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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>[DOCS-4578] Impact and behaviour of index rebuilding in a v2.6 replica set</title>
                <link>https://jira.mongodb.org/browse/DOCS-4578</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;In this DOCS reference: &lt;a href=&quot;http://docs.mongodb.org/manual/core/index-creation/#index-creation-background&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/core/index-creation/#index-creation-background&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Please amend the DOC to add clarity on index build behaviour, in particular the following statements:&lt;/p&gt;

&lt;p&gt;A foreground index build is default, when complete on a replica set primary, it&apos;ll replicate to the secondaries with a foreground build task. The replication worker will take a global DB lock, which will queue reads and writes to all DBs on that server.&lt;br/&gt;
A background index build, when complete on a replica set primary, it&apos;ll replicate to the secondaries with a background build task. The replication worker will not take a global DB lock. Secondary reads will not be affected.&lt;/p&gt;</description>
                <environment></environment>
        <key id="175891">DOCS-4578</key>
            <summary>Impact and behaviour of index rebuilding in a v2.6 replica set</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="9">Done</resolution>
                                        <assignee username="brian.moss@mongodb.com">Brian Moss</assignee>
                                    <reporter username="luke.prochazka@mongodb.com">Luke Prochazka</reporter>
                        <labels>
                            <label>bite-sized</label>
                    </labels>
                <created>Tue, 23 Dec 2014 05:35:29 +0000</created>
                <updated>Mon, 30 Oct 2023 21:50:13 +0000</updated>
                            <resolved>Thu, 18 Jan 2018 01:19:04 +0000</resolved>
                                    <version>mongodb-2.6</version>
                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>1</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1736309" author="xgen-internal-githook" created="Tue, 28 Nov 2017 17:49:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;, &apos;email&apos;: &apos;kallimachos@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify global locks for index replication&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/9b8f3ae232f7f8ad6c36487489b933af1a448eee&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/9b8f3ae232f7f8ad6c36487489b933af1a448eee&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1736305" author="xgen-internal-githook" created="Tue, 28 Nov 2017 17:47:24 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;, &apos;email&apos;: &apos;kallimachos@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify global locks for index replication&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/5f09a33831bc159985dc75b56ea83891a22fd218&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/5f09a33831bc159985dc75b56ea83891a22fd218&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1719944" author="brian.moss" created="Tue, 7 Nov 2017 23:43:49 +0000"  >&lt;p&gt;PR: &lt;a href=&quot;https://github.com/mongodb/docs/pull/3089&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/pull/3089&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1693777" author="xgen-internal-githook" created="Mon, 9 Oct 2017 21:12:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;kallimachos@gmail.com&apos;, &apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify index builds on secondaries&lt;/p&gt;

&lt;p&gt;Clarify when index builds on secondaries are in the foreground or the&lt;br/&gt;
background.&lt;/p&gt;

&lt;p&gt;Closes &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Signed-off-by: kay &amp;lt;kay.kim@10gen.com&amp;gt;&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/c4ba7d519fbdbe0ddc6d7713308e3aec34dcd697&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/c4ba7d519fbdbe0ddc6d7713308e3aec34dcd697&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1693776" author="xgen-internal-githook" created="Mon, 9 Oct 2017 21:12:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;kallimachos@gmail.com&apos;, &apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify index builds on secondaries&lt;/p&gt;

&lt;p&gt;Clarify when index builds on secondaries are in the foreground or the&lt;br/&gt;
background.&lt;/p&gt;

&lt;p&gt;Closes &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Signed-off-by: kay &amp;lt;kay.kim@10gen.com&amp;gt;&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/c4ba7d519fbdbe0ddc6d7713308e3aec34dcd697&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/c4ba7d519fbdbe0ddc6d7713308e3aec34dcd697&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1693770" author="xgen-internal-githook" created="Mon, 9 Oct 2017 21:10:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;kallimachos@gmail.com&apos;, &apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify index builds on secondaries&lt;/p&gt;

&lt;p&gt;Clarify when index builds on secondaries are in the foreground or the&lt;br/&gt;
background.&lt;/p&gt;

&lt;p&gt;Closes &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Signed-off-by: kay &amp;lt;kay.kim@10gen.com&amp;gt;&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/d0bfdc213f21ae7014734d9c05992b7af9085030&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/d0bfdc213f21ae7014734d9c05992b7af9085030&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1693769" author="xgen-internal-githook" created="Mon, 9 Oct 2017 21:10:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;kallimachos@gmail.com&apos;, &apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify index builds on secondaries&lt;/p&gt;

&lt;p&gt;Clarify when index builds on secondaries are in the foreground or the&lt;br/&gt;
background.&lt;/p&gt;

&lt;p&gt;Closes &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Signed-off-by: kay &amp;lt;kay.kim@10gen.com&amp;gt;&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/d0bfdc213f21ae7014734d9c05992b7af9085030&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/d0bfdc213f21ae7014734d9c05992b7af9085030&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1693762" author="xgen-internal-githook" created="Mon, 9 Oct 2017 21:08:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;kallimachos@gmail.com&apos;, &apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify index builds on secondaries&lt;/p&gt;

&lt;p&gt;Clarify when index builds on secondaries are in the foreground or the&lt;br/&gt;
background.&lt;/p&gt;

&lt;p&gt;Closes &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Signed-off-by: kay &amp;lt;kay.kim@10gen.com&amp;gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/715a5741ddcd44f7f239645e496a8e6468b37c7e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/715a5741ddcd44f7f239645e496a8e6468b37c7e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1693761" author="xgen-internal-githook" created="Mon, 9 Oct 2017 21:08:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;kallimachos@gmail.com&apos;, &apos;name&apos;: &apos;Brian Moss&apos;, &apos;username&apos;: &apos;kallimachos&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt; Clarify index builds on secondaries&lt;/p&gt;

&lt;p&gt;Clarify when index builds on secondaries are in the foreground or the&lt;br/&gt;
background.&lt;/p&gt;

&lt;p&gt;Closes &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4578&quot; title=&quot;Impact and behaviour of index rebuilding in a v2.6 replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4578&quot;&gt;&lt;del&gt;DOCS-4578&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Signed-off-by: kay &amp;lt;kay.kim@10gen.com&amp;gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/715a5741ddcd44f7f239645e496a8e6468b37c7e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/715a5741ddcd44f7f239645e496a8e6468b37c7e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1691159" author="brian.moss" created="Fri, 6 Oct 2017 06:52:16 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=luke.prochazka&quot; class=&quot;user-hover&quot; rel=&quot;luke.prochazka&quot;&gt;luke.prochazka&lt;/a&gt; Could you please review &lt;a href=&quot;https://github.com/mongodb/docs/pull/2979&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/pull/2979&lt;/a&gt; for technical accuracy?&lt;/p&gt;</comment>
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