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
