Hi Vimal, Are those logs into HBase logs? Or into HDFS logs? Sound like you have some HDFS issues (slow disks, or running on VM, etc.)
JM 2014-01-31 Vimal Jain <[email protected]>: > Hi, > I have set up hbase in pseudo distributed mode. > I keep on getting below exceptions in data node log. > Is it a problem ? > > ( Hadoop version - 1.1.2 , Hbase version - 0.94.7 ) > > Please help. > > > java.net.SocketTimeoutException: 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=/ > 192.168.20.30:38188] > at > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > at > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:159) > at > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:198) > at > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendChunks(BlockSender.java:392) > at > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:490) > at > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:202) > at > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:104) > at java.lang.Thread.run(Thread.java:662) > > 2014-01-31 00:10:28,951 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.net.SocketTimeoutException: 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=/ > 192.168.20.30:38188] > at > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > at > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:159) > at > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:198) > at > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendChunks(BlockSender.java:392) > at > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:490) > at > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:202) > at > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:104) > at java.lang.Thread.run(Thread.java:662) > > -- > Thanks and Regards, > Vimal Jain >
