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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-38101] Secondary Crashing with &quot;aborting after fassert() failure&quot; error</title>
                <link>https://jira.mongodb.org/browse/SERVER-38101</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I upgraded this test mongodb replica set from 3.4.x to 3.6.7&#160; about 2 weeks back.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;Today, i experienced a secondary mongod crashing with the following errors:&lt;/p&gt;

&lt;p&gt;Secondary Crashing with &quot;aborting after fassert() failure&quot; error&lt;/p&gt;

&lt;p&gt;Mongod Log extracts:&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;2018-11-12T17:16:13.664-0800 I NETWORK &lt;span class=&quot;error&quot;&gt;&amp;#91;thread28&amp;#93;&lt;/span&gt; Successfully connected to 10.10.190.6:27017 (49250 connections now open to xxx with a 0 second timeout)&lt;br/&gt;
2018-11-12T17:16:13.664-0800 I NETWORK &lt;span class=&quot;error&quot;&gt;&amp;#91;thread28&amp;#93;&lt;/span&gt; scoped connection to xxxx not being returned to the pool&lt;br/&gt;
2018-11-12T17:16:41.838-0800 I NETWORK &lt;span class=&quot;error&quot;&gt;&amp;#91;listener&amp;#93;&lt;/span&gt; connection accepted from xxx #49461 (15 connections now open)&lt;br/&gt;
2018-11-12T17:16:41.939-0800 I NETWORK &lt;span class=&quot;error&quot;&gt;&amp;#91;conn49461&amp;#93;&lt;/span&gt; received client metadata from xxxx:42908 conn49461: { driver: &lt;/p&gt;
{ name: &quot;mongo-csharp-driver&quot;, version: &quot;2.7.0.0&quot; }
&lt;p&gt;, os: { type: &quot;Linux&quot;, name: &quot;Linux 4.2.0-42-generic #49~14.04.1-Ubuntu SMP Wed Jun 29 20:22:11 UTC 2016&quot;, architecture: &quot;x86_64&quot;, version: &quot;4.2.0-42-generic&quot; }, platform: &quot;.NET Core 4.6.26328.01&quot; }&lt;br/&gt;
2018-11-12T17:17:09.062-0800 F REPL &lt;span class=&quot;error&quot;&gt;&amp;#91;repl writer worker 13&amp;#93;&lt;/span&gt; writer worker caught exception: NamespaceNotFound: Failed to apply operation due to missing collection (6e46dffd-9a3c-496c-81b9-3a7cfa4f1ac6): { ts: Timestamp(1542071829, 1), t: 27, h: -7111336552031876369, v: 2, op: &quot;i&quot;, ns: &quot;config.system.sessions&quot;, ui: UUID(&quot;6e46dffd-9a3c-496c-81b9-3a7cfa4f1ac6&quot;), wall: new Date(1542071829042), o: { _id: &lt;/p&gt;
{ id: UUID(&quot;85cc8499-8b2c-4b4f-a871-5b4fc8358968&quot;), uid: BinData(0, E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855) }
&lt;p&gt;, lastUse: new Date(1542071829043) } } on: { ts: Timestamp(1542071829, 1), t: 27, h: -7111336552031876369, v: 2, op: &quot;i&quot;, ns: &quot;config.system.sessions&quot;, ui: UUID(&quot;6e46dffd-9a3c-496c-81b9-3a7cfa4f1ac6&quot;), wall: new Date(1542071829042), o: { _id: &lt;/p&gt;
{ id: UUID(&quot;85cc8499-8b2c-4b4f-a871-5b4fc8358968&quot;), uid: BinData(0, E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855) }
&lt;p&gt;, lastUse: new Date(1542071829043) } }&lt;br/&gt;
2018-11-12T17:17:09.062-0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;repl writer worker 13&amp;#93;&lt;/span&gt; Fatal assertion 16359 NamespaceNotFound: Failed to apply operation due to missing collection (6e46dffd-9a3c-496c-81b9-3a7cfa4f1ac6): { ts: Timestamp(1542071829, 1), t: 27, h: -7111336552031876369, v: 2, op: &quot;i&quot;, ns: &quot;config.system.sessions&quot;, ui: UUID(&quot;6e46dffd-9a3c-496c-81b9-3a7cfa4f1ac6&quot;), wall: new Date(1542071829042), o: { _id: &lt;/p&gt;
{ id: UUID(&quot;85cc8499-8b2c-4b4f-a871-5b4fc8358968&quot;), uid: BinData(0, E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855) }
&lt;p&gt;, lastUse: new Date(1542071829043) } } at src/mongo/db/repl/sync_tail.cpp 1209&lt;br/&gt;
2018-11-12T17:17:09.062-0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;repl writer worker 13&amp;#93;&lt;/span&gt;&lt;/p&gt;

&lt;p&gt;***aborting after fassert() failure&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;I tried to restart and am getting the same error with the mongod crashing.&lt;/p&gt;

&lt;p&gt;Also, after the upgrade, i did modify the&#160;featureCompatibilityVersion to 3.6&lt;/p&gt;

{ &quot;_id&quot; : &quot;featureCompatibilityVersion&quot;, &quot;version&quot; : &quot;3.6&quot; }</description>
                <environment></environment>
        <key id="632793">SERVER-38101</key>
            <summary>Secondary Crashing with &quot;aborting after fassert() failure&quot; error</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="3">Duplicate</resolution>
                                        <assignee username="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="sreek95051@yahoo.com">Sree Himakunthala</reporter>
                        <labels>
                    </labels>
                <created>Tue, 13 Nov 2018 02:05:44 +0000</created>
                <updated>Tue, 16 Nov 2021 15:15:51 +0000</updated>
                            <resolved>Tue, 13 Nov 2018 03:16:52 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="2059635" author="thomas.schubert" created="Tue, 13 Nov 2018 03:16:17 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=sreek95051&quot; class=&quot;user-hover&quot; rel=&quot;sreek95051&quot;&gt;sreek95051&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for your report. Would you please upgrade to latest version of MongoDB 3.6 to take advantage of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36332&quot; title=&quot;CursorNotFound error in GetMore on a secondary with sessions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36332&quot;&gt;&lt;del&gt;SERVER-36332&lt;/del&gt;&lt;/a&gt;? This work significantly improves how the &lt;tt&gt;config.system.sessions&lt;/tt&gt; collection behaves on replicated nodes. If the issue persists after upgrading, I would suggest performing an initial sync to guarantee that the secondary is back in a consistent state. Please let us know if you encounter any similar issues after performing these steps.&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
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