-Re: Offline merge tool question
Stack 2013-08-14, 05:32
On Tue, Aug 13, 2013 at 5:17 PM, Bryan Beaudreault <[EMAIL PROTECTED]
> I'm running cdh4.2 hbase 0.94.2, and am looking to merge some regions in a
> table. Looking at Merge.java, it seems to require that the entire cluster
> be offline. However, I also notice an HMerge.java which doesn't appear to
> do the same validation.
> Two questions:
> 1) Why does Merge.java validate the entire cluster is down, as opposed to
> just the single table being disabled?
It is dumb/simple/old.
> 2) Could I write my own tool that uses HMerge, so as to merge regions in
> the disabled table without bringing the whole cluster down?
Yes. You can't do much harm if table is offline.