block by block. open multiple connections and write multiple files if you are not saturating your network connection. Generally a single file writer writing large blocks rapidly will do a decent job of saturating things.
On Mon, Apr 27, 2009 at 2:22 AM, Xie, Tao <xietao1...@gmail.com> wrote: > > hi, > If I write a large file to HDFS, will it be split into blocks and > multi-blocks are written to HDFS at the same time? Or HDFS can only write > block by block? > Thanks. > -- > View this message in context: > http://www.nabble.com/write-a-large-file-to-HDFS--tp23252754p23252754.html > Sent from the Hadoop core-user mailing list archive at Nabble.com. > > -- Alpha Chapters of my book on Hadoop are available http://www.apress.com/book/view/9781430219422
