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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>
    </build-info>


<item>
            <title>[SERVER-76777] Deadlock between index build external abort and self abort</title>
                <link>https://jira.mongodb.org/browse/SERVER-76777</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;On detecting an indexing error, the build aborts immediately and proceeds to cleanup. During cleanup, there&apos;s a check to see if the index build is &lt;a href=&quot;https://github.com/10gen/mongo/blob/d66daf618a9005eaba4a8c9fa3746ef27ab80427/src/mongo/db/index_builds_coordinator.cpp#L2805&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;already in kAborted state&lt;/a&gt;. If an external aborter concurrently set the state to kAborted, before the builder performs the check, then the builder will exit early. On the other hand, it can be the case that the external abort happens after the builder checks, in which case we can hit a deadlock between the external and internal abort.&lt;/p&gt;

&lt;p&gt;External abort happening before the check:&lt;/p&gt;
&lt;div class=&apos;table-wrap&apos;&gt;
&lt;table class=&apos;confluenceTable&apos;&gt;&lt;tbody&gt;
&lt;tr&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;Collection drop (external abort) &lt;/th&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;Index Builder (self abort)&lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Indexing error (still kInProgress)&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Transitioning to cleanup code&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;abortIndexBuildByBuildUUID&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Coll Lock MODE_X&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;setState(kAborted)&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;killOp&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;_completeAbort&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;wait for future&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;replState-&amp;gt;isAborted() (true)&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;signal promise&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;future wait ends&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;/div&gt;


&lt;p&gt;External abort after the check (&lt;b&gt;deadlock&lt;/b&gt;):&lt;/p&gt;
&lt;div class=&apos;table-wrap&apos;&gt;
&lt;table class=&apos;confluenceTable&apos;&gt;&lt;tbody&gt;
&lt;tr&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;Collection drop (external abort) &lt;/th&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;Index Builder (self abort)&lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Indexing error (still kInProgress)&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;replState-&amp;gt;isAborted() (false)&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;abortIndexBuildByBuildUUID&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Coll Lock MODE_X&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;setState(kAborted)&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;killOp&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;_completeAbort&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;wait for future (stuck here)&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;proceed with self abort&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Coll Lock MODE_X (waiting for lock)&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;...&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;signal promise (never gets here)&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;/div&gt;
</description>
                <environment></environment>
        <key id="2330749">SERVER-76777</key>
            <summary>Deadlock between index build external abort and self abort</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="yujin.kang@mongodb.com">Yujin Kang Park</assignee>
                                    <reporter username="yujin.kang@mongodb.com">Yujin Kang Park</reporter>
                        <labels>
                    </labels>
                <created>Wed, 3 May 2023 10:02:14 +0000</created>
                <updated>Sun, 29 Oct 2023 21:22:06 +0000</updated>
                            <resolved>Fri, 12 May 2023 07:57:43 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.0-rc2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5431607" author="xgen-internal-githook" created="Wed, 17 May 2023 14:03:52 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Yu Jin Kang Park&apos;, &apos;email&apos;: &apos;yujin.kang@mongodb.com&apos;, &apos;username&apos;: &apos;ykangpark&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76777&quot; title=&quot;Deadlock between index build external abort and self abort&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76777&quot;&gt;&lt;del&gt;SERVER-76777&lt;/del&gt;&lt;/a&gt; Retry coll lock acquisition on self abort&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ebddcadadbcd8e5a1f867772963475d48766dfeb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ebddcadadbcd8e5a1f867772963475d48766dfeb&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5418206" author="xgen-internal-githook" created="Thu, 11 May 2023 16:01:20 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Yu Jin Kang Park&apos;, &apos;email&apos;: &apos;yujin.kang@mongodb.com&apos;, &apos;username&apos;: &apos;ykangpark&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76777&quot; title=&quot;Deadlock between index build external abort and self abort&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76777&quot;&gt;&lt;del&gt;SERVER-76777&lt;/del&gt;&lt;/a&gt; Retry lock coll lock acquisition on self abort&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/837ff506b122b33005d9fe451a0918b497cefeb1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/837ff506b122b33005d9fe451a0918b497cefeb1&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="2335525">SERVER-76935</issuekey>
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            <issuekey id="2298545">SERVER-75308</issuekey>
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