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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-42452] failNonIntentLocksIfWaitNeeded failpoint interrupts lock requests in UninterruptibleLockGuard</title>
                <link>https://jira.mongodb.org/browse/SERVER-42452</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/25d5f6a0b01f261e633587013e4ab8116ea2930a/src/mongo/db/concurrency/lock_state.cpp#L905-L912&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Interrupting the lock request leads to a &lt;tt&gt;LockTimeout&lt;/tt&gt; exception&lt;/a&gt; which is known not to be handled by the C++ code due to the presence of the &lt;tt&gt;UninterruptibleLockGuard&lt;/tt&gt; and causes the server to abort. This issue was found during the rollback fuzzer where we suspect background thread (e.g. the TTL monitor) was holding an intent lock on the collection and prevented &lt;a href=&quot;https://github.com/mongodb/mongo/blob/25d5f6a0b01f261e633587013e4ab8116ea2930a/src/mongo/db/catalog/multi_index_block.cpp#L98&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the collection lock acquisition in &lt;tt&gt;MultiIndexBlock::cleanUpAfterBuild()&lt;/tt&gt; for a background index build from being acquired immediately&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="876791">SERVER-42452</key>
            <summary>failNonIntentLocksIfWaitNeeded failpoint interrupts lock requests in UninterruptibleLockGuard</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="max.hirschhorn@mongodb.com">Max Hirschhorn</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Fri, 26 Jul 2019 16:30:50 +0000</created>
                <updated>Sun, 29 Oct 2023 22:18:41 +0000</updated>
                            <resolved>Sat, 27 Jul 2019 07:10:16 +0000</resolved>
                                                    <fixVersion>4.2.1</fixVersion>
                    <fixVersion>4.3.1</fixVersion>
                                    <component>Concurrency</component>
                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="2369267" author="xgen-internal-githook" created="Tue, 13 Aug 2019 20:04:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;username&apos;: &apos;visemet&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42452&quot; title=&quot;failNonIntentLocksIfWaitNeeded failpoint interrupts lock requests in UninterruptibleLockGuard&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42452&quot;&gt;&lt;del&gt;SERVER-42452&lt;/del&gt;&lt;/a&gt; Avoid interrupting uninterruptible requests in lock fp.&lt;/p&gt;

&lt;p&gt;The failNonIntentLocksIfWaitNeeded failpoint shouldn&apos;t interrupt&lt;br/&gt;
uninterruptible lock requests because it&apos;ll lead to a LockTimeout&lt;br/&gt;
exception the calling code is known to not be prepared to handle.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit e547a00bc06de2b84e3cd20d678f0f6bcce01ce1)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f1c1de2000734f4f12dd7a12cf585a25f42b8d62&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f1c1de2000734f4f12dd7a12cf585a25f42b8d62&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2346648" author="xgen-internal-githook" created="Sat, 27 Jul 2019 07:09:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;username&apos;: &apos;visemet&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42452&quot; title=&quot;failNonIntentLocksIfWaitNeeded failpoint interrupts lock requests in UninterruptibleLockGuard&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42452&quot;&gt;&lt;del&gt;SERVER-42452&lt;/del&gt;&lt;/a&gt; Avoid interrupting uninterruptible requests in lock fp.&lt;/p&gt;

&lt;p&gt;The failNonIntentLocksIfWaitNeeded failpoint shouldn&apos;t interrupt&lt;br/&gt;
uninterruptible lock requests because it&apos;ll lead to a LockTimeout&lt;br/&gt;
exception the calling code is known to not be prepared to handle.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e547a00bc06de2b84e3cd20d678f0f6bcce01ce1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e547a00bc06de2b84e3cd20d678f0f6bcce01ce1&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="676854">SERVER-39154</issuekey>
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