hive 函数参数产生的错误：Hive Runtime Error while processing row {"sys":"0"}

函数参数用错 产生的错误：

select from_unixtime(unix_timestamp(),'YYYY-mm-dd') from default.dual;

Diagnostic Messages for this Task:
java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row {"sys":"0"}
at org.apache.hadoop.hive.ql.exec.ExecMapper.map(ExecMapper.java:162)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:390)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:324)
at org.apache.hadoop.mapred.Child$4.run(Child.java:266)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1278)
at org.apache.hadoop.mapred.Child.main(Child.java:260)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row {"sys":"0"}
at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:671)
at org.apache.hadoop.hive.ql.exec.ExecMapper.map(ExecMapper.java:144)
... 8 more
Caused by: org.apache.hadoop.hive.ql.meta

FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask
MapReduce Jobs Launched:
Job 0: Map: 1 HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec

正确的用法：

select from_unixtime(unix_timestamp(),'yyyy-MM-dd') from default.dual;