什么＆＃34;遇到：<eof>之后：＆＃34;＆＃34; ＆＃34;意思是使用猪</eof>

Question

我是Hadoop和Pig的初学者。我检查了在cloudera虚拟图像中证明的示例，并将其模拟为计算前5个常用词：

Lines = LOAD '/user/hue/pig/examples/data/midsummer.txt' as (line:CHARARRAY);
Words = FOREACH Lines GENERATE FLATTEN(TOKENIZE(line)) AS word;
Groups = GROUP Words BY word;
Counts = FOREACH Groups GENERATE group, COUNT(Words);
Results = ORDER Words BY Counts DESC;
Top5 = LIMIT Results 5;
STORE Top5 INTO /user/hue/pig/examples/data/summertop5Hi 

但是，当我运行此脚本时，我收到此消息错误：

ERROR org.apache.pig.tools.grunt.Grunt  - ERROR 1000: Error during parsing. Lexical error at line 8, column 0.  Encountered: <EOF> after : ""

这是什么意思？

Answer 1

您需要在代码中修复三个问题才能使其正常工作  1。STORE stmt未正确结束semicolon     2. STORE stmt输出文件未正确包含在single quotes中     3.需要在Counts and Results stmt逻辑中稍作修改。

修改后的脚本：

Lines = LOAD '/user/hue/pig/examples/data/midsummer.txt' as (line:CHARARRAY);
Words = FOREACH Lines GENERATE FLATTEN(TOKENIZE(line)) AS word;
Groups = GROUP Words BY word;
Counts = FOREACH Groups GENERATE group, COUNT(Words) AS cnt;
Results = ORDER  Counts BY cnt DESC;
Top5 = LIMIT Results 5;
STORE Top5 INTO '/user/hue/pig/examples/data/summertop5';

如果您在脚本中遇到任何问题，请与我们联系。