pig中load文件时报错

grunt> A=load 'data.txt' as (name: chararray, id: int, age: int); 
2012-09-11 18:06:32,072 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1000: Error during parsing. Encountered " <PATH> "A=load "" at line 3, column 1.
Was expecting one of:
    <EOF> 
    "cat" ...
    "fs" ...
    "sh" ...
    "cd" ...
    "cp" ...
    "copyFromLocal" ...
    "copyToLocal" ...
    "dump" ...
    "describe" ...
    "aliases" ...
    "explain" ...
    "help" ...
    "kill" ...
    "ls" ...
    "mv" ...
    "mkdir" ...
    "pwd" ...
    "quit" ...
    "register" ...
    "rm" ...
    "rmf" ...
    "set" ...
    "illustrate" ...
    "run" ...
    "exec" ...
    "scriptDone" ...
    "" ...
    <EOL> ...
    ";" ...
    
Details at logfile: /home/hadoop/pig-0.10.0/logs

不能为:grunt> A=load 'data.txt' as (name: chararray, id: int, age: int);
下面两种都可以:(注意,上面的不能运行主要是A后面一定要有空格)
grunt> A =load 'data.txt' as (name: chararray, id: int, age: int);
grunt> A = load 'data.txt' as (name: chararray, id: int, age: int);

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