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From chandra kant <chandralakshmikan...@gmail.com>
Subject Re: Installing both hadoop1 and haddop2 on single node
Date Mon, 05 May 2014 15:42:11 GMT
I mean , I tried that already. In my .bash_profile , I set up
HADOOP_HOME, HADOOP_MAPRED_HOME, HADOOP_COMMON_HOME, HADOOP_HDFS_HOME,
HADOOP_YARN_HOME, HADOOP_CONF_DIR to point to hadoop2 directory. And
similarly  I have HADOOP_PREFIX and HADOOP_HOME for hadoop-1.
So , i comment out hadoop-2 specific conf lines in .bash_profile while
running hadoop-1 and vice-versa.
And here the problem comes, that when trying to run hadoop-2 , it asks to
format the  hadoop.tmp.dir set up by hadoop-1.

Just for context- I have done fair amount of work on hadoop-1 and this is
my first attempt at hadoop-2.

--
Chandra


On Mon, May 5, 2014 at 11:31 AM, chandra kant <
chandralakshmikant90@gmail.com> wrote:

> Thanks..
> I set it accordingly..
>
>
> On Monday, 5 May 2014, Shengjun Xin <sxin@gopivotal.com> wrote:
>
>> 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 <
>> chandralakshmikant90@gmail.com> 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
>>
>

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