[ https://issues.apache.org/jira/browse/HDFS-9?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Harsh J resolved HDFS-9. ------------------------ Resolution: Incomplete This could've very well been a transient issue. Lets open a new JIRA if this is too frequent. This one has gone stale over the versions. > distcp job failed > ----------------- > > Key: HDFS-9 > URL: https://issues.apache.org/jira/browse/HDFS-9 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Runping Qi > > I was running distcp to copy data from one dfs to another. > The job failed with the following exception in the mappers: > java.net.SocketException: Connection reset > at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96) > at java.net.SocketOutputStream.write(SocketOutputStream.java:136) > at > java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65) > at java.io.BufferedOutputStream.write(BufferedOutputStream.java:109) > at java.io.DataOutputStream.write(DataOutputStream.java:90) > at > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.endBlock(DFSClient.java:1633) > at > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.close(DFSClient.java:1720) > at > org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:49) > at > org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:64) > at > org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.copy(CopyFiles.java:305) > at > org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.map(CopyFiles.java:352) > at > org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.map(CopyFiles.java:217) > at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:195) > at > org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1750) > I examined the data node logs of the target dfs. I saw a lot of exceptions > like: > 2007-10-12 15:04:09,109 ERROR org.apache.hadoop.dfs.DataNode: DataXceiver: > java.io.EOFException > at java.io.DataInputStream.readInt(DataInputStream.java:375) > at > org.apache.hadoop.dfs.DataNode$BlockReceiver.receiveBlock(DataNode.java:1365) > at > org.apache.hadoop.dfs.DataNode$DataXceiver.writeBlock(DataNode.java:897) > at org.apache.hadoop.dfs.DataNode$DataXceiver.run(DataNode.java:763) > at java.lang.Thread.run(Thread.java:619) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira