The code samples use hadoop 0.20.2 as i see it in pom.xml. So there is a version mismatch between the client libs and hadoop cluster. See if you can change the dependences to 1.1.2 and see if it builds.
On Jul 6, 2013, at 3:22 PM, Manal Helal wrote: > Hi, > > I installed hadoop 1.1.2 on 4 nodes (one is CentOS and the rest are ubuntu) > and I successfully did the word count example. > > Then I installed mahout and compiled it and defined the environment vatiable > MAHOUT_HOME > > then the hadoop in practice repository ( > git://github.com/alexholmes/hadoop-book.git) > > everything in the monitors look normal, but I can not run any example: such > as > > $bin/run.sh com.manning.hip.ch1.InvertedIndexMapReduce \ > /tmp/file1.txt /tmp/file2.txt output > > and $ bin/run.sh com.manning.hip.ch9.Synthetic2DClusteringPrep > test-data/ch9/synthetic.txt syn-seq > > or all commands throw this exception, > Exception in thread "main" org.apache.hadoop.ipc.RPC$VersionMismatch: > Protocol org.apache.hadoop.hdfs.protocol.ClientProtocol version mismatch. > (client = 63, server = 61) > > all nodes use java 1.6.0-27, the centos node was 1.6.0-24 I guess but I > removed it now, > > I have found thread talking about hdfs version mismatch but I used the same > hadoop version on all nodes nothing specific about hdfs, and these > applications on one node only, and removed the only difference in java > version I have found, > > I appreciate your help very much, > > thanks in advance > -- > Kind Regards, > > Manal Helal
