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 >
