Which HBase release are you using ? Mind showing us how you initialize the reduce tasks ?
Cheers On Tue, Jul 23, 2013 at 12:26 PM, arun sirimalla <[email protected]>wrote: > I am running mapreduce job to insert the data into HBase, Map phase is > running fine, but when the reducer starts it fails on all nodes except one > node and i notice below error on failed tasks. Out of 12 tasktrackers, one > tasktracker can connect to HBase and insert the data. Class path is set on > all nodes, but unable to figure out whats the root cause. No issues with > HBase, i can scan the tables. > > Caused by: java.lang.NoClassDefFoundError: > org/apache/hadoop/hbase/MasterNotRunningException > at > com.netapp.asupdata.configloader.hbase.HbaseConnectionManager.initializeAllConnections(HbaseConnectionManager.java:161) > at > com.netapp.asupdata.configloader.mapreduce.AbstractLoaderReducer.configure(AbstractLoaderReducer.java:112) > at > com.netapp.asupdata.configloader.mapreduce.BackfillLoaderReducer.configure(BackfillLoaderReducer.java:20) > ... 14 more > Caused by: java.lang.ClassNotFoundException: > org.apache.hadoop.hbase.MasterNotRunningException > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > > Thanks > Arun >
