The core is locating bin/java. If you execute ls -l
/usr/lib/jvm/java-6-sun/bin, you will notice bin/java is a symbolic link
to jre/bin/java. So both of them are the same. Don't worry about that.
Mohamed Elsayed
Bibliotheca Alexandrina
On 01/18/2012 10:25 AM, Martinus Martinus wrote:
Hi Mohamed,
Thanks for your answer. I have setup it before into something like this :
JAVA_HOME=/usr/lib/jvm/java-6-sun
I don't know if that's should be the same or will it gave a different
result. I'll try it first.
Thanks.
On Wed, Jan 18, 2012 at 3:53 PM, Mohamed Elsayed
<[email protected] <mailto:[email protected]>>
wrote:
Hi Martinus,
As I remember, I started again from scratch and erased everything
related to hadoop in my machine. In my first run, there was an
error message (related to java) displayed after executing
bin/hadoop namenode -format. This message didn't appear in my
second run. So I believe your problem is in this point. Keep you
eyes on what is happening after executing this command. FYI, you
must set JAVA_HOME in conf/hadoop-env.sh by doing the following:
file `which java`
file /etc/alternatives/java
JAVA_HOME=/usr/lib/jvm/java-6-openjdk/jre
If you still can't run the example, try to set HADOOP_CLASSPATH in
conf/hadoop-env.sh to the example's path e.g.
HADOOP_CLASSPATH=../hadoop-0.20.203.0/hadoop-examples-0.20.203.0.jar.
But this variable is not necessary to fill.
If there is any error messages appeared after executing any
command, try to fix or write them here. I will try to help If I can.
Mohamed Elsayed
Bibliotheca Alexandrina
On 01/18/2012 04:28 AM, Martinus Martinus wrote:
Hi Mohamed,
Did you found out how to handle this thing? Because when I run
the hadoop-0.20.2-example.jar wordcount input output it just run,
but it didn't gave any log message and it won't stop running.
Thanks.
On Tue, Jan 17, 2012 at 7:29 PM, Mohamed Elsayed
<[email protected]
<mailto:[email protected]>> wrote:
Your case happened to me in the past. In first try to start
again from scratch and be sure that everything is going well
(working well e.g. namenode is working and there is no java
error) specifically after executing bin/hadoop namenode
-format. If you faced any hassles, don't hesitate to state
them here.
Mohamed Elsayed
Bibliotheca Alexandrina
On 01/16/2012 04:52 AM, Martinus Martinus wrote:
Hi Harsh,
I just reinstalled my master node again and it's worked
right now. But when I tried to run the example using command
bin/hadoop jar hadoop-0.20.2-examples.jar wordcount input
output, it just waiting and didn't gave me anything and
didn't stop either.
Thanks.
On Fri, Jan 13, 2012 at 8:22 PM, Harsh J <[email protected]
<mailto:[email protected]>> wrote:
What does the NameNode log in
$HADOOP_HOME/logs/hadoop-*namenode*.log carry?
On 13-Jan-2012, at 4:05 PM, Martinus Martinus wrote:
> Hi,
>
> I start-all.sh my hadoop master node, but I can't find
any namenode on it. Would anyone be so kindly to tell me
how to fix this problem?
>
> Thanks.
