Re: Replication and failure

2011-07-28 Thread Harsh J
Mohit, I believe Tom's book (Hadoop: The Definitive Guide) covers this precisely well. Perhaps others too. Replication is a best-effort sort of thing. If 2 nodes are all that is available, then two replicas are written and one is left to the replica monitor service to replicate later as possible

Re: Replication and failure

2011-07-28 Thread Mohit Anchlia
On Thu, Jul 28, 2011 at 12:17 AM, Harsh J ha...@cloudera.com wrote: Mohit, I believe Tom's book (Hadoop: The Definitive Guide) covers this precisely well. Perhaps others too. Replication is a best-effort sort of thing. If 2 nodes are all that is available, then two replicas are written and

Replication and failure

2011-07-27 Thread Mohit Anchlia
Just trying to understand what happens if there are 3 nodes with replication set to 3 and one node fails. Does it fail the writes too? If there is a link that I can look at will be great. I tried searching but didn't see any definitive answer. Thanks, Mohit