Please submit user queries to the appropriate user mailing list and not development ones.
Moving this question to the hdfs-user list at hdfs-user@hadoop.apache.org On Sat, Jan 29, 2011 at 3:01 PM, James Ram <hadoo...@gmail.com> wrote: > Hi, > > I am new to this group. I tried to copy a 1GB file to the HDFS. > While copying the data it showed the below error. Anyhow it copied the data > successfully. I am curious to know why this warning came up saying that my > datanodes are bad. All the datanodes are alive and had more than 2GB space. > > 11/01/29 13:29:16 WARN hdfs.DFSClient: DataStreamer Exception: > java.io.IOException: An existing connection was forcibly closed by the > remote host > at sun.nio.ch.SocketDispatcher.write0(Native Method) > at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:33) > at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:104) > at sun.nio.ch.IOUtil.write(IOUtil.java:75) > at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:334) > at > org.apache.hadoop.net.SocketOutputStream$Writer.performIO(SocketOutputStream.java:55) > at > org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142) > at > org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:146) > at > org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:107) > at java.io.BufferedOutputStream.write(BufferedOutputStream.java:105) > at java.io.DataOutputStream.write(DataOutputStream.java:90) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2314) > > 11/01/29 13:29:16 WARN hdfs.DFSClient: Error Recovery for block > blk_-6118816796046500135_1043 bad datanode[0] 160.110.74.37:50010 > 11/01/29 13:29:16 WARN hdfs.DFSClient: Error Recovery for block > blk_-6118816796046500135_1043 in pipeline 160.110.74.37:50010, > 160.110.74.36:50010, 160.110.74.39:50010: bad datanode 160.110.74.37:50010 > 11/01/29 13:29:18 WARN hdfs.DFSClient: Error Recovery for block > blk_-6118816796046500135_1043 failed because recovery from primary datanode > 160.110.74.36:50010 failed 1 times. Pipeline was 160.110.74.37:50010, > 160.110.74.36:50010, 160.110.74.39:50010. Will retry... > 11/01/29 13:29:18 WARN hdfs.DFSClient: Error Recovery for block > blk_-6118816796046500135_1043 bad datanode[0] 160.110.74.37:50010 > 11/01/29 13:29:18 WARN hdfs.DFSClient: Error Recovery for block > blk_-6118816796046500135_1043 in pipeline 160.110.74.37:50010, > 160.110.74.36:50010, 160.110.74.39:50010: bad datanode 160.110.74.37:50010 > > With Regards > RJ > -- Harsh J www.harshj.com
