我是Kylin的新手，我通过以下网址创建Kylin模型和立方体，
http://kylin.apache.org/
一开始是成功的，我再次为同一个模型创建了新的多维数据集，当时多维数据集构建在第三步失败，

# 3 Step Name: Extract Fact Table Distinct Columns

实际上，我有一些重复的行，所以我删除了配置单元中的那些行，并将kylin表与配置单元表同步。但这并没有完成第三步。我查看了日志，发现以下错误，

2016-12-29 11:50:45,421 ERROR [IPC Server handler 18 on 46096] org.apache.hadoop.mapred.TaskAttemptListenerImpl: Task: attempt_1482297779079_0128_m_000000_0 - exited : java.lang.ArrayIndexOutOfBoundsException: -1
    at org.apache.kylin.engine.mr.steps.FactDistinctHiveColumnsMapper.putRowKeyToHLL(FactDistinctHiveColumnsMapper.java:179)
    at org.apache.kylin.engine.mr.steps.FactDistinctHiveColumnsMapper.map(FactDistinctHiveColumnsMapper.java:155)
    at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
    at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
    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:1724)
    at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)

2016-12-29 11:50:45,421 INFO [IPC Server handler 18 on 46096] org.apache.hadoop.mapred.TaskAttemptListenerImpl: Diagnostics report from attempt_1482297779079_0128_m_000000_0: Error: java.lang.ArrayIndexOutOfBoundsException: -1
    at org.apache.kylin.engine.mr.steps.FactDistinctHiveColumnsMapper.putRowKeyToHLL(FactDistinctHiveColumnsMapper.java:179)
    at org.apache.kylin.engine.mr.steps.FactDistinctHiveColumnsMapper.map(FactDistinctHiveColumnsMapper.java:155)
    at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)

任何人请分享任何想法如何解决这个问题。什么是基数在Kylin数据源的意思。