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标题: 这里有一个Hive问题需要请教？ [打印本页]

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作者: lxmdmx    时间: 2019-3-6 17:02
标题: 这里有一个Hive问题需要请教？
运行hive> select count(*) from ngram;  后出现下面的错误

Starting Job = job_1551889538735_0004, Tracking URL = http://hadoop01:8088/proxy/application_1551889538735_0004/
Kill Command = /home/opt/tar/hadoop/bin/hadoop job  -kill job_1551889538735_0004
Hadoop job information for Stage-1: number of mappers: 0; number of reducers: 0
2019-03-07 00:48:50,924 Stage-1 map = 0%,  reduce = 0%
Ended Job = job_1551889538735_0004 with errors
Error during job, obtaining debugging information...
FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
MapReduce Jobs Launched:
Stage-Stage-1:  HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec

但是select * form ngram;  是可以正确运行的。请问如何解决

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