Short is answer I am afraid is no.
As an alternative, I recommend upgrading to latest 0.19.x or 0.20.0 (to be released in couple of days). 0.19.2 is certainly a lot better than 0.19.0. Yahoo is rolling out 0.20.x if that helps your confidence.
Raghu. David Ritch wrote:
There is an established procedure for upgrading from one release of Hadoop to a newer release. Is there something similar to move back to an lower-numered release? Specifically, we have data in a cloud running Hadoop-19.0. Because of stability issues, we are wondering whether we should move back to 18, but we don't want to lose our data. Is there a downward migration path? Thanks, David
