I made a mistake on misplacing the port no. for MR master with HDFS master. After correcting that, it works. George
2009/5/19 George Pang <p09...@gmail.com> > Dear Users, > > When I tried to access the DFS, an error message apears: > > Error: java.io.IOException: Unknown protocol to job tracker: > org.apache.hadoop.dfs.ClientProtocol > at > org.apache.hadoop.mapred.jobTracker.getProtocolVersion(JobTracker.java:163) > at sun.reflec.NativeMethodAccessorimpl.invoke0(Native Method) > at > sun.reflec.NativeMethodAccessorimpl.invoke0(NativeMethodAccessorimpl.java:39) > at > sun.reflec.NativeMethodAccessorimpl.invoke0(DelegatingMethodAccessorimpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:481) > at org.apache.hadoop.ipc.Server$Handler.run(Server:java:890) > > Hadoop version: 0.18.3 > > I'd appreciate your opinion! > > George >
