统计/root/test.txt中各个单词的个数
input = load '/root/test.txt' as(line:chararray);
words = foreach input generate flatten(TOKENIZE(line)) as word;
grpd = group words by word;
cntd = foreach grpd generate group, COUNT(words);
dump cntd;
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统计/root/test.txt中各个单词的个数
input = load '/root/test.txt' as(line:chararray);
words = foreach input generate flatten(TOKENIZE(line)) as word;
grpd = group words by word;
cntd = foreach grpd generate group, COUNT(words);
dump cntd;
OperatorSymbol NotesAND andOR orNOTnot
Pig的安装Pig作为客户端程序运行,即使你准备在Hadoop集群上使用Pig,你也不需要在集群上做任何安装。Pig从本地提交作业,并和Hadoop进行交互。1
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