HDFS does have file-append support (i.e. add data at end of a
previously closed file). HDFS does not have random-write support (i.e.
writing data at a selected offset in the file).
What is your use-case though, that you seek to do updates over files
on HDFS? Perhaps you are instead looking for HBase, which has a
slightly different way of storing things but provides updates+versions
in a way over HDFS.
On Wed, Oct 31, 2012 at 10:28 AM, Siva Gudavalli
<[EMAIL PROTECTED]> wrote:
> Is there any mechanism on how to do updates to a files on hdfs?