Thank you, sir. Do you happen to know if hbase swtich from 0.89 CDH3b3 to 0.90.1 is going to be file-level compatible? I.e. do i have to export and re-import data in between?
Thank you. On Wed, Feb 23, 2011 at 12:05 PM, Ryan Rawson <[email protected]> wrote: > You should consider upgrading to hbase 0.90.1, a lot of these kinds of > issues were fixed. > > -ryan > > On Wed, Feb 23, 2011 at 12:02 PM, Dmitriy Lyubimov <[email protected]> > wrote: > > Hi all, > > > > from time to time we come to a sitation where .META. table seems to be > stuck > > in some corrupted state. > > In particular, attempts to create more tables cause > > > > ERROR: org.apache.hadoop.hbase.client.NoServerForRegionException: No > server > > address listed in .META. for region > > LEAD_DATA,,1298484698945.8226d7a44286402e80c9b991d2c00cc3. > > > > The server is not even under any load worth mentioning at the moment. > > > > Table manipulations are failing with both shell and HBAdmin, so it's not > an > > isolated shell issue (there seems to be similar issue related to shell > only, > > 872, but it's pretty old one). > > > > I scanned for solutions for this particular error, and it seems to be > > revolving around flushing .META. , major compact it and restarting the > > master(s). > > > > In our case, only restarting the master helped to remove the condition. > > > > logs seem to be stacktrace-free. > > > > My questions are -- > > > > -- is there a way to figure out what causes those inconsistences in > .META.? > > -- is there a way to fix that other than restarting master? Is restarting > > master in this case implies a downtime? > > > > Thanks. > > -Dmitriy > > >
