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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-16323] Server does not recover after a rollback (mms-onprem)</title>
                <link>https://jira.mongodb.org/browse/SERVER-16323</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Upon initiating a rollback, the rollback operation appears to be stuck and never makes forward progress after ~2+ hours.&lt;/p&gt;

&lt;p&gt;A server restart tries to restart the rollback with the same result (mongod remains up and accepts connections, but otherwise cannot finish the rollback).&lt;/p&gt;

&lt;p&gt;GDB thread dump and (trimmed) mongod log attached.&lt;/p&gt;</description>
                <environment>CentOS</environment>
        <key id="171289">SERVER-16323</key>
            <summary>Server does not recover after a rollback (mms-onprem)</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="4">Incomplete</resolution>
                                        <assignee username="milkie@mongodb.com">Eric Milkie</assignee>
                                    <reporter username="john.morales@mongodb.com">John Morales</reporter>
                        <labels>
                    </labels>
                <created>Tue, 25 Nov 2014 21:31:46 +0000</created>
                <updated>Thu, 8 Jan 2015 13:54:32 +0000</updated>
                            <resolved>Thu, 8 Jan 2015 13:54:32 +0000</resolved>
                                    <version>2.8.0-rc1</version>
                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="800023" author="milkie" created="Thu, 8 Jan 2015 13:54:32 +0000"  >&lt;p&gt;Hung waiting for a response from a remote node &amp;#8211; more info to be collected if it happens again.&lt;/p&gt;</comment>
                            <comment id="772831" author="milkie" created="Tue, 25 Nov 2014 22:03:00 +0000"  >&lt;p&gt;According to the log, it attempted to roll back twice.  The first attempt failed because it detected that there was too much data to roll back.  It can only discover this after fetching ops from the sync source.&lt;br/&gt;
After this failure occurs, the code tries to roll back again.  This time, while fetching ops, the query hung waiting for a response from the sync source.  Curiously, the recv call was also interrupted with EINTR, which is a pretty rare occurrence.  However, I don&apos;t think it&apos;s related to the problem.&lt;/p&gt;

&lt;p&gt;It would be helpful if we could look at the sync source onprem-1.vpc1.10gen.cc:27017 and see if we can find the rollback operation still in progress.  It would look like a simple findOne of a recently written op, with a source of onprem-2.vpc1.10gen.cc.&lt;/p&gt;</comment>
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                            <attachment id="58038" name="gdb.threads.log" size="49045" author="john.morales@mongodb.com" created="Tue, 25 Nov 2014 21:31:46 +0000"/>
                            <attachment id="58037" name="mongod.log" size="533535" author="john.morales@mongodb.com" created="Tue, 25 Nov 2014 21:31:46 +0000"/>
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