HADOOP-11601 tightens up the filesystem spec by saying "if len(file) > 0, getFileStatus().getBlockSize() > 0"
this is to stop filesystems (most recently s3a) returning 0 as a block size, which then kills any analytics work that tries to partition the workload by blocksize. I'm currently changing the markdown text to say MUST be >0 for a file size >0 MAY be 0 for a file of size==0. + the relevant tests to check this. There's one thing I do want to understand from HDFS first: what about small files.? That is: what does HDFS return as a blocksize if a file is smaller than its block size? -Steve
