If scan is working, do 'scan ".META."'. There are three columns: info:regioninfo, info:serverstartcode, and info:server.
What do you see for info:server? New addresses or the old? On startup, hbase should be judging the content of .META. as sour and reassigning regions to the servers that have just registered; i.e. those of the new addresses. St.Ack On Fri, Feb 27, 2009 at 7:15 PM, Liu Yan <[email protected]> wrote: > hi, > > We have a 4-node cluster Hadoop 0.19.0 and HBase 0.19.0. We run NameNode > and > RegionServer on the same server and created a bunch of tables on HBase. > > Now we want to use another (more powerful) machine to replace the old > master. Here is what we did: > > 1) Shutdown HBase and Hadoop > 2) Copy all the Hadoop related files from the old master to the new master. > 3) Re-configure the Hadoop and HBase so all (including the master and > clients) are now pointing to the new master. > 4) Start the Hadoop cluster. (This seems fine). > 5) Start the HBase cluster. (This seems fine too). > > Then when we try to do a "count" in HBase shell, (e.g. count 'table_name'), > we hit the following problem: > > 09/02/27 21:53:04 INFO ipc.HBaseClass: Retrying connect to server: / > 10.249.190.85:60020. Already tried 0 time(s). > 09/02/27 21:53:05 INFO ipc.HBaseClass: Retrying connect to server: / > 10.249.190.85:60020. Already tried 1 time(s). > 09/02/27 21:53:06 INFO ipc.HBaseClass: Retrying connect to server: / > 10.249.190.85:60020. Already tried 2 time(s). > 09/02/27 21:53:06 INFO ipc.HbaseRPC: Server at /10.249.190.85:60020 not > available yet, Zzzzz... > 09/02/27 21:53:06 INFO ipc.HbaseRPC: Server at /10.249.190.85:60020 could > not be reached after 1 tries, giving up. > 09/02/27 21:53:09 INFO ipc.HBaseClass: Retrying connect to server: / > 10.249.190.85:60020. Already tried 0 time(s). > 09/02/27 21:53:10 INFO ipc.HBaseClass: Retrying connect to server: / > 10.249.190.85:60020. Already tried 1 time(s). > 09/02/27 21:53:11 INFO ipc.HBaseClass: Retrying connect to server: / > 10.249.190.85:60020. Already tried 2 time(s). > > The IP address showing here is actually the old master's IP address instead > of the new one's. > > We tried "list" and "scan" commands in the HBase shell, both of them are > working good. Just the "count" reported the above error. > > What's the problem here? > > Thanks, > Yan >
