 Dec 2022 05:13:41 +0000</updated>
                            <resolved>Fri, 14 Sep 2018 20:06:30 +0000</resolved>
                                                                    <component>MMAPv1</component>
                    <component>Storage</component>
                                        <votes>1</votes>
                                    <watches>4</watches>
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            <issuekey id="13124">SERVER-1810</issuekey>
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