+1 I don't think this creates an incompatibility. It changes the RPC wire format, but we already require that clients and servers run identical builds. No application that ran with a prior version of Hadoop would be broken by this change when it upgrades to this version of Hadoop.
Doug On 03/28/2011 09:39 PM, Konstantin Shvachko wrote: > HADOOP-6949 introduced a very important optimization to the RPC layer. Based > on the benchmarks presented in HDFS-1583 this provides an order of magnitude > improvement of current RPC implementation. > RPC is a common component of Hadoop projects. Many of them should benefit > from this change. But since this is an incompatible change it requires a > vote to be included into a previous branch. > Please vote for inclusion of this change into branch 0.22. > > +1 from me. > > Thanks, > --Konstantin >
