Hello xu, On Thu, May 5, 2011 at 1:19 PM, cheng xu <xcheng...@gmail.com> wrote: > as we know. the last block of file may be less then 64MB(as default > configged), then what will hdfs do with the remained space in the block?? > left for other files or just left unused??
Since no form of pre-allocation is performed while 'creating' blocks, it only consumes space as is required of the data being streamed. A 64 MB block size is a logical term in HDFS to signify the 'split size' of incoming data. -- Harsh J
