On Mon, Jul 12, 2010 at 10:47 AM, Arun Ramakrishnan <[email protected]> wrote: > First regarding the DNS issue line of thought, I tried to debug after reading > http://www.mail-archive.com/[email protected]/msg16982.html > But, the hosts are not multi-homed and also I don't see logs indicating the > problem like in the post above. > > I restarted hbase after removing these new nodes that were giving problems. > It's been stable now. I am going to try adding these nodes incrementally to > see how things go.
Check your master log, it will show a message for each new region server it registers. Look at the addresses it uses. > > It's quite likely that the .meta. table blocks moved, since I reconfigured > hdfs. I am wondering what can be done to avoid this block moving problem or > recover from it. Just give hbase some time and let it figure things out ? HBase uses DFSClient (which manages finding the blocks) provided by HDFS, it doesn't depend on block locations at all. > > J-D, which problem is normal ? Just the error message or the issue of regions > reported multiple times ?. Could you give some details on how loosing the > last few edits could cause this problem. Well I was replying to Jamie, and it doesn't look like your issue. > > Also loosing last few edits could be taken care of by calling a flush before > shutting hbase down if it dosent already do it, right ? It already does it. > > Thanks > Arun
