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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-41035] Rollback should kill all user operations before taking RSTL lock in X.</title>
                <link>https://jira.mongodb.org/browse/SERVER-41035</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, there is a&#160;&#160;&lt;b&gt;3 way deadlock&lt;/b&gt;. Assume that we are transitioning from secondary to rollback.&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Thread A (Read thread) &#160;acquires RSTL lock in IX and &#160;blocked by a prepared txn due to prepare conflict.&lt;/li&gt;
	&lt;li&gt;Rollback enqueues RSTL lock in X mode. And blocked behind A.&lt;/li&gt;
	&lt;li&gt;Prepared txn won&#8217;t be able commit until we transition out of rollback.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;&lt;del&gt;Alternatively, thread A might have got blocked on prepared transaction due to conflicting DB/ collection lock. For eg. dbhash cmd.&lt;/del&gt;&lt;/p&gt;

&lt;p&gt;EDIT: Blocked due to conflicting mongoDB locks&#160; is not possible as secondary prepared txn yield mongoDB locks.&lt;/p&gt;</description>
                <environment></environment>
        <key id="759612">SERVER-41035</key>
            <summary>Rollback should kill all user operations before taking RSTL lock in X.</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="judah.schvimer@mongodb.com">Judah Schvimer</assignee>
                                    <reporter username="suganthi.mani@mongodb.com">Suganthi Mani</reporter>
                        <labels>
                    </labels>
                <created>Tue, 7 May 2019 14:36:26 +0000</created>
                <updated>Sun, 29 Oct 2023 22:21:16 +0000</updated>
                            <resolved>Fri, 17 May 2019 17:32:08 +0000</resolved>
                                                    <fixVersion>4.1.12</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2253293" author="judah.schvimer" created="Mon, 20 May 2019 20:16:39 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41216&quot; title=&quot;Rename InterruptedDueToStepDown error code to InterruptedDueToReplStateChange&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41216&quot;&gt;&lt;del&gt;SERVER-41216&lt;/del&gt;&lt;/a&gt; is complete so we now kill operations during rollback with &lt;tt&gt;InterruptedDueToReplStateChange&lt;/tt&gt;.&lt;/p&gt;</comment>
                            <comment id="2250798" author="judah.schvimer" created="Fri, 17 May 2019 18:00:16 +0000"  >&lt;p&gt;For documentation and drivers: we now kill all user operations on entering rollback before we close connections. We currently do so with the code &lt;tt&gt;NotMasterOrSecondary&lt;/tt&gt; but we plan to change that in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41216&quot; title=&quot;Rename InterruptedDueToStepDown error code to InterruptedDueToReplStateChange&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41216&quot;&gt;&lt;del&gt;SERVER-41216&lt;/del&gt;&lt;/a&gt; to &lt;tt&gt;InterruptedDueToReplStateChange&lt;/tt&gt;. Both of these are retryable error codes already so this should have limited downstream impact.&lt;/p&gt;</comment>
                            <comment id="2250714" author="xgen-internal-githook" created="Fri, 17 May 2019 17:29:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Judah Schvimer&apos;, &apos;email&apos;: &apos;judah@mongodb.com&apos;, &apos;username&apos;: &apos;judahschvimer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41035&quot; title=&quot;Rollback should kill all user operations before taking RSTL lock in X.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41035&quot;&gt;&lt;del&gt;SERVER-41035&lt;/del&gt;&lt;/a&gt; Rollback should kill all user operations before taking RSTL lock in X&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1d1a7182c70a4c13782af9a60067cac5008ca3c6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1d1a7182c70a4c13782af9a60067cac5008ca3c6&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10320">
                    <name>Documented</name>
                                                                <inwardlinks description="is documented by">
                                        <issuelink>
            <issuekey id="771814">DOCS-12710</issuekey>
        </issuelink>
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                                            <outwardlinks description="related to">
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            <issuekey id="770970">SERVER-41216</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="617120">SERVER-37574</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="736582">SERVER-40594</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="740577">SERVER-40700</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="738609">SERVER-40641</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="759654">SERVER-41037</issuekey>
        </issuelink>
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