Hi Hongxu! That is correct. At any point there can only be 1 writer. This is enforced by requiring the writer to acquire leases. There may be multiple readers.
HTH Ravi On Wed, Jul 26, 2017 at 12:31 AM, Hongxu Ma <inte...@outlook.com> wrote: > Hi hdfs-dev > > Question as the subject. > > I googled some pages and wrote a test program to validate it. > Seems doesn't support (my test program gave: No lease on XXX error > message). > > Just for confirmation, thanks. > > -- > Regards, > Hongxu. >