Hi Ted, The region server hosting hbase:meta only has the meta region on it so it has 1 region while other region servers can have more than 100 regions on them. I didn't notice anything interesting in the logs in my opinion. Is there anything in particular I should watch out for? The hbase:meta table was major compacted yesterday and we're still experiencing the issue.
Thanks for the quick response, Tim On Mon, Nov 28, 2016 at 5:45 AM, Ted Yu <ted...@yahoo.com.invalid> wrote: > Does the region server hosting hbase:meta have roughly the same number of > regions as the other servers ? > Did you find anything interesting in the server log (where hbase:meta is > hosted) ? > Have you tried major compacting the hbase:meta table ? > In 1.2, DEFAULT_HBASE_META_VERSIONS is still 10. See HBASE-16832 > > > On Sunday, November 27, 2016 6:53 PM, Timothy Brown < > t...@siftscience.com> wrote: > > > Hi Everyone, > > I apologize for starting an additional thread about this but I wasn't > subscribed to the users mailing list when I sent the original and can't > figure out how to respond to the original :( > > Original Message: > > We are seeing about 80% CPU utilization on the Region Server that solely > serves the meta table while other region servers typically have under 50% > CPU utilization. Is this expected? > > Here's some more info about our cluster: > HBase version 1.2 > Number of regions: 72 > Number of tables: 97 > Approx. requests per second to meta region server: 3k > Approx. requests per second to entire HBase cluster: 90k > > Additional info: > > > From Storefile Metrics: > Stores Num: 1 > Storefiles: 1 > Storefile Size: 30m > Uncompressed Storefile Size: 30m > Index Size: 459k > > > I/O for the region server with only meta on it: > 48M bytes in > 5.9B bytes out > > I used the debug dump on the region server's UI but it was too large > for paste bin so here's a portion of it: http://pastebin.com/nkYhEceE > > > Thanks for the help, > > Tim > > > >
