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From Stanley Shi <s...@gopivotal.com>
Subject Re: How to upgrade Hadoop 2.2 to 2.4
Date Tue, 24 Jun 2014 06:04:19 GMT
Cluster-running upgrade is only supported after 2.4, that is, upgrade from
2.4 to 2.4+ is supported; upgrading from 2.2 to 2.4 is not supported;

Regards,
*Stanley Shi,*



On Fri, Jun 20, 2014 at 5:50 PM, Jason Meng <neumqp@126.com> wrote:

> Hi,
>
> I setup Hadoop 2.2 cluster with NameNode HA. How to upgrade it to 2.4? I
> try to upgrade according to
> http://hadoop.apache.org/docs/r2.4.0/hadoop-project-dist/hadoop-hdfs/HdfsRollingUpgrade.html,
> but can't works. Is there a detailed step by step guide include when to
> shutdown namenode or when to change env variable like HADOOP_HOME in which
> step? There are two mode to upgrade, cluster running or cluster stopped.
> Either one is ok. Thanks.
>
> Regards,
> Jason
>
>
>

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