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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[DOCS-657] Docs don&apos;t cover some details regarding ensureIndex()</title>
                <link>https://jira.mongodb.org/browse/DOCS-657</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The documentation doesn&apos;t cover the following about the behavior of ensureIndex():&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;What happens when multiple ensureIndex commands are run at the same time.  (Answer: if there is no index present, the first will create the index entry in the system.indexes collection, and the rest are no-ops.)&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Noting that all ensureIndex() does is put an entry in the &apos;system.indexes&apos; collection, which immediately kicks off the index build operation&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Noting that there is no way to interrupt an index build once it has begun&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Emphasising that all other operations will block while an index build is in progress&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="54384">DOCS-657</key>
            <summary>Docs don&apos;t cover some details regarding ensureIndex()</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="sam.kleinman">Sam Kleinman</assignee>
                                    <reporter username="william.zola@10gen.com">William Zola</reporter>
                        <labels>
                    </labels>
                <created>Thu, 25 Oct 2012 17:39:51 +0000</created>
                <updated>Mon, 30 Oct 2023 22:34:19 +0000</updated>
                            <resolved>Thu, 8 Nov 2012 21:24:30 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="184284" author="auto" created="Thu, 8 Nov 2012 21:24:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-11-08T21:23:09Z&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-657&quot; title=&quot;Docs don&amp;#39;t cover some details regarding ensureIndex()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-657&quot;&gt;&lt;del&gt;DOCS-657&lt;/del&gt;&lt;/a&gt; clarification of ensureIndex behavior&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/c1e9fd2573bf6bb0f0381b7019cfa6bef0592088&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/c1e9fd2573bf6bb0f0381b7019cfa6bef0592088&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="184276" author="samk" created="Thu, 8 Nov 2012 21:13:01 +0000"  >&lt;p&gt;adding these notes modulo background indexing capabilities.&lt;/p&gt;</comment>
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