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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-11039] During Upgrade of Mongos from 2.2 to 2.4, process does not come out.</title>
                <link>https://jira.mongodb.org/browse/SERVER-11039</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Hi Team,&lt;br/&gt;
When we upgrade mongos from 2.2 to 2.4. The process running with --upgrade does not completes, it keep runnign for ever and we have kill or teminate it and then start it again without --upgrade option.&lt;/p&gt;

&lt;p&gt;While in case of upgrade of mongod instance --upgrade process comes out of its own and once it comes out we start it again.&lt;/p&gt;

&lt;p&gt;Want to check if this is normal behaviour of Mongos or our mongos process is getting hanged. I have attached the mongos upgrade logs file. &lt;/p&gt;</description>
                <environment>Devlopement server</environment>
        <key id="92709">SERVER-11039</key>
            <summary>During Upgrade of Mongos from 2.2 to 2.4, process does not come out.</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="3">Duplicate</resolution>
                                        <assignee username="randolph@mongodb.com">Randolph Tan</assignee>
                                    <reporter username="rbhasin@metlife.com">Rajat Bhasin</reporter>
                        <labels>
                    </labels>
                <created>Fri, 4 Oct 2013 13:20:13 +0000</created>
                <updated>Wed, 10 Dec 2014 23:04:28 +0000</updated>
                            <resolved>Mon, 24 Mar 2014 17:23:57 +0000</resolved>
                                                                    <component>Admin</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="438924" author="rbhasin@metlife.com" created="Thu, 10 Oct 2013 15:32:57 +0000"  >&lt;p&gt;Thanks Randolph,&lt;br/&gt;
You can close the case now. Thanks for all your help and explanation.&lt;/p&gt;

&lt;p&gt;Regards&lt;br/&gt;
Rajat Bhasin&lt;br/&gt;
UDB Database Engineer &lt;br/&gt;
Office: 732 652 7252 | Cell: 732 322 5763 | Email: rbhasin@metlife.com&lt;/p&gt;

</comment>
                            <comment id="438918" author="renctan" created="Thu, 10 Oct 2013 15:24:52 +0000"  >&lt;p&gt;Yes. The log entry &quot;upgrade of config server to v4 successful&quot; means that the upgrade has completed.&lt;/p&gt;</comment>
                            <comment id="437460" author="rbhasin@metlife.com" created="Tue, 8 Oct 2013 17:50:52 +0000"  >&lt;p&gt;Hi Randolph,&lt;br/&gt;
If mongos process keep running with  --upgrade option, it will always be a confusion and does not seems to be good option to keep it running for always(months or year till new upgrade not done).&lt;/p&gt;

&lt;p&gt;Can your team confirm us some checks in mongos upgrade log file which shows mongos upgrade is completed and now we can kill that mongos process and start its normal process (i.e. without --upgrade) ?&lt;br/&gt;
And will this alternative approach be safe approach(considering we have a big production Mongo Env)?&lt;/p&gt;

&lt;p&gt;Regards&lt;br/&gt;
Rajat Bhasin&lt;br/&gt;
UDB Database Engineer &lt;br/&gt;
Office: 732 652 7252 | Cell: 732 322 5763 | Email: rbhasin@metlife.com&lt;/p&gt;
</comment>
                            <comment id="437448" author="renctan" created="Tue, 8 Oct 2013 17:36:19 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;The mongos process does not terminate after it finishes the upgrade. So that means you can start using it right away without having to start the mongos again. On the other hand, I know that the inconsistency in the behavior is confusing.&lt;/p&gt;

&lt;p&gt;Thanks!&lt;/p&gt;</comment>
                            <comment id="437145" author="rbhasin@metlife.com" created="Tue, 8 Oct 2013 13:16:43 +0000"  >&lt;p&gt;yes I have read the document provided. I did following:&lt;br/&gt;
1. I have first stoped the only mongos instance running on standalone box.&lt;br/&gt;
2. uninstall and installed the new binaries&lt;br/&gt;
3. Started the mongos process again with --upgrade option:&lt;br/&gt;
mongos --port 27017 --logpath /udb/udbll002/data/m_data/mongos/mongos.log --logappend --configdb lxrsvnsqlt01:27018  --keyFile /udb/udbll002/data/m_data/key_file/keyfile.conf --upgrade&lt;/p&gt;

&lt;p&gt;4. Above command keep running for indefinate time and does not comes out.&lt;/p&gt;</comment>
                            <comment id="437144" author="rbhasin@metlife.com" created="Tue, 8 Oct 2013 13:12:34 +0000"  >&lt;p&gt;I have uploaded my MONGOS LOG fiel generated during upgrade.&lt;/p&gt;</comment>
                            <comment id="436421" author="dan@10gen.com" created="Mon, 7 Oct 2013 02:34:58 +0000"  >&lt;p&gt;Can you post the log files for your mongos when you attempted the upgrade?  Have you read the upgrade instructions for a sharded cluster in the documentation before attempting the upgrade?&lt;br/&gt;
&lt;a href=&quot;http://docs.mongodb.org/manual/release-notes/2.4-upgrade/#upgrade-a-sharded-cluster-from-mongodb-2-2-to-mongodb-2-4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/release-notes/2.4-upgrade/#upgrade-a-sharded-cluster-from-mongodb-2-2-to-mongodb-2-4&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
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                                        <issuelink>
            <issuekey id="123070">SERVER-13294</issuekey>
        </issuelink>
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                <attachments>
                            <attachment id="32321" name="MONGOS_UPGRADE_LOG.txt" size="7533" author="rbhasin@metlife.com" created="Tue, 8 Oct 2013 13:12:34 +0000"/>
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