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    <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-34108] Rebuilding unfinished unindexes one at a time can error</title>
                <link>https://jira.mongodb.org/browse/SERVER-34108</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;At startup, all unfinished indexes are rebuilt. However, the code rebuilds them &lt;a href=&quot;https://github.com/mongodb/mongo/blob/d0bf5fbe535b71e3127d59a01e7fab80425f66e6/src/mongo/db/repair_database_and_check_version.cpp#L351-L354&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;one index at a time&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;If there are multiple unfinished indexes &lt;tt&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/0d409c4d63/src/mongo/db/catalog/index_catalog_impl.cpp#L222-L225&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;`checkUnfinished`&lt;/a&gt;&lt;/tt&gt; will return an error, that in this case, crashes the server.&lt;/p&gt;

&lt;p&gt;Alternatively, the index rebuilding code for opening the catalog &lt;a href=&quot;https://github.com/mongodb/mongo/blob/db787fb0a1627756a2a9204b2716ea4f4b9f3ea7/src/mongo/db/catalog/catalog_control.cpp#L109-L132&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;rebuilds all indexes simultaneously&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="515855">SERVER-34108</key>
            <summary>Rebuilding unfinished unindexes one at a time can error</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="13201">Fixed</resolution>
                                        <assignee username="daniel.gottlieb@mongodb.com">Daniel Gottlieb</assignee>
                                    <reporter username="daniel.gottlieb@mongodb.com">Daniel Gottlieb</reporter>
                        <labels>
                    </labels>
                <created>Fri, 23 Mar 2018 19:16:39 +0000</created>
                <updated>Sun, 29 Oct 2023 22:33:23 +0000</updated>
                            <resolved>Thu, 12 Apr 2018 16:07:41 +0000</resolved>
                                                    <fixVersion>3.7.4</fixVersion>
                                    <component>Index Maintenance</component>
                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1862615" author="xgen-internal-githook" created="Thu, 12 Apr 2018 16:06:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;daniel.gottlieb@mongodb.com&apos;, &apos;name&apos;: &apos;Daniel Gottlieb&apos;, &apos;username&apos;: &apos;dgottlieb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34108&quot; title=&quot;Rebuilding unfinished unindexes one at a time can error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34108&quot;&gt;&lt;del&gt;SERVER-34108&lt;/del&gt;&lt;/a&gt;: Rebuild all indexes for a collection simultaneously at startup.&lt;/p&gt;

&lt;p&gt;Index builds have a quirk that the only &quot;unfinished&quot; indexes allowed on a&lt;br/&gt;
collection are those that are being built. Additionally, all finished indexes&lt;br/&gt;
will be initialized from disk. Storage recovery at startup must rebuild all&lt;br/&gt;
indexes at the same time to avoid these failure code paths.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/931390bc0fdb488bc30f6b37ca5113ae8cf9b66d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/931390bc0fdb488bc30f6b37ca5113ae8cf9b66d&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="515388">SERVER-34075</issuekey>
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