On Dec 13, 2010, at 8:49 PM, Eric Sammer wrote:
One of the technical issues is the fact that this precludes users
from using
PB (or thrift or avro) in their jobs if the version required
conflicts with
what Hadoop proper has on the classpath.
This is currently true of all of our libraries and is addressed by
MAPREDUCE-1938. After that is committed, users who want to override to
a newer version just need to configure their job to do so. Using a new
library, just because it is a serialization library other than Avro,
is not an acceptable reason to veto a patch.
-- Owen
