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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-2975] Replica set master failure detection</title>
                <link>https://jira.mongodb.org/browse/SERVER-2975</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;During the massive EC2 fail earlier this morning, the master of one of our replica set was impacted, not responding to the clients still connected without closing the connections. The other members of the set did not pick the failure up, and it was not possible to send a &quot;stepdown&quot; command to it. (As the computer was not answering ssh, we did a remote reboot to force the replica set on its two other feet).&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;the replica failure detection should be less optimistic&lt;/li&gt;
	&lt;li&gt;It should be possible to trigger election from a secondary in such a situation&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment>linux, ec2, ebs</environment>
        <key id="16226">SERVER-2975</key>
            <summary>Replica set master failure detection</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="kristina">Kristina Chodorow</assignee>
                                    <reporter username="kali">Mathieu Poumeyrol</reporter>
                        <labels>
                    </labels>
                <created>Thu, 21 Apr 2011 11:48:13 +0000</created>
                <updated>Tue, 29 May 2012 14:53:16 +0000</updated>
                            <resolved>Mon, 2 May 2011 16:02:41 +0000</resolved>
                                    <version>1.8.1</version>
                                                    <component>Replication</component>
                                        <votes>2</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="30629" author="kristina" created="Mon, 2 May 2011 16:39:45 +0000"  >&lt;p&gt;Both, mongos and mongod use the code that was fixed.&lt;/p&gt;</comment>
                            <comment id="30625" author="jwollman" created="Mon, 2 May 2011 16:10:19 +0000"  >&lt;p&gt;Was this fixed in MongoS or in the server?  &lt;/p&gt;</comment>
                            <comment id="30624" author="kristina" created="Mon, 2 May 2011 16:02:31 +0000"  >&lt;p&gt;Fixed and backported to 1.8.2.  &lt;/p&gt;</comment>
                            <comment id="30051" author="kali" created="Thu, 28 Apr 2011 07:20:46 +0000"  >&lt;p&gt;+1 for a backport to 1.8 &#8212; that is, if that&apos;s possible. 1.8 is just a few weeks old, 2.0 seams awfully away for something with such concrete availability impact.&lt;/p&gt;</comment>
                            <comment id="29993" author="jwollman" created="Thu, 28 Apr 2011 00:26:37 +0000"  >&lt;p&gt;Are guys considering this as patch to 1.8 release?&lt;/p&gt;

&lt;p&gt;Thx&lt;/p&gt;

&lt;p&gt;Sent from my iPhone&lt;/p&gt;



</comment>
                            <comment id="29966" author="kristina" created="Wed, 27 Apr 2011 22:27:45 +0000"  >&lt;p&gt;That&apos;s fine, I&apos;ve figured out what the bug was and I&apos;ll be committing the fix once 1.9.0 is out.&lt;/p&gt;</comment>
                            <comment id="29640" author="kali" created="Tue, 26 Apr 2011 07:43:01 +0000"  >&lt;p&gt;No luck in rescuing logs from the failing master. They were rotated away before AWS could restore our access to the computer.&lt;/p&gt;</comment>
                            <comment id="29421" author="kali" created="Thu, 21 Apr 2011 13:38:14 +0000"  >&lt;p&gt;Sure, but I prefer not to share my ip addresses and stuff with everyone. I&apos;m &quot;kali&quot; on freenode, I already /msged a link to kchodorow_ .&lt;/p&gt;</comment>
                            <comment id="29420" author="eliot" created="Thu, 21 Apr 2011 13:13:06 +0000"  >&lt;p&gt;Can you send the logs from one of the secondaries?&lt;/p&gt;</comment>
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