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From Konstantin Shvachko <...@yahoo-inc.com>
Subject Re: Preparing for an upgrade - 0.16.0 to 0.17.1
Date Tue, 12 Aug 2008 17:28:51 GMT
It looks like we need to upgrade our upgrade procedure documentation.
Manual upgrade steps were necessary when we did not have the -upgrade
option to start the servers.
Now the "simplified procedure" is relevant of course.
Same as "Brief Upgrade Procedure" in Hadoop 0.14 Upgrade.


prasana.iyengar wrote:
>> Its not in the middle of upgrade.
>>> Q2: Do i have to finalizeUpgrade before upgrading the package?  
>> yes. note that you don't need to restart cluster to finalize.
> thanks for the clarification.
>> [there was
>> once an attempt to go to 0.16.1 - could this be a remnant of that ?]
>> most yes if NameNode shows that is it running 0.16.1 right now. Other 
> wise it would be the last successful upgrade.
> namenode package is 0.16.0 - so no upgrade since the initial installation
> for that version.
>>> thanks for pointers and directions on doing this right.
>> Please see the "Upgrade wiki" on hadoop site for more info.
> Ref: http://wiki.apache.org/hadoop/Hadoop%20Upgrade
> I ran the fsck and the hdfs shows a status of HEALTHY; so I am going to try
> to follow the "simplified upgrade process"
> in summary:
> stop-all.sh ; upgrade ; start-all.sh -upgrade
> thanks,
> -prasana

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