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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-3635] for non in mem yielding, touch / check whole record not just beginning</title>
                <link>https://jira.mongodb.org/browse/SERVER-3635</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;See QA-10&lt;/p&gt;

&lt;p&gt;4) It looks like we only check that the beginning of a record is in memory, not the end. So if we fall back to using process info to see if a record is in memory we might get a lot of false positives about records being in memory when only the beginning of the record is - particularly if we are reading back to back medium to large size docs and a doc seeds the beginning of the following doc into memory. &lt;/p&gt;

&lt;p&gt;6) It looks like when we are calling touch() we currently just touch the beginning of a record not the whole thing. &lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;delete {} - in this case the new code was better on average. With the new code time to acquire a lock was still a lot slower running against deletes than running against nothing - potentially running into the issue described in 4) above&lt;/li&gt;
&lt;/ul&gt;
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                <environment></environment>
        <key id="21120">SERVER-3635</key>
            <summary>for non in mem yielding, touch / check whole record not just beginning</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="aaron">Aaron Staple</reporter>
                        <labels>
                    </labels>
                <created>Wed, 17 Aug 2011 18:49:38 +0000</created>
                <updated>Wed, 15 Aug 2012 14:04:14 +0000</updated>
                            <resolved>Thu, 5 Apr 2012 14:57:57 +0000</resolved>
                                                                    <component>Concurrency</component>
                                        <votes>0</votes>
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            <issuekey id="28209">SERVER-4667</issuekey>
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            <issuekey id="14750">SERVER-2563</issuekey>
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