If I'm using a replication factor of 3 and I write a block of data will my write operation block until the data is present on 3 nodes? or will it block until the data is present on 1 node and asynchronously replicate from there to 2 other nodes? If the former, can I write it with a replication factor of 1 and then tell the NameNode to up the replication factor on my behalf (asynchronously) recognizing the lower level of fault tolerance between when I finish writing my first copy and the time at which the two other replicas are written?
regards, Andrew
