How to read hadoop sequential file?
Check the API documentation for SequenceFile#next(Writable, Writable)
while(reader.next(key,value)){ System.out.println("Key is: "+textKey +" value is: "+val+"\n");}should be replaced with
while(reader.next(key,value)){ System.out.println("Key is: "+key +" value is: "+value+"\n");}Use SequenceFile.Reader#getValueClassName to get the value type in the SequenceFile. SequenceFile have the key/value types in the file header.