Hi Abhishek, I fail to understand what you mean by that; but HDFS generally has no client-exposed file locking on reads. There's leases for preventing multiple writers to a single file, but nothing on the read side.
Replication of the blocks under a file is a different concept and is completely unrelated to this. This needs to be built at your application's/stack's access/control levels, since HDFS does not provide this. On Fri, Feb 22, 2013 at 9:33 PM, abhishek <abhishek.dod...@gmail.com> wrote: > Harsh, > > Can we load the file into HDFS with one replication and lock the file. > > Regards > Abhishek > > > On Feb 22, 2013, at 1:03 AM, Harsh J <ha...@cloudera.com> wrote: > >> HDFS does not have such a client-side feature, but your applications >> can use Apache Zookeeper to coordinate and implement this on their own >> - it can be used to achieve distributed locking. While at ZooKeeper, >> also checkout https://github.com/Netflix/curator which makes using it >> for common needs very easy. >> >> On Fri, Feb 22, 2013 at 5:17 AM, abhishek <abhishek.dod...@gmail.com> wrote: >>> >>>> Hello, >>> >>>> How can I impose read lock, for a file in HDFS >>>> >>>> So that only one user (or) one application , can access file in hdfs at >>>> any point of time. >>>> >>>> Regards >>>> Abhi >>> >>> -- >> >> >> >> -- >> Harsh J >> >> -- >> >> >> -- Harsh J
