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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-3159] Re-adding member in replica set fails</title>
                <link>https://jira.mongodb.org/browse/SERVER-3159</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Removing and re-adding a member of a replica set seems to work:&lt;/p&gt;

&lt;p&gt;&amp;gt; rs.remove(&quot;m2:27017&quot;)&lt;/p&gt;
{ &quot;ok&quot; : 1 }

&lt;p&gt;&amp;gt; rs.status();         &lt;br/&gt;
{&lt;br/&gt;
	&quot;set&quot; : &quot;wm1&quot;,&lt;br/&gt;
	&quot;date&quot; : &quot;Fri May 27 2011 13:56:52 GMT+0000 (UTC)&quot;,&lt;br/&gt;
	&quot;myState&quot; : 1,&lt;br/&gt;
	&quot;members&quot; : [&lt;br/&gt;
		&lt;/p&gt;
{
			&quot;_id&quot; : 1,
			&quot;name&quot; : &quot;web2:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 7,
			&quot;uptime&quot; : 2,
			&quot;lastHeartbeat&quot; : &quot;Fri May 27 2011 13:56:52 GMT+0000 (UTC)&quot;
		}
&lt;p&gt;,&lt;br/&gt;
		&lt;/p&gt;
{
			&quot;_id&quot; : 2,
			&quot;name&quot; : &quot;web3:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 7,
			&quot;uptime&quot; : 2,
			&quot;lastHeartbeat&quot; : &quot;Fri May 27 2011 13:56:52 GMT+0000 (UTC)&quot;
		}
&lt;p&gt;,&lt;br/&gt;
		&lt;/p&gt;
{
			&quot;_id&quot; : 3,
			&quot;name&quot; : &quot;m5:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 1,
			&quot;self&quot; : true
		}
&lt;p&gt;,&lt;/p&gt;
		{
			&quot;_id&quot; : 4,
			&quot;name&quot; : &quot;m3:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 2,
			&quot;uptime&quot; : 2,
			&quot;lastHeartbeat&quot; : &quot;Fri May 27 2011 13:56:52 GMT+0000 (UTC)&quot;
		}
&lt;p&gt;	],&lt;br/&gt;
	&quot;ok&quot; : 1&lt;br/&gt;
}&lt;/p&gt;

&lt;p&gt;&amp;gt; rs.add(&quot;m2:27017&quot;)   &lt;/p&gt;
{ &quot;ok&quot; : 1 }

&lt;p&gt;&amp;gt; rs.status();      &lt;br/&gt;
{&lt;br/&gt;
	&quot;set&quot; : &quot;wm1&quot;,&lt;br/&gt;
	&quot;date&quot; : &quot;Fri May 27 2011 13:57:01 GMT+0000 (UTC)&quot;,&lt;br/&gt;
	&quot;myState&quot; : 1,&lt;br/&gt;
	&quot;members&quot; : [&lt;br/&gt;
		&lt;/p&gt;
{
			&quot;_id&quot; : 1,
			&quot;name&quot; : &quot;web2:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 7,
			&quot;uptime&quot; : 11,
			&quot;lastHeartbeat&quot; : &quot;Fri May 27 2011 13:57:00 GMT+0000 (UTC)&quot;
		}
&lt;p&gt;,&lt;br/&gt;
		&lt;/p&gt;
{
			&quot;_id&quot; : 2,
			&quot;name&quot; : &quot;web3:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 7,
			&quot;uptime&quot; : 11,
			&quot;lastHeartbeat&quot; : &quot;Fri May 27 2011 13:57:00 GMT+0000 (UTC)&quot;
		}
&lt;p&gt;,&lt;br/&gt;
		&lt;/p&gt;
{
			&quot;_id&quot; : 3,
			&quot;name&quot; : &quot;m5:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 1,
			&quot;self&quot; : true
		}
&lt;p&gt;,&lt;br/&gt;
		{&lt;br/&gt;
			&quot;_id&quot; : 4,&lt;br/&gt;
			&quot;name&quot; : &quot;m3:27017&quot;,&lt;br/&gt;
			&quot;health&quot; : 1,&lt;br/&gt;
			&quot;state&quot; : 2,&lt;br/&gt;
			&quot;uptime&quot; : 11,&lt;br/&gt;
			&quot;lastHeartbeat&quot; : &quot;Fri May 27 2011 13:57:00 GMT+0000 (UTC)&quot;,&lt;br/&gt;
			&quot;errmsg&quot; : &quot;syncThread: 13106 nextSafe(): &lt;/p&gt;
{ $err: \&quot;cursor dropped during query\&quot;, code: 13338 }
&lt;p&gt;&quot;&lt;br/&gt;
		},&lt;/p&gt;
		{
			&quot;_id&quot; : 5,
			&quot;name&quot; : &quot;m2:27017&quot;,
			&quot;health&quot; : 1,
			&quot;state&quot; : 4,
			&quot;uptime&quot; : 2,
			&quot;lastHeartbeat&quot; : &quot;Fri May 27 2011 13:56:59 GMT+0000 (UTC)&quot;
		}
&lt;p&gt;	],&lt;br/&gt;
	&quot;ok&quot; : 1&lt;br/&gt;
}&lt;/p&gt;

&lt;p&gt;But the logs on the re-added node show this repeating message:&lt;/p&gt;

&lt;p&gt;Fri May 27 14:03:14 &lt;span class=&quot;error&quot;&gt;&amp;#91;rs Manager&amp;#93;&lt;/span&gt; replSet error unexpected exception in haveNewConfig() : 0 assertion db/repl/rs.cpp:315&lt;br/&gt;
Fri May 27 14:03:14 &lt;span class=&quot;error&quot;&gt;&amp;#91;rs Manager&amp;#93;&lt;/span&gt; replSet error fatal, stopping replication&lt;br/&gt;
Fri May 27 14:03:15 &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; connection accepted from 10.254.238.86:57200 #107&lt;br/&gt;
Fri May 27 14:03:16 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn107&amp;#93;&lt;/span&gt; end connection 10.254.238.86:57200&lt;br/&gt;
Fri May 27 14:03:16 &lt;span class=&quot;error&quot;&gt;&amp;#91;rs Manager&amp;#93;&lt;/span&gt; replset msgReceivedNewConfig version: version: 7&lt;br/&gt;
Fri May 27 14:03:17 &lt;span class=&quot;error&quot;&gt;&amp;#91;rs Manager&amp;#93;&lt;/span&gt; replSet info saving a newer config version to local.system.replset&lt;br/&gt;
Fri May 27 14:03:23 &lt;span class=&quot;error&quot;&gt;&amp;#91;rs Manager&amp;#93;&lt;/span&gt; replSet 0 5&lt;br/&gt;
Fri May 27 14:03:23 &lt;span class=&quot;error&quot;&gt;&amp;#91;rs Manager&amp;#93;&lt;/span&gt;   Assertion failure false db/repl/rs.cpp 315&lt;br/&gt;
0x534a81 0x54163f 0x66a6aa 0x66e97e 0x66f5a6 0x695073 0x549473 0x547821 0x546f83 0x52b028 0x83a4b0 0x7f097a4939ca 0x7f0979a4270d &lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo12sayDbContextEPKc+0xb1) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x534a81&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo8assertedEPKcS1_j+0x10f) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x54163f&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo11ReplSetImpl14initFromConfigERNS_13ReplSetConfigEb+0x17a) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x66a6aa&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo7ReplSet13haveNewConfigERNS_13ReplSetConfigEb+0xfe) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x66e97e&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo7Manager20msgReceivedNewConfigENS_7BSONObjE+0x256) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x66f5a6&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5boost6detail8function26void_function_obj_invoker0INS_3_bi6bind_tIvNS_4_mfi3mf1IvN5mongo7ManagerENS7_7BSONObjEEENS3_5list2INS3_5valueIPS8_EENSC_IS9_EEEEEEvE6invokeERNS1_15function_bufferE+0x63) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x695073&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZNK5boost9function0IvEclEv+0x243) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x549473&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo4task6Server6doWorkEv+0x141) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x547821&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo4task4Task3runEv+0x33) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x546f83&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(_ZN5mongo13BackgroundJob3thrEv+0x88) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x52b028&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /usr/bin/mongod(thread_proxy+0x80) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x83a4b0&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /lib/libpthread.so.0(+0x69ca) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x7f097a4939ca&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /lib/libc.so.6(clone+0x6d) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x7f0979a4270d&amp;#93;&lt;/span&gt;&lt;/p&gt;</description>
                <environment>Replica Set on Ubuntu 10.4 LTS on Amazon EC2</environment>
        <key id="17602">SERVER-3159</key>
            <summary>Re-adding member in replica set fails</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="skion">Pieter Ennes</reporter>
                        <labels>
                    </labels>
                <created>Fri, 27 May 2011 15:09:25 +0000</created>
                <updated>Tue, 12 Jul 2016 00:19:09 +0000</updated>
                            <resolved>Thu, 2 Jun 2011 14:35:41 +0000</resolved>
                                    <version>1.6.5</version>
                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="35716" author="kristina" created="Thu, 2 Jun 2011 14:35:41 +0000"  >&lt;p&gt;Good idea, I&apos;ve added a section in &lt;a href=&quot;http://www.mongodb.org/display/DOCS/Adding+a+New+Set+Member&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.mongodb.org/display/DOCS/Adding+a+New+Set+Member&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="35695" author="skion" created="Thu, 2 Jun 2011 08:47:32 +0000"  >&lt;p&gt;Ah, that&apos;s a good tip, maybe this is worth a note in the Wiki somewhere? (or I overlooked it there)&lt;/p&gt;

&lt;p&gt;We managed to add back the node after upgrading the cluster form 1.6.5 to 1.8.1. Seems the situation has changed a little in that release, for the better!&lt;/p&gt;

&lt;p&gt;This can be closed I think, thanks.&lt;/p&gt;</comment>
                            <comment id="35615" author="kristina" created="Wed, 1 Jun 2011 19:12:07 +0000"  >&lt;p&gt;Perfect, I see what happened.&lt;/p&gt;

&lt;p&gt;Each member of the set has an _id (0, 1, 2, etc.).  The error you&apos;re getting is that the _id of the member you&apos;re adding has changed.  It looks like you removed the member with _id : 0 and then tried to re-add it with _id : 5.  This is where the command line helper&apos;s abstraction breaks down: you have to make sure that if you removed a replica set member with a certain _id, you add it back with the same _id.  So, instead of rs.add(&quot;m2:27017&quot;), you&apos;d have to do:&lt;/p&gt;

&lt;p&gt;rs.add({_id : 0, host : &quot;m2:27017&quot;})&lt;/p&gt;

&lt;p&gt;Then you should be able to call remove/add back and forth.&lt;/p&gt;</comment>
                            <comment id="35081" author="skion" created="Sun, 29 May 2011 19:34:06 +0000"  >&lt;p&gt;Kristina, please find it attached. &lt;/p&gt;

&lt;p&gt;This may be relevant too: Please note the change of server version between the first run (1.6.5, starting at Fri May 27 13:54:15 in the log) and the  second run (1.8.1, starting at Fri May 27 14:11:33), which we did in an attempt to bypass the error.&lt;/p&gt;</comment>
                            <comment id="34869" author="kristina" created="Fri, 27 May 2011 17:36:25 +0000"  >&lt;p&gt;It&apos;s very doubtful &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2981&quot; title=&quot;Allow reconfig with a minority down&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2981&quot;&gt;&lt;del&gt;SERVER-2981&lt;/del&gt;&lt;/a&gt; will be backported, we try to only backport critical bug fixes.&lt;/p&gt;</comment>
                            <comment id="34868" author="kristina" created="Fri, 27 May 2011 17:35:27 +0000"  >&lt;p&gt;What version are you running and can you paste a bigger chunk of the logs?&lt;/p&gt;</comment>
                            <comment id="34831" author="skion" created="Fri, 27 May 2011 15:28:26 +0000"  >&lt;p&gt;Forgot to note that the re-added node was started with a clean data directory before issuing the rs.remove/add() sequence on the primary.&lt;/p&gt;</comment>
                            <comment id="34828" author="skion" created="Fri, 27 May 2011 15:15:45 +0000"  >&lt;p&gt;Doing the same thing again leads to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2981:&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-2981:&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&amp;gt; rs.remove(&quot;m2:27017&quot;)&lt;/p&gt;
{ &quot;ok&quot; : 1 }

&lt;p&gt;&amp;gt; rs.add(&quot;m2:27017&quot;)&lt;br/&gt;
{&lt;br/&gt;
	&quot;assertion&quot; : &quot;need most members up to reconfigure, not ok : m2:27017&quot;,&lt;br/&gt;
	&quot;assertionCode&quot; : 13144,&lt;br/&gt;
	&quot;errmsg&quot; : &quot;db assertion failure&quot;,&lt;br/&gt;
	&quot;ok&quot; : 0&lt;br/&gt;
}&lt;/p&gt;

&lt;p&gt;What happened in the first place?&lt;br/&gt;
Should this action not be idempotent?&lt;br/&gt;
Any chance &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2981&quot; title=&quot;Allow reconfig with a minority down&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2981&quot;&gt;&lt;del&gt;SERVER-2981&lt;/del&gt;&lt;/a&gt; will be back-ported to the stable branch?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="25251">SERVER-4344</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="11962" name="mongodb-3159.log.gz" size="20816" author="skion" created="Sun, 29 May 2011 19:34:06 +0000"/>
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