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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-46817] Primary and secondaries can disagree on indexBuildsCoordinator worker thread availability</title>
                <link>https://jira.mongodb.org/browse/SERVER-46817</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently Cloner::copyIndexes, on primary builds indexes w/o using indexBuildsCoordinator thread pool, but generates &lt;a href=&quot;https://github.com/mongodb/mongo/blob/35a5d455672e65127a24e7cdb98ea1472124af4a/src/mongo/db/cloner.cpp#L405-L450&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;start and commit&lt;/a&gt; indexBuild oplog entry. This can lead to primary and secondaries disagreeing on indexBuildsCoordinator worker thread availability. consider a case, its a 2 node replica set and thread pool size is 1 and if we get oplog sequence some like below.&lt;/p&gt;

&lt;p&gt;1) startIndexBuild for index x_1 on foo.bar ==&amp;gt; started as part of Cloner::copyIndexes,&lt;br/&gt;
 2) &lt;font color=&quot;#ffab00&quot;&gt;startIndexBuild for index y_1 &lt;/font&gt; on some.random ==&amp;gt; started by user using createIndexes command.&lt;br/&gt;
 3) commitIndexBuild for index x_1&lt;br/&gt;
 4)&lt;font color=&quot;#ffab00&quot;&gt; commitIndexBuild for index y_1&lt;/font&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1266904">SERVER-46817</key>
            <summary>Primary and secondaries can disagree on indexBuildsCoordinator worker thread availability</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="13203">Gone away</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="suganthi.mani@mongodb.com">Suganthi Mani</reporter>
                        <labels>
                    </labels>
                <created>Thu, 12 Mar 2020 02:56:28 +0000</created>
                <updated>Fri, 27 Oct 2023 20:42:18 +0000</updated>
                            <resolved>Thu, 2 Apr 2020 20:58:53 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="2976406" author="milkie" created="Thu, 12 Mar 2020 19:36:07 +0000"  >&lt;p&gt;Perhaps we can change the Cloner to only build indexes on empty collections, as that is the only way it&apos;s used now, we suspect.&lt;/p&gt;</comment>
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