hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ted Tuttle <...@mentacapital.com>
Subject RE: state-of-the-art method for merging regions on v0.94
Date Thu, 28 Aug 2014 18:43:54 GMT
Yes, we run 0.94.

Regarding your suggestion of copying data: what method/tools would you suggest for this?

-----Original Message-----
From: Jean-Marc Spaggiari [mailto:jean-marc@spaggiari.org] 
Sent: Thursday, August 28, 2014 11:26 AM
To: user
Subject: Re: state-of-the-art method for merging regions on v0.94

Yep, did it ;) (20:1 reduction, about 10K regions) You really need to understand what you
are doing when doing that.

Off line merge will need some downtimes and depending on the version you use might have some
issues. Can still find work arround, but again, you need to know.

Another option is to copy your data into another table where regions are bigger...

What HBase version do you run? 0.94.?


2014-08-28 14:19 GMT-04:00 Ted Tuttle <ted@mentacapital.com>:

> Hello-
> We recently realized our region size is 1G and need to increase it to 
> get our region count under control.  I've done some research on 
> merging regions and have come away confused.
> There is the ops handbook:
> http://hbase.apache.org/book/ops.regionmgt.html
> And then there is this horror story:
> http://metabroadcast.com/blog/so-you-broke-hbase
> Is there someone out there that has done a large scale (i.e. 10:1 
> reduction on 10k's of regions) merge successfully on HBase 0.94?  If 
> so, how did you do it?
> Thanks,
> Ted
View raw message