cnn you send the content of your hostname and hosts file content? Regards
∞ Shashwat Shriparv On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <[email protected]>wrote: > Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up > correctly. > > Sent from a remote device. Please excuse any typos... > > Mike Segel > > On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <[email protected]> > wrote: > > > This is the configuration I used till now...It works, but give the > > mentioned error (although the procedure seems to return correct > > results anyway. > > I think in /etc/hosts should be also the line > > 127.0.0.1 hostname > > > > but in that case Hadoop does not start. > > > > Alberto > > > > On 14 September 2012 18:19, Shumin Wu <[email protected]> wrote: > >> Would that work for you? > >> > >> 127.0.0.1 localhost > >> 10.220.55.41 hostname > >> > >> -Shumin > >> > >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli < > >> [email protected]> wrote: > >> > >>> Hi, > >>> > >>> I've successfully installed Apache HBase on a cluster with Hadoop. > >>> It works fine, but when I try to use Pig to load some data from an > >>> HBase table I get this error: > >>> > >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot > >>> resolve the host name for /10.220.55.41 because of > >>> javax.naming.OperationNotSupportedException: DNS service refused > >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa' > >>> > >>> Pig returns in any case the correct results (actually I don't know > >>> how), but I'd like to solve this issue. > >>> > >>> I discovered that this error is due to a mistake in /etc/hosts > >>> configuration file. In fact, as reported in the documentation, I > >>> should add the line > >>> 127.0.0.1 hostname > >>> (http://hbase.apache.org/book.html#os). > >>> > >>> But if I add this entry my Hadoop cluster does not start since the > >>> datanote is bind to the local address instead to the hostname/IP > >>> address. For this reason in many tutorial it's suggested to remove > >>> such entry (e.g. > >>> > >>> > http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode > >>> ). > >>> > >>> Basically if I add that line Hadoop won't work, but if I keep the file > >>> without the loopback address I get the above error. > >>> What can I do? Which is the right configuration? > >>> > >>> > >>> Thanks, > >>> Alberto > >>> > >>> > >>> > >>> > >>> -- > >>> Alberto Cordioli > >>> > > > > > > > > -- > > Alberto Cordioli > > > -- ∞ Shashwat Shriparv
