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.
