Question

我是Hadoop的新手，并且在Java方面相当称职。

我正在使用OSX Terminal观看此Hadoop教程：https://www.guru99.com/create-your-first-hadoop-program.html

我陷入了步骤8 运行MapReduce作业

$query =
"SELECT * FROM mail m
    WHERE ( receiver = '$username' OR sender = '$username' )
    AND timestamp = ( select max(timestamp) from mail m2
                      WHERE ( receiver = '$username' OR sender = '$username' )
                      AND m.date = m2.date )";

我跑了：$HADOOP_HOME/bin/hadoop jar ProductSalePerCountry.jar /inputMapReduce /mapreduce_output_sales

输出：jar -cvf /Users/MrsGrandChamps/MapReduceTutorial/ProductSalePerCountry.jar Manifest.txt SalesCountry/*.class

然后我跑了added manifest adding: Manifest.txt(in = 43) (out= 35)(deflated 18%) adding: SalesCountry/SalesCountryDriver.class(in = 1666) (out= 819)(deflated 50%) adding: SalesCountry/SalesCountryReducer.class(in = 1585) (out= 632)(deflated 60%) adding: SalesCountry/SalesMapper.class(in = 1708) (out= 647)(deflated 62%) 我收到以下错误：

$ /usr/local/Cellar/hadoop/3.1.1/bin/hadoop jar ProductSalePerCountry.jar SalesCountry /inputMapReduce /mapreduce_output_sales

我已经玩了一点，无论.jar文件之后的参数中有什么内容，我都会收到该错误。

任何帮助将不胜感激！

运行.Jar时出现Hadoop MapReduce错误

0 个答案: