dictionary - Map reduce java fails at mapping during its first reading -

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when i'm trying debug program on simple input, fails @ context.write(text, text) command. why this, , how can fix it?

public class taskmapper extends mapper<longwritable, text, text, text> {     private text country = new text();     private text browser = new text();     public void map(longwritable offset, text line, context context)              throws ioexception, interruptedexception {         string[] words = line.tostring().split(" ");          country.set(words[1]);         browser.set(words[0]);          context.write(country, browser);     } }

the input file is:

chrome israel ie israel firefox denmark safari denmark chrome israel


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