Please find my reply inline.
On Mon, Jul 28, 2014 at 6:09 PM, Stack <[email protected]> wrote: > On Mon, Jul 28, 2014 at 5:45 PM, anil gupta <[email protected]> wrote: > > > Hi Stack, > > > > I basically did full table scan for hbase:meta by running this(since > > cluster has 2-3 regions only): scan 'hbase:meta', {RAW => true, VERSIONS > => > > 10} > > Output of above query shows rows for "hbase:namespace" and "dummy" table. > > So, it seems like hbase:meta doesn't have any old data. > > > > > Yeah. Check size of the hbase:meta region. If small, yeah, may not have > the above. If you look around in hdfs, you see an old .META. dir? > > Anil: Yes, it looks like this dir "/hbase/.META." has data of meta table before upgrade to 0.98. Are there any non-backward compatible changes in META? Is it possible to just import the HFile of 0.94 in hbase:meta table? It seems like directory structure under hdfs has changes in 0.98. I am unable to find directories for a table "dummy" i created in 0.98. > > > > Our sysadmin team is still trying to locate all the logs. However, i > > remember one error that i resolved. I was related to "hbase.versions" > file. > > It was some complaint about Protbouf version. I deleted hbase.versions > file > > and then HBase came up. > > > Hmm. So, it probably thought this a new install and just created the new > layout. Is the old 0.94 data is adjacent to the new layout? > Anil: Yes, that's what i feel. The upgrade happened as it was a fresh install. Does it seems like a bug in upgrade? > > > > > I'll update this email once i get more details > > about error logs. > > > > Here are the steps we followed to migrate: > > 1. Ran parcel update of CDH > > 2. Restarted HBase > > 3. ShutDown HBAse > > 4. Ran "hbase upgrade -execute" > > > > > > After reading the upgrade steps, It seems "hbase upgrade -execute" should > > have been taken before Restarting HBase? > > > > Yeah. It does the migrations. > > St.Ack > -- Thanks & Regards, Anil Gupta
