I see this core Improvement in release 1.0, JIRA url : https://issues.apache.org/jira/browse/KYLIN-926
However, after my test and check the source code , I find some rubbish(I am not sure) file in HDFS. First, kylin only drop the Intermediate table in hive, but the table is an EXTERNAL table, the file still exist in kylin tmp directory in HDFS(I check that..) Second, the cuboid files take a large space in HDFS, and kylin do not delete after the cube build(fact_distinct_columns files exist too). I am not sure if those has other effects, remind me please if it has.. Third, After I discard a job, I think kylin should delete the Intermediate files and drop Intermediate hive table, even though delete them asynchronous. I think those data do not have any effects..remind me please if it has.. These are rubbish datas still exist in current version(kylin-1.0), please check, thanks..
