Sounds like a bug? Can we see some logs from that region server and see if we can fix it?
J-D 2010/3/7 <[email protected]>: > Hi, > > I found one of my region server being like a plant(just breath and can't do > anything). > HBase still get its heartbeats, actually it is a dead node. > Any ways we can prevent from it? > Thanks > > > Fleming Chiu(邱宏明) > 707-6128 > [email protected] > 週一無肉日吃素救地球(Meat Free Monday Taiwan) > > > > > > [email protected] > m To: > [email protected] > Sent by: cc: (bcc: Y_823910/TSMC) > [email protected] Subject: Re: > RetriesExhaustedException > m > > > 2010/03/06 02:22 > AM > Please respond to > hbase-user > > > > > > > It will, if the region server tells the client that the region moved > or was split, it throws a NotServingRegionException which the client > understands and then asks the .META. region for the new location. So > in each retry it does 2 round trips. Please read > http://wiki.apache.org/hadoop/Hbase/HbaseArchitecture#client > > I'm not sure where this ClosedByInterruptException is coming from... > It's not something I've seen before in our client. > > J-D > > 2010/3/4 <[email protected]>: >> Hi, >> In order to prevent from visiting META too often. >> I keep the HTable for a while. >> Hbase client won't try to get the lastest META while it can't >> reach the data, only retry 10 times, right? >> Region information may change. >> So if we keep the META infomation too long, such exception >> will happen very often. Is it correct? >> >> >> Fri Mar 05 13:44:00 CST 2010 >> org.apache.hadoop.hbase.client.RetriesExhaustedException: >> Trying to contact region server 10.81.47.42:60020 >> for region table1,,1264592014593, row 'HK.001', but failed after 10 >> attempts. >> Exceptions: >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> java.nio.channels.ClosedByInterruptException >> >> >> >> >> Fleming Chiu(邱宏明) >> 707-6128 >> [email protected] >> 週一無肉日吃素救地球(Meat Free Monday Taiwan) >> >> >> > --------------------------------------------------------------------------- >> 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. >> > --------------------------------------------------------------------------- >> >> >> >> > > > > > --------------------------------------------------------------------------- > 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. > --------------------------------------------------------------------------- > > > >
