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From pengwenwu2008 <pengwenwu2...@163.com>
Subject Re:Re: Would it be possible to install two version of Hadoop on the same cluster?
Date Thu, 12 Dec 2013 11:51:05 GMT
In this case,you need to handle the HDFS version issue when you switch from A to B or B to

At 2013-12-12 19:42:27,"Geelong Yao" <geelongyao@gmail.com> wrote:

Hi Chris

You are correct.
When I am testing the performance of version A, I would shut-down the version B
But I do not know whether I could install two version of hadoop at the same cluster

2013/12/12 Chris Mawata <chris.mawata@gmail.com>

If you are planning to take measurements when both are running they won't be representative
of either one. For instance, your network could look like a bottleneck when both are running
even if it could handle each one on its own. Datanodes that would have had capacity allowing
local processing might not have capacity because they are servicing the other cluster etc.
I would test them one at a time.

On 12/11/2013 6:49 AM, Geelong Yao wrote:

Hi Everyone

Would it be possible to install two version of Hadoop on the same cluster?and running at the
same time?
I have installed CDH4 on my cluster,but for the test requirements we need hadoop v0.20.2 at
the same time

Is there any solution for my situation?


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