HI Jean, Thanks for your reply. I have total 8 GB memory and distribution is as follows:-
Region server - 2 GB Master,Namenode,Datanode,Secondary Namenode,Zookepeer - 1 GB OS - 1 GB Please let me know if you need more information. On Tue, Oct 22, 2013 at 8:15 PM, Jean-Marc Spaggiari < [email protected]> wrote: > Hi Vimal, > > What are your settings? Memory of the host, and memory allocated for the > different HBase services? > > Thanks, > > JM > > > 2013/10/22 Vimal Jain <[email protected]> > > > Hi, > > I am running in Hbase in pseudo distributed mode. ( Hadoop version - > 1.1.2 > > , Hbase version - 0.94.7 ) > > I am getting few exceptions in both hadoop ( namenode , datanode) logs > and > > hbase(region server). > > When i search for these exceptions on google , i concluded that problem > is > > mainly due to large number of full GC in region server process. > > > > I used jstat and found that there are total of 950 full GCs in span of 4 > > days for region server process.Is this ok? > > > > I am totally confused by number of exceptions i am getting. > > Also i get below exceptions intermittently. > > > > > > Region server:- > > > > 2013-10-22 12:00:26,627 WARN org.apache.hadoop.ipc.HBaseServer: > > (responseTooSlow): > > {"processingtimems":15312,"call":"next(-6681408251916104762, 1000), rpc > > version=1, client version=29, methodsFingerPrint=-1368823753","client":" > > 192.168.20.31:48270 > > > > > ","starttimems":1382423411293,"queuetimems":0,"class":"HRegionServer","responsesize":4808556,"method":"next"} > > 2013-10-22 12:06:17,606 WARN org.apache.hadoop.ipc.HBaseServer: > > (operationTooSlow): {"processingtimems":14759,"client":" > > 192.168.20.31:48247 > > > > > ","timeRange":[0,9223372036854775807],"starttimems":1382423762845,"responsesize":61,"class":"HRegionServer","table":"event_data","cacheBlocks":true,"families":{"ginfo":["netGainPool"]},"row":"1629657","queuetimems":0,"method":"get","totalColumns":1,"maxVersions":1} > > > > 2013-10-18 10:37:45,008 WARN org.apache.hadoop.hdfs.DFSClient: > DataStreamer > > Exception: org.apache.hadoop.ipc.RemoteException: java.io.IOException: > File > > > > > /hbase/event_data/4c3765c51911d6c67037a983d205a010/.tmp/bfaf8df33d5b4068825e3664d3e4b2b0 > > could only be replicated to 0 nodes, instead of 1 > > at > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1639) > > > > Name node :- > > java.io.IOException: File > > > > > /hbase/event_data/433b61f2a4ebff8f2e4b89890508a3b7/.tmp/99797a61a8f7471cb6df8f7b95f18e9e > > could only be replicated to 0 nodes, instead of 1 > > > > java.io.IOException: Got blockReceived message from unregistered or dead > > node blk_-2949905629769882833_52274 > > > > Data node :- > > 480000 millis timeout while waiting for channel to be ready for write. > ch : > > java.nio.channels.SocketChannel[connected local=/192.168.20.30:50010 > > remote=/ > > 192.168.20.30:36188] > > > > ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: > > DatanodeRegistration( > > 192.168.20.30:50010, > > storageID=DS-1816106352-192.168.20.30-50010-1369314076237, > infoPort=50075, > > ipcPort=50020):DataXceiver > > java.io.EOFException: while trying to read 39309 bytes > > > > > > -- > > Thanks and Regards, > > Vimal Jain > > > -- Thanks and Regards, Vimal Jain
