Re: no namenode

Hi Martinus, I am not sure what causes this exception. Do you think you could attach namenode's and datanode's log file? They might lead us to the cause of exception. I can't say there is a problem in connectivity between namenode and datanodes, because you said the file exists in datanodes!

Re: no namenode

Hi Mohamed, I got this when I tried to bin/hadoop dfs -put single.txt input/ : 12/01/30 17:52:40 INFO hdfs.DFSClient: Exception in createBlockOutputStream 172.16.4.85:50010 java.io.IOException: Bad connect ack with firstBadLink as 172.16.2.130:50010 12/01/30 17:52:40 INFO hdfs.DFSClient: Abandoni

Re: no namenode

Hi Michael/Mohamed, Thanks for your explanation. How about if I got this on my master node jobtracker logs? http://pastie.org/3211911 what does it means? and I used hadoop to do map/reduce on MongoDB database. Thanks. On Thu, Jan 19, 2012 at 10:17 AM, Michael Lok wrote: > Hi Martinus, > > Wh

Re: no namenode

Hi Michael/Mohamed, Thanks for your explanation. How about if I got this on my master nob jobtracker logs? http://pastie.org/3211911 what does it means? and I used hadoop to do map/reduce on MongoDB database. Thanks. On Thu, Jan 19, 2012 at 10:17 AM, Michael Lok wrote: > Hi Martinus, > > Whi

Re: no namenode

Hi Martinus, While you can run the two instances of Hadoop on the same machine, you'll need to reconfigure the listening ports for MR/HDFS and the webapps to run on different ports. The easier way to Hadoop as a different user is: - stop current Hadoop instance - su as the intended user - re-ins

Re: no namenode

Hi Mohamed, Thanks for your suggestion, but how do we moved the ownership of our hadoop installation from root to another user account? and can we install two different versions of hadoop on the same machine? Thanks. On Wed, Jan 18, 2012 at 8:30 PM, Mohamed Elsayed < mohammed.elsay...@bibalex.or

Re: no namenode

Run hadoop using Martinus account, not root account. It will work well with you. If there is anything wrong with you, don't hesitate to write it here. Thank you. Mohamed Elsayed Bibliotheca Alexandrina On 01/18/2012 01:16 PM, Martinus Martinus wrote: Hi Mohamed, Please find attached the name

Re: no namenode

Hi Martinus, Do you think you could attach namenode's log file to find out where is the problem? Thank you. Mohamed Elsayed Bibliotheca Alexandrina On 01/18/2012 11:14 AM, Martinus Martinus wrote: Hi Mohamed, Thanks for your explanation. I still have the same problem as before. do you have

Re: no namenode

Hi Mohamed, Thanks for your explanation. I still have the same problem as before. do you have any other suggestion? Thanks. On Wed, Jan 18, 2012 at 4:52 PM, Mohamed Elsayed < mohammed.elsay...@bibalex.org> wrote: > The core is locating bin/java. If you execute ls -l > /usr/lib/jvm/java-6-sun/b

Re: no namenode

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 Moham

Re: no namenode

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 < mohammed.elsay...@

Re: no namenode

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 p

Re: no namenode

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 < mohammed.elsay...@bibalex.org> wro

Re: no namenode

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

Re: no namenode

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 8:2

Re: no namenode

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.

no namenode

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.