Dup key found when building cube

[????????]

Hi,


We are using kylin of latest version. But there is a error as following when 
building cube.
java.lang.IllegalStateException: Dup key found, key=[NA94092521], 
value1=[95859459,NA22686932NA94092521,NA22686932,NA94092521,A100,5,A201,20,NAC03,NAC03,PartScanE,2014/09/26,10:52:34,2014/09/26,1],
 
value2=[95859462,NA22686904NA94092521,NA22686904,NA94092521,A201,20,A401,40,NAC03,NAC03,a61007,2014/09/26,10:52:39,2014/09/26,1]
  at org.apache.kylin.dict.lookup.LookupTable.initRow(LookupTable.java:84)      
  at org.apache.kylin.dict.lookup.LookupTable.init(LookupTable.java:67)   at 
org.apache.kylin.dict.lookup.LookupStringTable.init(LookupStringTable.java:79)  
     at org.apache.kylin.dict.lookup.LookupTable.<init>(LookupTable.java:55)    
     at 
org.apache.kylin.dict.lookup.LookupStringTable.<init>(LookupStringTable.java:65)
     at org.apache.kylin.cube.CubeManager.getLookupTable(CubeManager.java:619)  
     at 
org.apache.kylin.cube.cli.DictionaryGeneratorCLI.processSegment(DictionaryGeneratorCLI.java:61)
      at 
org.apache.kylin.cube.cli.DictionaryGeneratorCLI.processSegment(DictionaryGeneratorCLI.java:42)
      at 
org.apache.kylin.engine.mr.steps.CreateDictionaryJob.run(CreateDictionaryJob.java:56)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)    at 
org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)    at 
org.apache.kylin.engine.mr.common.HadoopShellExecutable.doWork(HadoopShellExecutable.java:63)
        at 
org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:112)
       at 
org.apache.kylin.job.execution.DefaultChainedExecutable.doWork(DefaultChainedExecutable.java:57)
     at 
org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:112)
       at 
org.apache.kylin.job.impl.threadpool.DefaultScheduler$JobRunner.run(DefaultScheduler.java:127)
       at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
     at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
     at java.lang.Thread.run(Thread.java:745)


There are two tables. Fact table is M_ORDER, lookup table is M_SCAN. M_ORDER 
inner join M_SCAN with column ORDER_NAME. ORDER_NAME is unique for M_ORDER, but 
duplicated for M_SCAN.


What could we do to solve the problem? Thanks.


Zhang