Hi there
We plan to migrate a 30 nodes hadoop 1.0.1
cluster to the version 2.3.0. We don’t have extra machines to setup a separate
new cluster, thus hope to do an “in-place” migration by replacing the
components on the existing computers. So the questions are:
1)
Is it possible to do an
“in-place” migration, while keeping all data in HDFS safely?
2)
If it is yes, is there any
doc/guidance to do this?
3)
Is the 2.0.3 MR API binary
compatible with the one of 1.0.1?
Any information are highly appreciated.
Jerry Zhang
