I think you need to set two different environment variables for hadoop1 and hadoop2, such as HADOOP_HOME, HADOOP_CONF_DIR and before you run hadoop command, you need to make sure the correct environment variables are enable.
On Mon, May 5, 2014 at 12:36 PM, chandra kant < [email protected]> wrote: > > Hi, > Is it possible to install both hadoop1 and hadoop2 side by side on single > node for development purpose so that I can choose any one of them by just > shutting down one and starting another? > I installed hadoop 1.2.1 and ran air successfully. > Next, when I try to do "hdfs namenode - format " from hadoop2.2.0 , it > tries to format the hadoop.tmp.dir set up by hadoop1.2.1 , which is clearly > not desirable. I set up "dfs.namenode.name.dir" and "dfs.datanode.data.dir" > in "hdfs-site.xml" to different > locations. > But again the same problem... > Any suggestions.... > > -- > Chandra > > -- Regards Shengjun
