Hi Jay, Some questions for you:
- Does the hadoop client itself work from that same machine? - Are you actually able to run the hadoop example jar (in other words, your setup is valid otherwise)? - Is port 8020 actually available? (you can telnet or nc to it?) - What does jps show on the namenode? Thanks, Tom On Fri, Oct 28, 2011 at 4:04 PM, Jay Vyas <[email protected]> wrote: > 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. >
