Alternatively just configure each installation to use different directories for NameNode and DataNode data so that formatting one does not mess up the other. Chris On Dec 12, 2013 6:51 AM, "pengwenwu2008" <[email protected]> wrote:
> In this case,you need to handle the HDFS version issue when you switch > from A to B or B to A. > > Regards, > Wenwu > > > At 2013-12-12 19:42:27,"Geelong Yao" <[email protected]> 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 <[email protected]> > >> 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. >> Chris >> >> >> 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? >> >> >> BRs >> Geelong >> >> -- >> From Good To Great >> >> >> > > > -- > From Good To Great > > > >
