Hi Yun,
Few links:
- http://blog.cloudera.com/blog/2012/06/hbase-io-hfile-input-output/
= There is a small paragraph about compactions which explain when
they are triggered.
- http://hbase.apache.org/book/regions.arch.html 9.7.6.5
You are almost right. Only thing is that HBase doesn't know when
Thanks, JM
It seems like the sole difference btwn major and minor compaction is the
number of files (to be all or just a subset of storefiles). It mentioned
very briefly in
http://hbase.apache.org/bookhttp://hbase.apache.org/book/regions.arch.htmlthat
Sometimes a minor compaction will ... promote
Hi Yun,
There is more differences.
The minor compactions are not remove the delete flags and the deleted
cells. It only merge the small files into a bigger one. Only the major
compaction (in 0.94) will deal with the delete cells. There is also
some more compaction mechanism coming in trunk with
I am more concerned with CompactionPolicy available that allows application
to manipulate a bit how compaction should go... It looks like there is
newest API in .97 version
In contrast, the major compaction is invoked in offpeak time and usually
can be assume to have resource exclusively.
There is no resource exclusivity with major compactions. It is just more
resource _intensive_ because a major compaction will rewrite all the store
files to end up with a single
Engineer
Carrier IQ, www.carrieriq.com
e-mail: vrodio...@carrieriq.com
From: Suraj Varma [svarma...@gmail.com]
Sent: Saturday, June 22, 2013 11:51 AM
To: user@hbase.apache.org
Subject: Re: difference between major and minor compactions?
In contrast
