After the adjustment, hbase:meta would still be accessed for region locations. But the request count should come down noticeably.
bq. Is there a way to inspect whether I have corruptions in the META table? Please take a look at: http://hbase.apache.org/book.html#hbck.in.depth Cheers On Sun, Jan 25, 2015 at 5:20 PM, Pun Intended <[email protected]> wrote: > Will do! Thanks you for your suggestion. I will keep an eye on the read > rate to that RegionServer, but in case it doesn't drop, do you think there > should be something else I need to look at? > > * Is there a way to inspect whether I have corruptions in the META table? > * Any other possible misconfiguration that comes to mind that I should keep > an eye for? > > best > > On Sun, Jan 25, 2015 at 8:05 PM, Ted Yu <[email protected]> wrote: > > > Suggest you lower the frequency of compacting hbase:meta > > > > Move the second command to another script. > > > > Cheers > > > > > > > > > On Jan 25, 2015, at 4:46 PM, Pun Intended <[email protected]> > > wrote: > > > > > > Hi Ted, > > > > > > I have a small script: major_compact_hbase.hbsh > > > > > > major_compact 'users' > > > major_compact 'hbase:meta' > > > exit > > > > > > > > > and a cron calls it once a day with: > > > /usr/bin/hbase shell major_compact_hbase.hbsh > > > > > > Thanks again! > > > > > > > > >> On Sun, Jan 25, 2015 at 7:38 PM, Ted Yu <[email protected]> wrote: > > >> > > >> How do you trigger major compaction manually ? > > >> > > >> Cheers > > >> > > >> > > >> > > >>>> On Jan 25, 2015, at 3:40 PM, Pun Intended <[email protected]> > > >>> wrote: > > >>> > > >>> Thank you so much for your help! > > >>> You are right, the slow region server hosts hbase:meta!!! I am using > > >> Hbase > > >>> 0.96.1.1 > > >>> > > >>> I have major compactions disabled. I run major compaction manually > > once a > > >>> day and when it dpes that besides requesting major compaction on my > > >> tables, > > >>> it also requests a major_compact 'hbase:meta'. Is that what could be > > >>> causing the issue? I did a scan on 'hbase:meta' and I see that it > > >> contains > > >>> about the same number of regions as it should - I have two tables > with > > >>> ~3000 regions each. > > >>> > > >>> Do you think I have some misconfiguration? Do I need to do some > cleanup > > >> on > > >>> the meta region? Am I hitting some Hbase bug? Or am I being dumb > > >> requesting > > >>> major compaction for the meta region daily? > > >>> > > >>> I believe on the client side I am doing things right - using scanner > > >>> caching, etc. > > >>> > > >>> Thank you so much for your help!! > > >> > > >
