title: Hadoop split method
body: <p>I know and read many times Hadoop is not aware of what's inside the input file, and the  split depends on the InputFileFormat, but let's be more specific ... for example, i read GZIP is not splittable, so if i have a unique gzipped input file of 1 TB, and no one of the node have an hd of that size, what happens? input will be splitted but hadoop will add info about the dependencies between one chunk and others? <br><br> other question, if i have a huge .xml file, so basically text, how the split works, by line or by the configured MB of the block size? <br></p>