Thanks confirmation, Kevin. I logged HBASE-7340 so that user doesn't have to script for compaction.
On Wed, Dec 12, 2012 at 12:30 PM, Kevin O'dell <[email protected]>wrote: > Ted, > > Yes, it is all done through scripting. > > On Wed, Dec 12, 2012 at 3:22 PM, Ted Yu <[email protected]> wrote: > > > bq. they will major compact any region the balancer has moved. > > > > Interesting. Do they achieve this through scripting ? > > > > I think HBase can perform some follow-on action after region movement. > > > > Cheers > > > > On Wed, Dec 12, 2012 at 12:19 PM, Kevin O'dell <[email protected] > > >wrote: > > > > > Otis, > > > > > > I think it depends on your use case. Some use cases are extremely > > > dependent on locality and latency, so they will major compact any > region > > > the balancer has moved. Some people follow the HFile count and will > > > trigger a major when there are x amount of files. Others will just > > follow > > > best practices and do it daily. Some do very little writes and only > > > compact once a week. > > > > > > On Wed, Dec 12, 2012 at 3:15 PM, Otis Gospodnetic < > > > [email protected]> wrote: > > > > > > > Hello, > > > > > > > > What are the main metrics/signals people use/look at to say "OK, I > > really > > > > need to do a major compaction now", other than "hm, performance is > not > > > > good, let's try major compaction tonight"? > > > > > > > > Thanks, > > > > Otis > > > > -- > > > > HBASE Performance Monitoring - http://sematext.com/spm/index.html > > > > Search Analytics - http://sematext.com/search-analytics/index.html > > > > > > > > > > > > > > > > -- > > > Kevin O'Dell > > > Customer Operations Engineer, Cloudera > > > > > > > > > -- > Kevin O'Dell > Customer Operations Engineer, Cloudera >
