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    <title>MongoDB Jira</title>
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    <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-37980] Add a function to the index builds interface to return the build UUID given a namespace and index name and hook it up for listIndexes to use</title>
                <link>https://jira.mongodb.org/browse/SERVER-37980</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There may be race conditions to handle between getting the index catalog entries and accessing the index build interface. I&apos;m not sure whether it&apos;s important to give a snapshot view of indexes via listIndexes, in which case we can cut corners and simplify.&lt;/p&gt;

&lt;p&gt;Questions to be addressed in regards to initial sync: if listIndexes returns cursor results, and we are racily adding builderUUIDs, does this affect what we expect to see in the oplog? Like seeing an oplog entry when we don&#8217;t expect one? Does the catalog index info have to be acquired at the same timestamp as the config.system.indexBuilds data?&lt;/p&gt;</description>
                <environment></environment>
        <key id="630134">SERVER-37980</key>
            <summary>Add a function to the index builds interface to return the build UUID given a namespace and index name and hook it up for listIndexes to use</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="13201">Fixed</resolution>
                                        <assignee username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                            <label>nyc</label>
                    </labels>
                <created>Wed, 7 Nov 2018 14:16:52 +0000</created>
                <updated>Sun, 29 Oct 2023 22:26:48 +0000</updated>
                            <resolved>Wed, 5 Feb 2020 00:24:54 +0000</resolved>
                                                    <fixVersion>4.3.4</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="2784006" author="xgen-internal-githook" created="Wed, 5 Feb 2020 00:24:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;GWlodarek&apos;, &apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-37980&quot; title=&quot;Add a function to the index builds interface to return the build UUID given a namespace and index name and hook it up for listIndexes to use&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-37980&quot;&gt;&lt;del&gt;SERVER-37980&lt;/del&gt;&lt;/a&gt; Add a function to the index builds interface to return the build UUID given a namespace and index name and hook it up for listIndexes to use&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b4ba41a4d11da77437188f3f5d66b003e8ecffac&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b4ba41a4d11da77437188f3f5d66b003e8ecffac&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2157579" author="milkie" created="Wed, 20 Feb 2019 20:35:51 +0000"  >&lt;p&gt;I believe initial sync, when processing oplog entries, will need to ignore startIndexBuild oplog entries that reference a buildUUID for an index build that is already started.  That should solve any races.&lt;br/&gt;
Another issue is that an index build could begin and end, and the index dropped, and another index build with the same spec started, prior to the listIndexes command getting around to listing things.  This would mean when initial sync starts processing the oplog, it will attempt to build an index that is in conflict with what listIndexes told us.  I think in order to solve this, initial sync needs to take note of what index builds need to be started (i.e. whatever listIndexes says is in progress), but it shouldn&apos;t actually start the index builds until either initial sync finishes replaying the oplog, or it encounters an abort or commit for that index.&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="674857">SERVER-39087</issuekey>
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            <issuelink>
            <issuekey id="685971">SERVER-39453</issuekey>
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            <issuekey id="1333238">SERVER-47842</issuekey>
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