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From Kumar Jayapal <kjayapa...@gmail.com>
Subject Re: Hadoop 2.6 issue
Date Thu, 02 Apr 2015 02:18:39 GMT
$which java

make sure the paths are valid for your installation (change if using 32bit
version):

/usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java
/usr/lib/jvm/java-6-openjdk-amd64/bin/javac

Setup update-alternatives:

sudo update-alternatives --install "/usr/bin/java" "java"
"/usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac"
"/usr/lib/jvm/java-6-openjdk-amd64/bin/javac" 1

sudo update-alternatives --set java
/usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java
sudo update-alternatives --set javac /usr/lib/jvm/java-6-openjdk-amd64/bin/javac

Alternatively, make sure the correct version is checked for both Java and
compiler:

sudo update-alternatives --config java
sudo update-alternatives --config javac

List the installed Java alternatives with:

sudo update-alternatives --list java
sudo update-alternatives --list javac


On Wed, Apr 1, 2015 at 10:35 AM, Ravindra Kumar Naik <ravin.iitb@gmail.com>
wrote:

> Hi,
>
> Creating batch program will not have the same effect. If you put the
> variables in /etc/environment then it will be available to all users on the
> operating system. HDFS doesn't run with root privileges.
> You need to open the application with *sudo* or with root privileges to
> modify it.
> e.g. If you are using vi editor then its just *sudo* *vim
> /etc/environment* (similar, if you are using other editors) and add
> environment variables there.
>
>
> On Wed, Apr 1, 2015 at 7:38 PM, Anand Murali <anand_vihar@yahoo.com>
> wrote:
>
>> Mr. Ravindra:
>>
>> This is visible, however I am unable to modify it, eventhough I have
>> admin priveleges. I am new to the Linux environment. Shall be glad if you
>> did advise. However, as I told you earlier, I have created a batch program
>> which contains, JAVA_HOME setting, HADOOP_INSTALL setting and PATH setting.
>> I have rfun this file but I am still unable to start the daemons. I am
>> following Tom Whyte's -Hadoop definitive Guide book instructions on how to
>> install Hadoop.
>>
>> at $hadoop version works. I am able to format namenode, but fail to start
>> daemons.
>>
>> Reply most welcome.
>>
>> Thanks
>>
>> Anand Murali
>> 11/7, 'Anand Vihar', Kandasamy St, Mylapore
>> Chennai - 600 004, India
>> Ph: (044)- 28474593/ 43526162 (voicemail)
>>
>>
>>
>>   On Wednesday, April 1, 2015 7:04 PM, Ravindra Kumar Naik <
>> ravin.iitb@gmail.com> wrote:
>>
>>
>> Are you sure that its not there, could you please check the output of
>> this command
>>
>> ls /etc/env*
>>
>>
>>
>> On Wed, Apr 1, 2015 at 6:55 PM, Anand Murali <anand_vihar@yahoo.com>
>> wrote:
>>
>> Mr. Ravindra:
>>
>> I am using Ubuntu 14. Can you please provide the full path. I am logged
>> in as root and it is not found in /etc. In any case what you have suggested
>> I have tried creating a batch file and it does not work in my installation.
>>
>> Thanks
>>
>>
>>
>> Anand Murali
>> 11/7, 'Anand Vihar', Kandasamy St, Mylapore
>> Chennai - 600 004, India
>> Ph: (044)- 28474593/ 43526162 (voicemail)
>>
>>
>>
>>   On Wednesday, April 1, 2015 6:50 PM, Ravindra Kumar Naik <
>> ravin.iitb@gmail.com> wrote:
>>
>>
>> I meant /etc/environment. It should be present if you are using Ubuntu.
>>
>> Regards,
>> Ravindra
>>
>> On Wed, Apr 1, 2015 at 6:39 PM, Anand Murali <anand_vihar@yahoo.com>
>> wrote:
>>
>> Mr. Ravindra
>>
>> I dont find any etc/environment. Can you be more specific please. I have
>> done whatever you are saying in a user created batch program and run it,
>> followed by running hadoop-env.sh and it still does not work.
>>
>> Thanks
>>
>> Anand Murali
>> 11/7, 'Anand Vihar', Kandasamy St, Mylapore
>> Chennai - 600 004, India
>> Ph: (044)- 28474593/ 43526162 (voicemail)
>>
>>
>>
>>   On Wednesday, April 1, 2015 6:10 PM, Ravindra Kumar Naik <
>> ravin.iitb@gmail.com> wrote:
>>
>>
>> Hi,
>>
>> If you are using Ubuntu then add these lines to /etc/environment
>> JAVA_HOME=*<actual path to jdk>*
>>
>> PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:$JAVA_HOME/bin"
>>
>> Please put the actual path to JDK in the first line.
>>
>> Regards,
>> Ravindra
>>
>>
>> On Wed, Apr 1, 2015 at 5:50 PM, roland.depratti <roland.depratti@cox.net>
>> wrote:
>>
>> Anand,
>>
>> Sorry about that, I was assuming Redhat/Centos.
>>
>> For Ubuntu, try sudo update-alternatives --config java.
>>
>>
>>
>> Sent from my Verizon Wireless 4G LTE smartphone
>>
>>
>> -------- Original message --------
>> From: Anand Murali <anand_vihar@yahoo.com>
>> Date: 04/01/2015 7:22 AM (GMT-05:00)
>> To: user@hadoop.apache.org
>> Subject: Re: Hadoop 2.6 issue
>>
>> Dear Mr.Roland:
>>
>> The alternatives command errors out. I have the extracted version of the
>> Oracle JDK7. However I am ignorant regarding its installation on Ubuntu.
>> Can you point me to installation material so that I can look up and try.
>>
>> Thanks
>>
>> Regards,
>>
>> Anand Murali
>> 11/7, 'Anand Vihar', Kandasamy St, Mylapore
>> Chennai - 600 004, India
>> Ph: (044)- 28474593/ 43526162 (voicemail)
>>
>>
>>
>>   On Wednesday, April 1, 2015 4:33 PM, Roland DePratti <
>> roland.depratti@cox.net> wrote:
>>
>>
>> Anand,
>>
>> My guess is that your alternatives setup isn’t complete.
>>
>> At a prompt, as su, run the command ‘alternatives - - config java’. Make
>> sure that the oracle version is listed and is marked as the active one.
>>
>> If it is not, go through the steps to make sure it is.
>>
>> -          rd
>>
>> *From:* Anand Murali [mailto:anand_vihar@yahoo.com]
>> *Sent:* Wednesday, April 01, 2015 5:42 AM
>> *To:* user@hadoop.apache.org
>> *Subject:* Re: Hadoop 2.6 issue
>>
>> I continue to get the samede error.I
>>
>> export JAVA_HOME=/home/anand_vihar/jdk1.0.7_u75 (in hadoop-env.sh)
>>
>>
>> when I echo $JAVA_HOME it shows me the above path but when I $java
>> -version, it gives me openjdk version
>>
>> start-dfs.sh ....... errors out saying JAVA_HOME not set., but echo shows
>> JAVA_HOME. Strange !!
>>
>>
>> Regards,
>>
>> Anand Murali
>> 11/7, 'Anand Vihar', Kandasamy St, Mylapore
>> Chennai - 600 004, India
>> Ph: (044)- 28474593/ 43526162 (voicemail)
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>

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