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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-13060] powerOf2Sizes still default when mongod started with --setParameter newCollectionsUsePowerOf2Sizes=false </title>
                <link>https://jira.mongodb.org/browse/SERVER-13060</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I started mongod with --setParameter newCollectionsUsePowerOf2Sizes=false, then created a new collection and db.$collection.stats() has userFlags:1 which means that powerOf2Sizes is enabled for that collection.&lt;/p&gt;

&lt;p&gt;Given the work described here, shouldn&apos;t this not have used powerOf2Sizes?&lt;/p&gt;</description>
                <environment></environment>
        <key id="117932">SERVER-13060</key>
            <summary>powerOf2Sizes still default when mongod started with --setParameter newCollectionsUsePowerOf2Sizes=false </summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="dan@mongodb.com">Daniel Pasette</assignee>
                                    <reporter username="mdcallag">Mark Callaghan</reporter>
                        <labels>
                    </labels>
                <created>Wed, 5 Mar 2014 20:26:07 +0000</created>
                <updated>Mon, 11 Jul 2016 17:16:27 +0000</updated>
                            <resolved>Thu, 6 Mar 2014 20:41:17 +0000</resolved>
                                    <version>2.6.0-rc0</version>
                                    <fixVersion>2.6.0-rc2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="511012" author="xgen-internal-githook" created="Thu, 6 Mar 2014 20:40:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;name&apos;: u&apos;Dan Pasette&apos;, u&apos;email&apos;: u&apos;dan@10mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13060&quot; title=&quot;powerOf2Sizes still default when mongod started with --setParameter newCollectionsUsePowerOf2Sizes=false &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13060&quot;&gt;&lt;del&gt;SERVER-13060&lt;/del&gt;&lt;/a&gt; restore --setParameter newCollectionsUsePowerOf2Sizes functionality&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0b575dc0ba7a71d22bc4661d76f857d7be8a22ec&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0b575dc0ba7a71d22bc4661d76f857d7be8a22ec&lt;/a&gt;&lt;/p&gt;</comment>
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                            <customfieldvalue>&lt;p&gt;Started mongod with&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;   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;numactl --interleave=all bin/mongod --config bin/mongodb.config --setParameter newCollectionsUsePowerOf2Sizes=false&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Confirm command line option was used:&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;&amp;gt; db.adminCommand({&quot;getParameter&quot;:1, &quot;newCollectionsUsePowerOf2Sizes&quot;:1})&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;{ &quot;newCollectionsUsePowerOf2Sizes&quot; : false, &quot;ok&quot; : 1 }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Look at collection created after mongod was started and it uses powerOf2Sizes because userFlags:1&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;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;&amp;gt; db.sbtest2.stats()&lt;br/&gt;
{&lt;br/&gt;
        &quot;ns&quot; : &quot;sbtest.sbtest2&quot;,&lt;br/&gt;
        &quot;count&quot; : 1964000,&lt;br/&gt;
        &quot;size&quot; : 471360000,&lt;br/&gt;
        &quot;avgObjSize&quot; : 240,&lt;br/&gt;
        &quot;storageSize&quot; : 629637120,&lt;br/&gt;
        &quot;numExtents&quot; : 16,&lt;br/&gt;
        &quot;nindexes&quot; : 2,&lt;br/&gt;
        &quot;lastExtentSize&quot; : 168742912,&lt;br/&gt;
        &quot;paddingFactor&quot; : 1,&lt;br/&gt;
        &quot;systemFlags&quot; : 1,&lt;br/&gt;
        &quot;userFlags&quot; : 1,&lt;br/&gt;
        &quot;totalIndexSize&quot; : 124046272,&lt;br/&gt;
        &quot;indexSizes&quot; : &lt;/p&gt;
{
                &quot;_id_&quot; : 54820080,
                &quot;k_1&quot; : 69226192
        }
&lt;p&gt;,&lt;br/&gt;
        &quot;ok&quot; : 1&lt;br/&gt;
}&lt;br/&gt;
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