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 <fula...@gmail.com> wrote: > 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-install Hadoop and reformat a namenode under the same user. > > I've tried to perform chown to my existing Hadoop installation. It > had some permission problems; but didn't really bother to troubleshoot > as I didn't have data in the data nodes. So I did a fresh install > like above. > > > Thanks. > > On Thu, Jan 19, 2012 at 10:06 AM, Martinus Martinus > <martinus...@gmail.com> wrote: > > 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.org> wrote: > >> > >> 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 namenode log. > >> > >> Thanks. > >> > >> On Wed, Jan 18, 2012 at 7:02 PM, Mohamed Elsayed > >> <mohammed.elsay...@bibalex.org> wrote: > >>> > >>> 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 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/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 > >>>> <mohammed.elsay...@bibalex.org> 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 > >>>>> <mohammed.elsay...@bibalex.org> 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 <ha...@cloudera.com> > 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. > >>>>>>> > >>>>>> > >>>>> > >>>> > >>> > >> > > >
