make 127.0.1.1 to 127.0.0.1 that will solve lot of problems On Thu, Dec 15, 2011 at 11:54 PM, Jean-Daniel Cryans <[email protected]>wrote:
> Hi, > > A few notes: > > Remove the 127.0.1.1 lines, they usually mess things up. > > The hbase.master configuration has been removed from the HBase code > more than 2 years ago, you can remove it too. > > Setting hbase.master.dns.interface alone without > hbase.master.dns.nameserver doesn't do anything if I remember > correctly, also I'm pretty sure you don't have an interface named > "master", it's more likely "eth0" and whatnot. > > I don't know if this will fix your DNS resolution, but at least it > will clean up a bit :) > > J-D > > 2011/12/15 exp <[email protected]>: > > hi all, > > > > I am installing hbase on a small cluster of 3 machines. The RegionServer > unable connect to the master. This is the log: > > > > > > 2011-12-15 13:46:43,415 INFO > org.apache.hadoop.hbase.regionserver.HRegionServer: Attempting connect to > Master server at localhost:60000 > > 2011-12-15 13:47:43,473 WARN > org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to connect to > master. Retrying. Error was: > > java.net.ConnectException: Connection refused > > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > > at > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567) > > at > org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) > > ...... > > > > > > > > > > The lod shows this RegionServer connect to the master at a wrong > address(localhost:60000). > > > > > > as far as I know, the RegionServer use ZooKeeper to find out the > master's address. so I check the HMaster's log. > > > > > > this is what i find out: > > ... > > 2011-12-15 13:44:34,946 INFO > org.apache.hadoop.hbase.master.metrics.MasterMetrics: Initialized > > 2011-12-15 13:44:35,010 INFO > org.apache.hadoop.hbase.master.ActiveMasterManager: Master=localhost:60000 > > 2011-12-15 13:44:37,476 INFO org.apache.zookeeper.ZooKeeper: Initiating > client connection, connectString=master:2181,slave2:2181,slave > > 1:2181 sessionTimeout=180000 watcher=hconnection > > ... > > > > > > The HMaster starts at localhost:60000! I think the HMaster should start > at master:60000. "master" is the hosts where JobTracker runs. > > > > > > I am using hbase 0.90.3 and zookeeper 3.3.4. This is the source code > where the HMaster get the address: > > > > > > HServerAddress a = new HServerAddress(getMyAddress(this.conf)); > > int numHandlers = conf.getInt("hbase.regionserver.handler.count", 10); > > this.rpcServer = HBaseRPC.getServer(this, > > new Class<?>[]{HMasterInterface.class, > HMasterRegionInterface.class}, > > a.getBindAddress(), a.getPort(), > > numHandlers, > > 0, // we dont use high priority handlers in master > > false, conf, > > 0); // this is a DNC w/o high priority handlers > > this.address = new HServerAddress(rpcServer.getListenerAddress()); > > > > > > private static String getMyAddress(final Configuration c) > > throws UnknownHostException { > > // Find out our address up in DNS. > > String s = > DNS.getDefaultHost(c.get("hbase.master.dns.interface","default"), > > c.get("hbase.master.dns.nameserver","default")); > > s += ":" + c.get(HConstants.MASTER_PORT, > > Integer.toString(HConstants.DEFAULT_MASTER_PORT)); > > return s; > > } > > > > > > > > > > As you can see in the code, the HMaster find its address in DNS! I have > no idea how to setup the hbase to let the HMaster find the correct address. > > > > > > this is my hbase-site.xml: > > > > > > <configuration> > > <property> > > <name>hbase.rootdir</name> > > <value>hdfs://master:9000/user/hadoop/hbase</value> > > </property> > > <property> > > <name>hbase.cluster.distributed</name> > > <value>true</value> > > </property> > > > > > > <property> > > <name>hbase.master.dns.interface</name> > > <value>master</value> > > </property> > > > > > > <property> > > <name>zookeeper.znode.master</name> > > <value>master</value> > > </property> > > > > > > <property> > > <name>hbase.master</name> > > <value>master:60000</value> > > </property> > > </configuration> > > > > > > and all the three machines are virtual machine with Ubuntu 11.04 > > > > > > this is the /etc/hosts : > > master: > > 127.0.0.1 localhost ubt > > 127.0.0.1 ubt ubuntu > > 10.66.201.243 master > > 10.66.201.244 slave1 > > 10.66.201.245 slave2 > > > > > > slave1: > > 127.0.0.1 localhost > > 127.0.1.1 slave1 ubuntu > > 10.66.201.243 master > > 10.66.201.244 slave1 > > 10.66.201.245 slave2 > > > > > > slave2: > > 127.0.0.1 localhost > > 127.0.1.1 slave2 ubuntu > > 10.66.201.243 master > > 10.66.201.244 slave1 > > 10.66.201.245 slave2 > > > > > > any idea on this problems? > > > > > > > > > > > > > > cheers > > > > > > exception > -- Shashwat Shriparv 09900059620 09663531241 <iframe src=" http://rcm.amazon.com/e/cm?t=shriparv-20&o=1&p=48&l=ur1&category=kindlerotating&f=ifr"; width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>
