My latest information (not from me, from actual experts) says it is NOT the right approach. Look further into that discussion thread. I do not understand why (http://hbase.apache.org/notsoquick.html#hadoop) still points at that misleading message.
Regards, Mike Spreitzer From: praveenesh kumar <praveen...@gmail.com> To: common-user@hadoop.apache.org, u...@hbase.apache.org Date: 06/06/2011 09:24 AM Subject: Re: Hadoop not working after replacing hadoop-core.jar with hadoop-core-append.jar Hello guys.. Changing the name of the hadoop-apppend-core.jar file to hadoop-0.20.2-core.jar did the trick.. Its working now.. But is this the right solution to this problem ?? Thanks, Praveenesh On Mon, Jun 6, 2011 at 2:18 PM, praveenesh kumar <praveen...@gmail.com>wrote: > > Hi, > > Not able to see my email in the mail archive..So sending it again...!!! > Guys.. need your feedback..!! > > Thanks, > Praveenesh > ---------- Forwarded message ---------- > From: praveenesh kumar <praveen...@gmail.com> > Date: Mon, Jun 6, 2011 at 12:09 PM > Subject: Hadoop is not working after adding > hadoop-core-0.20-append-r1056497.jar > To: common-user@hadoop.apache.org, u...@hbase.apache.org > > > Hello guys..!!! > > I am currently working on Hbase 0.90.3 and Hadoop 0.20.2 > > Since this hadoop version does not support rsync hdfs.. > so I copied the *hadoop-core-append jar* file from *hbase/lib* folder > into* hadoop folder* and replaced it with* hadoop-0.20.2-core.jar* > which was suggested in the following link > > > http://www.apacheserver.net/Using-Hadoop-bundled-in-lib-directory-HBase-at1136240.htm > > I guess this is what have been mentioned in the link that I am doing. If I > am doing somehting wrong, kindly tell me. > > But now after adding that jar file.. I am not able to run my hadoop.. I am > getting following exception messages on my screen > > ub13: Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/hadoop/util/PlatformName > ub13: Caused by: java.lang.ClassNotFoundException: > org.apache.hadoop.util.PlatformName > ub13: at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > ub13: at java.security.AccessController.doPrivileged(Native Method) > ub13: at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > ub13: at java.lang.ClassLoader.loadClass(ClassLoader.java:321) > ub13: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > ub13: at java.lang.ClassLoader.loadClass(ClassLoader.java:266) > ub13: Could not find the main class: org.apache.hadoop.util.PlatformName. > Program will exit. > ub13: Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/hadoop/hdfs/server/datanode/DataNode > ub13: starting secondarynamenode, logging to > /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-secondarynamenode-ub13.out > ub13: Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/hadoop/util/PlatformName > ub13: Caused by: java.lang.ClassNotFoundException: > org.apache.hadoop.util.PlatformName > ub13: at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > ub13: at java.security.AccessController.doPrivileged(Native Method) > ub13: at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > ub13: at java.lang.ClassLoader.loadClass(ClassLoader.java:321) > ub13: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > ub13: at java.lang.ClassLoader.loadClass(ClassLoader.java:266) > ub13: Could not find the main class: org.apache.hadoop.util.PlatformName. > Program will exit. > ub13: Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/hadoop/hdfs/server/namenode/SecondaryNameNode > Have I done something wrong.. Please guide me...!! > > Thanks, > Praveenesh > >
