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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-56338] Allow resharding&apos;s CRUD application and session application to be concurrent</title>
                <link>https://jira.mongodb.org/browse/SERVER-56338</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/666003777e374d783ed1a450bcd4056d6ea00f95/src/mongo/db/s/resharding/resharding_oplog_applier.cpp#L152-L155&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ReshardingOplogApplier first does a round of CRUD application followed by a round of session application&lt;/a&gt;. This is because the ReshardingOplogBatchPreparer mutates the repl::OplogEntries by calling setIsForReshardingSessionApplication(true) on them.&lt;/p&gt;

&lt;p&gt;If whether to do CRUD application versus session application was a property of the writer vector instead of the oplog entry itself, then tasks for both could be run concurrently. Allowing CRUD application and session application to be concurrent could reduce the overall makespan of applying a single batch.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1691119">SERVER-56338</key>
            <summary>Allow resharding&apos;s CRUD application and session application to be concurrent</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="max.hirschhorn@mongodb.com">Max Hirschhorn</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Sun, 25 Apr 2021 22:25:53 +0000</created>
                <updated>Sun, 29 Oct 2023 21:54:32 +0000</updated>
                            <resolved>Fri, 7 May 2021 02:15:01 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3760070" author="xgen-internal-githook" created="Fri, 7 May 2021 00:02:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;, &apos;username&apos;: &apos;visemet&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56338&quot; title=&quot;Allow resharding&amp;#39;s CRUD application and session application to be concurrent&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56338&quot;&gt;&lt;del&gt;SERVER-56338&lt;/del&gt;&lt;/a&gt; Make resharding CRUD and session application concurrent.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9c4a555660fd6d7c8ec36b1c8a1a6eb60fe9149a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9c4a555660fd6d7c8ec36b1c8a1a6eb60fe9149a&lt;/a&gt;&lt;/p&gt;</comment>
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