hive执行drop table的命令时，会擦死！各位大神帮忙看看

hive> drop table mydb.employee;
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=Driver.run from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=TimeToSubmit from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=compile from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=parse from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO parse.ParseDriver: Parsing command: drop table mydb.employee
16/07/05 10:44:53 [main]: INFO parse.ParseDriver: Parse Completed
16/07/05 10:44:53 [main]: INFO log.PerfLogger: </PERFLOG method=parse start=1467686693488 end=1467686693489 duration=1 from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=semanticAnalyze from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO ql.Driver: Semantic Analysis Completed
16/07/05 10:44:53 [main]: INFO log.PerfLogger: </PERFLOG method=semanticAnalyze start=1467686693490 end=1467686693555 duration=65 from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO ql.Driver: Returning Hive schema: Schema(fieldSchemas:null, properties:null)
16/07/05 10:44:53 [main]: INFO log.PerfLogger: </PERFLOG method=compile start=1467686693488 end=1467686693556 duration=68 from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO ql.Driver: Concurrency mode is disabled, not creating a lock manager
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=Driver.execute from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO ql.Driver: Starting command(queryId=hadoop_20160705104453_3fa70ba3-5986-43de-9d78-2a4aeed712a7): drop table mydb.employee
16/07/05 10:44:53 [main]: INFO log.PerfLogger: </PERFLOG method=TimeToSubmit start=1467686693488 end=1467686693556 duration=68 from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=runTasks from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO log.PerfLogger: <PERFLOG method=task.DDL.Stage-0 from=org.apache.hadoop.hive.ql.Driver>
16/07/05 10:44:53 [main]: INFO ql.Driver: Starting task [Stage-0:DDL] in serial mode