What is KeyValueTextInputFormat in Hadoop?
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What is KeyValueTextInputFormat in MapReduce?
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KeyValueTextInputFormat breaks the input line itself into key and value by a tab character (‘/t’). Each line represents a key and value delimited by a separator. Here the key is everything up to the tab character while the value is the remaining part of the line after tab character. The key and value are empty if the separator is missing.
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