How does Mapper class identify the SequenceFile as inputfile in hadoop?
You do not need to manually read the sequence file. Just set theinput format class to sequence file:
job.setInputFormatClass(SequenceFileInputFormat.class);and set the input path to the directory containing yor sequence files.
FileInputFormat.setInputPaths(<path to the dir containing your sequence files>);You will need to pay attention to the (Key,Value) types of the inputs on the parameterized types of your Mapper class to match the (key,value) tuples inside your sequence file.