hadoop2.7 +hive 1.2 select count(*) 没出结果

[luleyong]

hadoop 日志：
Hadoop job information for Stage-1: number of mappers: 0; number of reducers: 0
2015-09-28 14:29:09,714 Stage-1 map = 0%, reduce = 0%
Ended Job = job_1443420059144_0002 with errors
Error during job, obtaining debugging information...
FAILED: Operation cancelled
MapReduce Jobs Launched:
Stage-Stage-1: HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec
Query ID = root_20150928142912_002ed404-1b70-418a-9046-9290f0aacf2e
Total jobs = 1
Launching Job 1 out of 1
Number of reduce tasks determined at compile time: 1
In order to change the average load for a reducer (in bytes):
set hive.exec.reducers.bytes.per.reducer=<number>
In order to limit the maximum number of reducers:
set hive.exec.reducers.max=<number>
In order to set a constant number of reducers:
set mapreduce.job.reduces=<number>
Starting Job = job_1443420059144_0003, Tracking URL = http://hadoopmaster:8088/proxy/application_1443420059144_0003/
Kill Command = /usr/local/hadoop-2.7.1/bin/hadoop job -kill job_1443420059144_0003