It seems need NULL check when doing cleanup dictionary tables.
2016-07-21 01:51:51,893 INFO [main CubeDescManager:197]: Reloading Cube Metadata from folder kylin_metadata(key='/cube_desc')@kylin_metadata@hbase 2016-07-21 01:51:51,984 DEBUG [main MetadataManager:311]: Reloading SourceTable from folder kylin_metadata(key='/table')@kylin_metadata@hbase 2016-07-21 01:51:52,098 DEBUG [main MetadataManager:320]: Loaded 5 SourceTable(s) 2016-07-21 01:51:52,098 DEBUG [main MetadataManager:252]: Reloading SourceTable exd info from folder kylin_metadata(key='/table_exd')@kylin_metadata@hbase 2016-07-21 01:51:52,148 DEBUG [main MetadataManager:261]: Loaded 5 SourceTable EXD(s) 2016-07-21 01:51:52,149 DEBUG [main MetadataManager:412]: Reloading DataModel from folder kylin_metadata(key='/model_desc')@kylin_metadata@hbase 2016-07-21 01:51:52,183 DEBUG [main MetadataManager:426]: Loaded 1 DataModel(s) 2016-07-21 01:51:52,183 DEBUG [main MetadataManager:297]: Reloading ExternalFilter from folder kylin_metadata(key='/ext_filter')@kylin_metadata@hbase 2016-07-21 01:51:52,192 DEBUG [main MetadataManager:306]: Loaded 0 ExternalFilter(s) 2016-07-21 01:51:52,211 DEBUG [main CubeDescManager:222]: Loaded 1 Cube(s) 2016-07-21 01:51:52,216 DEBUG [main CubeManager:855]: Reloaded new cube: ssb with reference beingCUBE[name=ssb] having 1 segments:KYLIN_KGEI5B28X9 2016-07-21 01:51:52,216 INFO [main CubeManager:826]: Loaded 1 cubes, fail on 0 cubes usage: MetadataCleanupJob -delete <delete> Delete the unused metadata Exception in thread "main" java.lang.NullPointerException at org.apache.kylin.engine.mr.steps.MetadataCleanupJob.cleanup(MetadataCleanupJob.java:136) at org.apache.kylin.engine.mr.steps.MetadataCleanupJob.run(MetadataCleanupJob.java:80) 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.steps.MetadataCleanupJob.main(MetadataCleanupJob.java:183) 2016-07-21 01:51:52,249 INFO [Thread-2 ConnectionManager$HConnectionImplementation:2220]: Closing master protocol: MasterService 2016-07-21 01:51:52,254 INFO [Thread-2 ConnectionManager$HConnectionImplementation:1876]: Closing zookeeper sessionid=0x1560af24691000a 2016-07-21 01:51:52,260 INFO [main-EventThread ClientCnxn:512]: EventThread shut down 2016-07-21 01:51:52,260 INFO [Thread-2 ZooKeeper:684]: Session: 0x1560af24691000a closed
