Hi guys : Made more progress debugging my hadoop connection, but still
haven't got it working...... It looks like my VM (cloudera hadoop) won't
let me in. I find that there is no issue connecting to the name node - that
is , using hftp and 50070......
via standard HFTP as in here :
//This method works fine - connecting directly to hadoop's namenode and
querying the filesystem
public static void main1(String[] args) throws Exception
{
String uri = "hftp://155.37.101.76:50070/";;
System.out.println( "uri: " + uri );
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get( URI.create( uri ), conf );
fs.printStatistics();
}
But unfortunately, I can't get into hdfs ..... Any thoughts on this ? I am
modifying the uri to access port 8020
which is what is in my core-site.xml .
// This fails, resulting (trys to connect over and over again, eventually
gives up printing "already tried to connect 20 times"....)
public static void main(String[] args)
{
try {
String uri = "hdfs://155.37.101.76:8020/";
System.out.println( "uri: " + uri );
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get( URI.create( uri ), conf );
fs.printStatistics();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
The error message is :
11/10/28 19:03:38 INFO ipc.Client: Retrying connect to server: /
155.37.101.76:8020. Already tried 0 time(s).
11/10/28 19:03:39 INFO ipc.Client: Retrying connect to server: /
155.37.101.76:8020. Already tried 1 time(s).
11/10/28 19:03:40 INFO ipc.Client: Retrying connect to server: /
155.37.101.76:8020. Already tried 2 time(s).
11/10/28 19:03:41 INFO ipc.Client: Retrying connect to server: /
155.37.101.76:8020. Already tried 3 time(s).
Any thoughts on this would be *really* be appreciated ... Thanks guys.
