hi,shaofeng:

Error: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class 
org.apache.kylin.engine.mr.steps.FactDistinctColumnsMapper not found at 
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195) at 
org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:187)
 at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:747) at 
org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at 
org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164) at 
java.security.AccessController.doPrivileged(Native Method) at 
javax.security.auth.Subject.doAs(Subject.java:422) at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
 at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) Caused by: 
java.lang.ClassNotFoundException: Class 
org.apache.kylin.engine.mr.steps.FactDistinctColumnsMapper not found at 
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101) at 
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193) ... 8 
more


build 2.1 branch release

Thanks。

Longer


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