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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-35429] The inner one of nested AutoGetCollectionForReads cannot fall back to take PBWM if the outer one opts out of PBWM</title>
                <link>https://jira.mongodb.org/browse/SERVER-35429</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;For nested AutoGetCollectionForReads, if the outer one already opts out of the PBWM, the inner one could not take the PBWM if there are pending catalog changes, because the ShouldNotConflictWithSecondaryBatchApplicationBlock of the outer one still takes effect. &lt;/p&gt;

&lt;p&gt;The ticket is just for keeping track of this issue because there might be cases where we have nested AutoGetCollectionForReads and want the inner one to take the PBWM. Currently the inner one will try to take the PBWM (&lt;a href=&quot;https://github.com/mongodb/mongo/blob/b98ee66f2867a0a65dcaba1d784ad19caed76a3e/src/mongo/db/db_raii.cpp#L167&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;by unsetting ShouldNotConflictWithSecondaryBatchApplicationBlock&lt;/a&gt;) and think it succeeds. But the reads actually won&apos;t hold the PBWM.&lt;/p&gt;

&lt;p&gt;We could add an invariant or comments to make a note that ShouldNotConflictWithSecondaryBatchApplicationBlock might not work as expected if AutoGetCollectionForRead is nested. &lt;/p&gt;</description>
                <environment></environment>
        <key id="554761">SERVER-35429</key>
            <summary>The inner one of nested AutoGetCollectionForReads cannot fall back to take PBWM if the outer one opts out of PBWM</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="13201">Fixed</resolution>
                                        <assignee username="xiangyu.yao@mongodb.com">Xiangyu Yao</assignee>
                                    <reporter username="xiangyu.yao@mongodb.com">Xiangyu Yao</reporter>
                        <labels>
                    </labels>
                <created>Tue, 5 Jun 2018 22:38:58 +0000</created>
                <updated>Sun, 29 Oct 2023 22:31:02 +0000</updated>
                            <resolved>Thu, 26 Jul 2018 12:22:09 +0000</resolved>
                                    <version>4.0.0</version>
                                    <fixVersion>4.1.2</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1957237" author="xgen-internal-githook" created="Thu, 26 Jul 2018 12:21:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Xiangyu Yao&apos;, &apos;email&apos;: &apos;xiangyu.yao@mongodb.com&apos;, &apos;username&apos;: &apos;xy24&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35429&quot; title=&quot;The inner one of nested AutoGetCollectionForReads cannot fall back to take PBWM if the outer one opts out of PBWM&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35429&quot;&gt;&lt;del&gt;SERVER-35429&lt;/del&gt;&lt;/a&gt; Add lock state checking with PBWM in AutoGetCollectionForRead&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bfc958a0b32c29167f81d1413b82c8d909276791&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bfc958a0b32c29167f81d1413b82c8d909276791&lt;/a&gt;&lt;/p&gt;</comment>
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