hive报FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
hive可以进行如select * from t;简单查询；
一旦进行如select count(*) from t;就报错Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask；
查看日志如下：
2018-06-05 03:06:08,935 ERROR [main]: exec.Task (SessionState.java:printError(960)) - Ended Job = job_1528139042502_0001 with errors
2018-06-05 03:06:08,950 ERROR [Thread-28]: exec.Task (SessionState.java:printError(960)) - Error during job, obtaining debugging information...
在网上查找了n多解决方法，依然没有解决。
问题已经解决，一般是hadoop的安装出了问题，按照我的博文“