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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-21988] Rollback does not wait for applier to finish before starting</title>
                <link>https://jira.mongodb.org/browse/SERVER-21988</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This error message is a bit mislead as well. The error is due to trying to re-apply the last/current oplog entry again.&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;
&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;[rsSync] Fatal assertion 34361 OplogOutOfOrder Attempted to apply an earlier oplog entry (ts: Dec 18 01:16:07:1) when our lastWrittenOptime was (term: 2, timestamp: Dec 18 01:16:07:1)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;After looking a bit more into this, I have found this sequence which caused the problem:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Chained replication&lt;/li&gt;
	&lt;li&gt;Failover with rollback&lt;/li&gt;
	&lt;li&gt;Chained replica starts rollback while still apply with buffered oplog entries&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Under these conditions it is race where this error occurs when the rollback happens during/before all the buffered oplog entries are applied.&lt;/p&gt;</description>
                <environment></environment>
        <key id="244831">SERVER-21988</key>
            <summary>Rollback does not wait for applier to finish before starting</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="scotthernandez">Scott Hernandez</assignee>
                                    <reporter username="scotthernandez">Scott Hernandez</reporter>
                        <labels>
                            <label>code-and-test</label>
                    </labels>
                <created>Tue, 22 Dec 2015 13:58:30 +0000</created>
                <updated>Mon, 15 Nov 2021 15:11:41 +0000</updated>
                            <resolved>Fri, 8 Jan 2016 13:18:01 +0000</resolved>
                                    <version>3.2.1</version>
                                    <fixVersion>3.2.3</fixVersion>
                    <fixVersion>3.3.0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1368595" author="ramon.fernandez" created="Fri, 26 Aug 2016 03:08:24 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=zyd_com&quot; class=&quot;user-hover&quot; rel=&quot;zyd_com&quot;&gt;zyd_com&lt;/a&gt;, I&apos;m wondering whether your&apos;re seeing the same symptom triggered by a different bug. Will you please open a new ticket and provide full logs for the affected node?&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                            <comment id="1367608" author="zyd_com@126.com" created="Thu, 25 Aug 2016 12:09:39 +0000"  >&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;
&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;
		&lt;tbody &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-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;2016-08-24T19:02:44.644+0800 I -        [rsSync] Fatal assertion 34361 OplogOutOfOrder: Attempted to apply an earlier oplog entry (ts: Aug 24 19:02:29:1) when our lastWrittenOptime was (term: -1, timestamp: Aug 24 19:02:29:4d)&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;   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;2016-08-24T19:02:44.647+0800 I CONTROL  [rsSync]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;I encounter this problem when using mongodb-3.2.3&#65292;I am not sure if it&apos;s the same question&#65311; I want to know the detailed case for this problem&#65292;anybody can help me &#65311;&lt;/p&gt;

</comment>
                            <comment id="1147360" author="xgen-internal-githook" created="Tue, 19 Jan 2016 16:05:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;scotthernandez&apos;, u&apos;name&apos;: u&apos;Scott Hernandez&apos;, u&apos;email&apos;: u&apos;scotthernandez@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21988&quot; title=&quot;Rollback does not wait for applier to finish before starting&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21988&quot;&gt;&lt;del&gt;SERVER-21988&lt;/del&gt;&lt;/a&gt;: wait for applier before starting rollback&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 4846585c6a7f09a18ac8c313ca7b0cee405ad29c)&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/05a115fe4e87db76c16fab5d17e23ac45329994d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/05a115fe4e87db76c16fab5d17e23ac45329994d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1129562" author="xgen-internal-githook" created="Fri, 8 Jan 2016 13:16:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;scotthernandez&apos;, u&apos;name&apos;: u&apos;Scott Hernandez&apos;, u&apos;email&apos;: u&apos;scotthernandez@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21988&quot; title=&quot;Rollback does not wait for applier to finish before starting&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21988&quot;&gt;&lt;del&gt;SERVER-21988&lt;/del&gt;&lt;/a&gt;: wait for applier before starting rollback&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4846585c6a7f09a18ac8c313ca7b0cee405ad29c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4846585c6a7f09a18ac8c313ca7b0cee405ad29c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1126644" author="xgen-internal-githook" created="Tue, 5 Jan 2016 18:37:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;scotthernandez&apos;, u&apos;name&apos;: u&apos;Scott Hernandez&apos;, u&apos;email&apos;: u&apos;scotthernandez@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21988&quot; title=&quot;Rollback does not wait for applier to finish before starting&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21988&quot;&gt;&lt;del&gt;SERVER-21988&lt;/del&gt;&lt;/a&gt;: change outoforder error message logging.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/aa4c76484f21515383197e3380060abac45b7b9c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/aa4c76484f21515383197e3380060abac45b7b9c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1121018" author="xgen-internal-githook" created="Tue, 22 Dec 2015 23:12:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;scotthernandez&apos;, u&apos;name&apos;: u&apos;Scott Hernandez&apos;, u&apos;email&apos;: u&apos;scotthernandez@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21988&quot; title=&quot;Rollback does not wait for applier to finish before starting&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21988&quot;&gt;&lt;del&gt;SERVER-21988&lt;/del&gt;&lt;/a&gt;: do not fassert when re-applying same oplog entry till we fix the buffering issue&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3905aa7b425fee814d67dd9ea8fb1ec13f3ecd2f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3905aa7b425fee814d67dd9ea8fb1ec13f3ecd2f&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="230307">SERVER-20466</issuekey>
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            <issuekey id="244758">SERVER-21979</issuekey>
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            <issuelink>
            <issuekey id="263278">SERVER-22482</issuekey>
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            <issuelink>
            <issuekey id="277439">SERVER-23525</issuekey>
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