Hi there- Just taking a stab at something...
http://hbase.apache.org/book.html#disable.splitting ... what is your compaction interval? Is it the default? On 7/18/11 8:21 PM, "[email protected]" <[email protected]> wrote: > > >Hi there, >HBase read performance works fine in most of the time, >but it took a very long time (over 500 seconds) yesterday while scan a few >records(it takes 2 seconds while HBase is normal) >I don't know how to do at that time; it lasted about 1 hour long, HBase >return to normal status. >So, my question is that any log or tool I can use it to know what's wrong >with HBase at that time. >I am afraid that compaction would do that great impact on read/write >performance. If so, any tunning I can do. >thank you. > >Our cluster with 20 machines >Hadoop 20 machines >Zookeeper 3 >RegionServer 10 >Hadoop version hadoop-0.20.2-cdh3u0 >HBase version hbase-0.90.1-cdh3u0 > > > >Fleming Chiu(邱宏明) >Ext: 707-2260 >Be Veg, Go Green, Save the Planet! > >-------------------------------------------------------------------------- >- > TSMC PROPERTY > > This email communication (and any attachments) is proprietary >information > for the sole use of its > > intended recipient. Any unauthorized review, use or distribution by >anyone > other than the intended > > recipient is strictly prohibited. If you are not the intended >recipient, > please notify the sender by > > replying to this email, and then delete this email and any copies of it > > immediately. Thank you. > > >-------------------------------------------------------------------------- >- > > >
