Your issue was probably that slave_hadoop and master_hadoop are not valid host names:
RFCs <http://en.wikipedia.org/wiki/Request_for_Comments> mandate that a hostname's labels may contain only the ASCII<http://en.wikipedia.org/wiki/ASCII>letters 'a' through 'z' (case-insensitive), the digits '0' through '9', and the hyphen. Hostname labels cannot begin or end with a hyphen. No other symbols, punctuation characters, or blank spaces are permitted. from http://en.wikipedia.org/wiki/Hostname -Todd On Tue, Oct 13, 2009 at 10:01 AM, Tejas Lagvankar <t...@umbc.edu> wrote: > Hey Kevin, > > You were right... > I changed all my aliases to IP addresses. It worked ! > > Thank you all again :) > > Regards, > Tejas > > > On Oct 13, 2009, at 12:41 PM, Tejas Lagvankar wrote: > > By name resolution, I assume that you mean the name mentioned in >> /etc/hosts. Yes, in the logs, the IP address appears in the beginning. >> Correct me if I'm wrong >> I will also try with using just the IP's instead of the aliases. >> >> On Oct 13, 2009, at 12:37 PM, Kevin Sweeney wrote: >> >> did you verify the name resolution? >>> >>> On Tue, Oct 13, 2009 at 4:34 PM, Tejas Lagvankar <t...@umbc.edu> wrote: >>> >>> I get the same error even if i specify the port number. I have tried with >>> port numbers 54310 as well as 9000. >>> >>> >>> Regards, >>> Tejas >>> >>> >>> On Oct 13, 2009, at 12:12 PM, Chandan Tamrakar wrote: >>> >>> I think you need to specify the port as well for following port >>> >>> <property> >>> <name>fs.default.name</name> >>> <value>hdfs://master_hadoop</value> >>> </property> >>> >>> >>> On Tue, Oct 13, 2009 at 7:17 AM, Tejas Lagvankar <t...@umbc.edu> wrote: >>> >>> Hi, >>> >>> >>> We are trying to set up a cluster (starting with 2 machines) using the >>> new >>> 0.20.1 version. >>> >>> On the master machine, just after the server starts, the name node dies >>> off >>> with the following exception: >>> >>> 2009-10-13 01:22:24,740 ERROR >>> org.apache.hadoop.hdfs.server.namenode.NameNode: java.io.IOException: >>> Incomplete HDFS URI, no host: hdfs://master_hadoop >>> at >>> >>> org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:78) >>> at >>> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1373) >>> at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66) >>> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1385) >>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:191) >>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95) >>> at org.apache.hadoop.fs.Trash.<init>(Trash.java:62) >>> at >>> >>> org.apache.hadoop.hdfs.server.namenode.NameNode.startTrashEmptier(NameNode.java:208) >>> at >>> >>> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:204) >>> at >>> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:279) >>> at >>> >>> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:956) >>> at >>> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965) >>> >>> Can anyone help ? Also can anyone send across example configuration >>> files >>> for 0.20.1 if they are different than we are using ? >>> >>> The detail log file is attached along with. >>> >>> >>> >>> >>> The configuration files are as follows: >>> >>> MASTER CONFIG >>> ------ conf/masters ------- >>> master_hadoop >>> >>> ------ conf/slaves ------- >>> master_hadoop >>> slave_hadoop >>> >>> ------ core-site.xml ------- >>> <configuration> >>> >>> <property> >>> <name>fs.default.name</name> >>> <value>hdfs://master_hadoop</value> >>> </property> >>> >>> <property> >>> <name>hadoop.tmp.dir</name> >>> <value>/opt/hadoop-0.20.1/tmp</value> >>> </property> >>> >>> ------ hdfs-site.xml ------- >>> <property> >>> <name>dfs.replication</name> >>> <value>2</value> >>> </property> >>> >>> >>> ------ mapred-site.xml ------- >>> <property> >>> <name>mapred.job.tracker</name> >>> <value>tejas_hadoop:9001</value> >>> </property> >>> >>> >>> >>> >>> >>> SLAVE CONFIG >>> ------ core-site.xml ------- >>> <property> >>> <name>hadoop.tmp.dir</name> >>> <value>/opt/hadoop-0.20.1/tmp/</value> >>> </property> >>> >>> >>> <property> >>> <name>fs.default.name</name> >>> <value>hdfs://master_hadoop</value> >>> </property> >>> >>> >>> ------ hdfs-site.xml ------- >>> <property> >>> <name>dfs.replication</name> >>> <value>2</value> >>> </property> >>> >>> ------ mapred-site.xml ------- >>> <property> >>> <name>mapred.job.tracker</name> >>> <value>tejas_hadoop:9001</value> >>> </property> >>> >>> >>> >>> Regards, >>> >>> Tejas Lagvankar >>> meette...@umbc.edu >>> www.umbc.edu/~tej2 <http://www.umbc.edu/%7Etej2> < >>> http://www.umbc.edu/%7Etej2> >>> >>> >>> >>> >>> >>> >>> >>> -- >>> Chandan Tamrakar >>> >>> Tejas Lagvankar >>> meette...@umbc.edu >>> www.umbc.edu/~tej2 <http://www.umbc.edu/%7Etej2> >>> >>> >>> >>> >>> >>> >>> >>> >> Tejas Lagvankar >> meette...@umbc.edu >> www.umbc.edu/~tej2 <http://www.umbc.edu/%7Etej2> >> >> >> >> > Tejas Lagvankar > meette...@umbc.edu > www.umbc.edu/~tej2 <http://www.umbc.edu/%7Etej2> > > > >
