Re: namenode restart

2012-06-10 Thread Harsh J
Clients can't currently handle NN restarts gracefully. At least on my 1.x/0.20.x tests, the client didn't fail if it didn't had a new block to allocate (when the NN was being restarted, since it didn't make a connection to the NN at all) but it did fail when it was writing small blocks very fast

Re: Sync and Data Replication

2012-06-10 Thread Harsh J
Mohit, On Sat, Jun 9, 2012 at 11:11 PM, Mohit Anchlia mohitanch...@gmail.com wrote: Thanks Harsh for detailed info. It clears things up. Only thing from those page is concerning is what happens when client crashes. It says you could lose upto a block worth of information. Is this still true

Re: Sync and Data Replication

2012-06-10 Thread Mohit Anchlia
On Sun, Jun 10, 2012 at 9:39 AM, Harsh J ha...@cloudera.com wrote: Mohit, On Sat, Jun 9, 2012 at 11:11 PM, Mohit Anchlia mohitanch...@gmail.com wrote: Thanks Harsh for detailed info. It clears things up. Only thing from those page is concerning is what happens when client crashes. It