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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-7854] Potential bug in rollbacks when running with auth</title>
                <link>https://jira.mongodb.org/browse/SERVER-7854</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;jstests/replsets/rollback2.js and rollback3.js are failing when run with authentication enabled.&lt;/p&gt;

&lt;p&gt;From a git bisect, I found the first commit where the test is failing to be:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;commit 07a6fd4726a8e876266319cd8d22d64111cf8688&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Author: Kristina &amp;lt;kristina@10gen.com&amp;gt;&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Date:   Thu Oct 4 15:18:29 2012 -0400&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    SERVER-1929 Remove unused heartbeat options from stepdown logic&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    Fixed test because stepdown is so much faster that the connection is dead&lt;/span&gt;&lt;/pre&gt;
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		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    by the time ismaster is called.&lt;/span&gt;&lt;/pre&gt;
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&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;


&lt;p&gt;It seems like that commit probably just caused the bug to manifest by changing the timings of things, rather than actually introducing the bug.&lt;/p&gt;


&lt;p&gt;The basic summary of what the test is doing is this:&lt;br/&gt;
1) Set up a replica set with 2 nodes, A and B, and an arbiter.  Do some writes, wait for them to replicated to the secondary.&lt;br/&gt;
2) Isolate node A (by using the replSetTest command with the blind option), wait for node B to become primary.&lt;br/&gt;
3) Do some writes to node B.  These writes &lt;b&gt;should&lt;/b&gt; be rolled back&lt;br/&gt;
4) Blind node B, then unblind node A.  The node Awill take over as primary, but won&apos;t see the writes from step 3.&lt;br/&gt;
5) Do some new writes to node A&lt;br/&gt;
6) Unblind node B.  This should cause it to rollback the writes from step 3.&lt;/p&gt;

&lt;p&gt;The bug is that no rollback is happening in step 6.  I changed the test to print the oplogs of both nodes after step 6 and node B has all the original writes, then the writes it got in step 3, and THEN the writes that node A got in step 5.  B synced off A without first rolling back to a common point.&lt;/p&gt;


&lt;p&gt;Please let me know if there&apos;s anything I can do to help debug.&lt;/p&gt;</description>
                <environment></environment>
        <key id="58429">SERVER-7854</key>
            <summary>Potential bug in rollbacks when running with auth</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="9">Done</resolution>
                                        <assignee username="kristina">Kristina Chodorow</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                    </labels>
                <created>Thu, 6 Dec 2012 00:00:59 +0000</created>
                <updated>Mon, 11 Jul 2016 17:59:13 +0000</updated>
                            <resolved>Thu, 3 Jan 2013 20:48:48 +0000</resolved>
                                    <version>2.3.1</version>
                                                    <component>Replication</component>
                    <component>Security</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="230280" author="spencer" created="Thu, 3 Jan 2013 20:48:48 +0000"  >&lt;p&gt;Works for me.&lt;/p&gt;</comment>
                            <comment id="230255" author="kristina" created="Thu, 3 Jan 2013 20:06:57 +0000"  >&lt;p&gt;These failures should be fixed by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7759&quot; title=&quot;Don&amp;#39;t purge bgbuffer after SECONDARY-&amp;gt;PRIMARY transition&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7759&quot;&gt;&lt;del&gt;SERVER-7759&lt;/del&gt;&lt;/a&gt;&apos;s fix and now pass for me. &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=spencer&quot; class=&quot;user-hover&quot; rel=&quot;spencer&quot;&gt;spencer&lt;/a&gt;, does it work for you?&lt;/p&gt;</comment>
                            <comment id="207601" author="spencer" created="Thu, 6 Dec 2012 00:07:42 +0000"  >&lt;p&gt;To run this test with auth, run:&lt;/p&gt;
&lt;p/&gt;
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&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;buildscripts/smoke.py --nojournal --auth jstests/replsets/rollback2.js&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;</comment>
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            <issuekey id="57457">SERVER-7759</issuekey>
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