我运行了以下命令，包括在pig中的load和dump命令：我的文件在本地，我在独立的机器上。
grunt> custs = LOAD 'custs' USING PigStorage(',') As (id:long,name:chararray,surname:chararray,age:int,prof:chararray);
grunt> dump custs;我有个错误：
HadoopVersion PigVersion UserId StartedAt FinishedAt Features
2.7.1 0.15.0 sujit 2016-04-21 13:05:51 2016-04-21 13:05:51 UNKNOWN
Failed!
Failed Jobs:
JobId Alias Feature Message Outputs
N/A custs MAP_ONLY Message: java.lang.NullPointerException
Input(s):
Failed to read data from "file:///home/sujit/pig_data/custs"
Job DAG:
null
2016-04-21 13:05:51,277 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Failed!
2016-04-21 13:05:51,278 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1066: Unable to open iterator for alias custs
Details at logfile: /home/sujit/pig_data/pig_1461220631975.log但该文件存在，并具有所需的权限
sujit@sujit-pc:~/pig_data$ ls -l
total 4824
-rwxrwxrwx 1 sujit sujit 391355 Jun 9 2012 custs
1条答案
按热度按时间hsgswve41#
我收到这个错误是因为我还没有将本地文件复制到hdfs。
要将文件从本地复制到hdfs，可以使用以下命令
将本地文件复制到hdfs后，我不再收到错误。