On Thu, Sep 16, 2010 at 3:59 PM, Vidhyashankar Venkataraman <[email protected]> wrote: > Hi > Can someone explain (or refer me to a twiki which explains) which versions > of Hbase can be safely rolled back i.e., without any changes to the > underlying database and state? >
You cannot rollback without cluster restart, not yet anyways. If you cluster restart, you can go back from latest 0.20 release all the ways to 0.20.0 I believe. There were no changes in data format changes. You cannot go back beyond 0.20.x to 0.19.x. Data format changed between those versions. Its looking like it might be possible to go back to 0.20.x from 0.89.x or even 0.90.x its looking like since again no format changes. Why you asking? St.Ack
