It's safe, all the big installs I know are either on some heavily patched 0.89 or a late version of 0.90.
You might want to do an export before upgrading, or a complete HDFS distcp, just for good measure. Also read this guide from the online book: http://hbase.apache.org/book/upgrading.html#upgrade0.90 J-D On Wed, Aug 3, 2011 at 11:34 AM, Greg Bledsoe <[email protected]> wrote: > We have been running 0.20.3 in fully distributed mode for almost a year now, > and we are going to upgrade. How big a jump is safe, and would best practice > going to 0.9x.y be to export, upgrade, format, import? > > Thanks > > Greg >
