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From Stanley Shi <s...@gopivotal.com>
Subject Re: Installing both hadoop1 and haddop2 on single node
Date Tue, 06 May 2014 03:45:31 GMT
Please be sure to use different HADOOP_CONF_DIR for the two version; and
also in the configuration, be sure to use different folder to store the
HDFS related files;

Regards,
*Stanley Shi,*



On Tue, May 6, 2014 at 8:41 AM, Shengjun Xin <sxin@gopivotal.com> wrote:

> According to your description, I think it is still a configuration
> problem. Before you run hadoop command, did you check the hadoop version
> and hadoop environment variables ? Are they what you want?
>
>
> On Mon, May 5, 2014 at 11:42 PM, chandra kant <
> chandralakshmikant90@gmail.com> wrote:
>
>> 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
>>>>
>>>
>>
>
>
> --
> Regards
> Shengjun
>

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