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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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            <title>[SERVER-37981] Remove unnecessary PlanExecutor saveState/restoreState for background index builds</title>
                <link>https://jira.mongodb.org/browse/SERVER-37981</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The code in MultiIndexBlockImpl&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/505114314a5f4309f2857573db442604cb0e2b26/src/mongo/db/catalog/multi_index_block_impl.cpp#L396-L404&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; that saves and restores the plan executor is unnecessary. In the case of yielding, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/505114314a5f4309f2857573db442604cb0e2b26/src/mongo/db/query/plan_yield_policy.cpp#L141&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;PlanYieldPolicy::yield&lt;/a&gt; already saves and restores. In the case of WCEs, the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/505114314a5f4309f2857573db442604cb0e2b26/src/mongo/db/catalog/multi_index_block_impl.cpp#L416-L429&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;try-catch block&lt;/a&gt; also handles saving and restoring. Removing can potentially speed up background index builds by 20%.&lt;/p&gt;</description>
                <environment></environment>
        <key id="630160">SERVER-37981</key>
            <summary>Remove unnecessary PlanExecutor saveState/restoreState for background index builds</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="louis.williams@mongodb.com">Louis Williams</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Wed, 7 Nov 2018 15:07:01 +0000</created>
                <updated>Thu, 8 Nov 2018 15:28:57 +0000</updated>
                            <resolved>Thu, 8 Nov 2018 15:28:57 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2055679" author="louis.williams" created="Thu, 8 Nov 2018 15:28:57 +0000"  >&lt;p&gt;This is incompatible with the current storage engine interface. Not all storage engines keep cursors positioned after commit. While this improves performance on the current background index build code, it is going away once all inserts go through the external sorter.&lt;/p&gt;</comment>
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