Hi everyone, @jwhitmore Thank's for your response, you are right, when exposing 50010, Talend For Big Data works (with component tHDFSConnect and cie) But, even if we exposing the 50010 port, there are always the same error when using Talend ESB with Camel Framework, see below : [WARN ]: org.apache.hadoop.hdfs.DFSClient - DataStreamer Exceptionorg.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/Ztest.csv.opened could only be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and 1 node(s) are excluded in this operation.at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1641)at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3198)at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3122) I've design a Scala program, and i'm facing the same issue : 15:59:22.386 [main] ERROR org.apache.hadoop.hdfs.DFSClient - Failed to close inode 500495org.apache.hadoop.ipc.RemoteException: File /user/hdfs/testscala2.txt could only be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and 1 node(s) are excluded in this operation.at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1641)at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3198)at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3122) Any idea ? Thank's in advance. Best regards, Mickaël. ... View more