使用 Piggybank 中的 CSVLoader 时出错 [英] Error using CSVLoader from piggybank

问题描述

我正在尝试使用 Piggybank 的 CSVLoader.下面是我的代码的前两行:

I am trying to use CSVLoader from Piggybank. Below are the first two lines of my code:

  register 'piggybank.jar' ;
  define CSVLoader org.apache.pig.piggybank.storage.CSVLoader();

它抛出以下错误:

  2013-10-24 14:26:51,427 [main] INFO         
  org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to hadoop file    
  system at: file:///
  2013-10-24 14:26:52,029 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve org.apache.pig.piggybank.storage.CSVLoader using imports: [, org.apache.pig.builtin., org.apache.pig.impl.builtin.]

谁能告诉我这是怎么回事?我正在从 piggybank.jar 所在的同一文件夹中执行此脚本.

Can someone tell me what's going on? I am executing this script from the same folder where my piggybank.jar is located.

推荐答案

我在试验 pig 时遇到了类似的问题，尽管它是适合我的 XMLLoader.对我有用的解决方案是注册 jar 的整个路径，而不是相对路径.因此，如果 jar 位于/usr/lib/pig/piggybank.jar，请按如下方式运行代码:

I ran into a similar problem when I was experimenting with pig, although it was the XMLLoader for me. The solution that worked for me was to register the entire path to the jar, instead of the relative path. so if the jar is located at /usr/lib/pig/piggybank.jar run the code as follows:

register '/usr/lib/pig/piggybank.jar' ;
  define CSVLoader org.apache.pig.piggybank.storage.CSVLoader();

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