我在hdfs（cloudera2.0.0-cdh4.2.0）上附加文件时遇到错误。导致错误的用例是：
在文件系统（distributedfilesystem）上创建文件。好 啊
追加先前创建的文件。错误 OutputStream stream = FileSystem.append(filePath); stream.write(fileContents); 然后抛出错误： Exception in thread "main" java.io.IOException: Failed to add a datanode. User may turn off this feature by setting dfs.client.block.write.replace-datanode-on- failure.policy in configuration, where the current policy is DEFAULT. (Nodes: current=[host1:50010, host2:50010], original=[host1:50010, host2:50010]) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.findNewDatanode(DFSOutputStream.java:792) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.addDatanode2ExistingPipeline(DFSOutputStream.java:852) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.setupPipelineForAppendOrRecovery(DFSOutputStream.java:958) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:469) 一些相关的hdfs配置： dfs.replication 设置为2 dfs.client.block.write.replace-datanode-on-failure.policy 设置为真 dfs.client.block.write.replace-datanode-on-failure 设置为默认值
有什么想法吗？谢谢！