在运行HCatalog时出错 [英] Getting an error on running HCatalog

问题描述

  A = LOAD'eventnew.txt'USING HCatalogLoader（）; 
  

2015-07-08 19:56:34,875 [main] ERROR org.apache.pig.tools.grunt.Grunt - 错误1070：无法使用导入来解析HCatalogLoader：[，java.lang。，org.apache.pig.builtin。，org.apache.pig.impl.builtin。]
日志文件的详细信息：/home/KS5023833/pig_1436364102374.log

然后我尝试了

  A = LOAD'xyz'USING org.apache.hive.hcatalog.pig.HCatLoader（）; 
  

这也行不通。

1070：无法通过导入来解析org.apache.hive.hcatalog.pig.HCatLoader：[，java.lang。，org.apache.pig.builtin。，org.apache.pig.impl。内容。]

有什么问题？我是Hadoop的新手。

解决方案

正如GoBrewers14所述，您必须从-useHCatalog开始。如果您正在运行Pig脚本，另一种方法是确定HCatalog jar的位置，并将REGISTER语句的jar路径添加到脚本的顶部。

示例：

注册/home/user/Installations/hive-0.11.0-bin/hcatalog/share/hcatalog/hcatalog-core-0.11 .0.jar;

当然，您的路径/版本可能不同。

A = LOAD 'eventnew.txt' USING HCatalogLoader();

2015-07-08 19:56:34,875 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve HCatalogLoader using imports: [, java.lang., org.apache.pig.builtin., org.apache.pig.impl.builtin.] Details at logfile: /home/KS5023833/pig_1436364102374.log

Then I tried

 A = LOAD 'xyz' USING org.apache.hive.hcatalog.pig.HCatLoader();

This is also not working.

1070: Could not resolve org.apache.hive.hcatalog.pig.HCatLoader using imports: [, java.lang., org.apache.pig.builtin., org.apache.pig.impl.builtin.]

what is the problem? I am a novice in Hadoop.

解决方案

As stated by GoBrewers14 you must start pig with -useHCatalog. If you are running a Pig script an alternative is to determine the location of the HCatalog jar and add a REGISTER statement with the path of the jar to the top of your script

Example:

REGISTER /home/user/Installations/hive-0.11.0-bin/hcatalog/share/hcatalog/hcatalog-core-0.11.0.jar;

of course your path/version may be different.

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