We recently upgraded from CDH4 to CDH5, hbase included. We backed up our HBase table directories beforehand. The upgrade didnt go as smoothly as we anticipated and we had to blow away our HBase node in ZK. Upon restarting it didn't look like HBase was able to read anything. We ended up blowing out our whole HBase data directory to get everything back up and running. Now we are tying to figure out how we can use these data files to recover existing records. Is this possible and if so, how?
Thanks
