More information from the developer would help. Also take a look at TableMapReduceUtil#initTableReducerJob() and how it is used in 0.94 code base.
Cheers On Tue, Jul 23, 2013 at 12:50 PM, arun sirimalla <[email protected]>wrote: > I am using HBase 94.6, i am not pretty sure about how we intialize > reducers. I can ask my developer regarding that. > Is there any other issue that can cause reduce task not connecting to > HBase? I Set only 1 reducer to this job, it succeeds only if that reducer > task is assigned to one of the tasktracker as mentioned in my previous > email. > > > On Tue, Jul 23, 2013 at 12:32 PM, Ted Yu <[email protected]> wrote: > > > 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 > > > > > >
