Hi, I am beginning with Hadoop. I have been experiencing a trouble of waiting a long time before I can add (put) my input data to HDFS in Hadoop v0.20.2.
I followed configuration step and format the HDFS. I am able to create new directory but when I am try to add input data set to DFS, I am stuck by a very common error: "java.io.IOException: File ... could only be replicated to 0 nodes, instead of 1" then I use command "hadoop dfsadmin -report", and it says there is 0 available datanode. Usually, I wait for another 5 or 10 minutes and then datanode is ready and I can continue to put on the data file. So is there a way that I could avoid waiting for the 5 minutes? I mean it happens also in the pseudo-cluster mode. Thanks. -- best wishes Hao Lin (林昊) Research Assistant School of Electrcial & Computer Eng Purdue University, West Lafayette, IN Personal Homepage: http://web.ics.purdue.edu/~lin116/
