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POHbase Regions server is not able to communicate with HMaster
 

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  1. POHbase Regions server is not able to communicate with HMaster
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    <p>I am not able to setup the hbase in distributed mode. It works fine when i setup it on one machine(standalone mode). My Zookeeper, hmaster and region server starts properly.<br> But when i go to hbase shell and look for the status. It shows me 0 region server. I am attaching my logs of regions server. Plus the host files of my master(namenode) and slave(datanode). I have tried every P&amp;C which are given on stackoverflow for changing the host file, but didn't work for me.</p> <pre><code> 2013-06-24 15:03:45,844 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server naresh-pc/192.168.0.108:2181. Will not attempt to authenticate using SASL (unknown error) 2013-06-24 15:03:45,845 WARN org.apache.zookeeper.ClientCnxn: Session 0x13f75807d960001 for server null, unexpected error, closing socket connection and attempting to reconnect java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:692) at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068) Slave /etc/hosts : 127.0.0.1 localhost 127.0.1.1 ubuntu-pc #ip for hadoop 192.168.0.108 master 192.168.0.126 slave # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters Master /etc/hosts : 127.0.0.1 localhost 127.0.1.1 naresh-pc #ip for hadoop 192.168.0.108 master 192.168.0.126 slave # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters </code></pre> <p>hbase-site.xml : </p> <pre><code> &lt;configuration&gt; &lt;property&gt; &lt;name&gt;hbase.master&lt;/name&gt; &lt;value&gt;master:60000&lt;/value&gt; &lt;description&gt;The host and port that the HBase master runs at. A value of 'local' runs the master and a regionserver in a single process. &lt;/description&gt; &lt;/property&gt; &lt;property&gt; &lt;name&gt;hbase.rootdir&lt;/name&gt; &lt;value&gt;hdfs://master:54310/hbase&lt;/value&gt; &lt;description&gt;The directory shared by region servers.&lt;/description&gt; &lt;/property&gt; &lt;property&gt; &lt;name&gt;hbase.cluster.distributed&lt;/name&gt; &lt;value&gt;true&lt;/value&gt; &lt;description&gt;The mode the cluster will be in. Possible values are false: standalone and pseudo-distributed setups with managed Zookeeper true: fully-distributed with unmanaged Zookeeper Quorum (see hbase-env.sh) &lt;/description&gt; &lt;/property&gt; &lt;property&gt; &lt;name&gt;hbase.zookeeper.property.clientPort&lt;/name&gt; &lt;value&gt;2181&lt;/value&gt; &lt;description&gt;Property from ZooKeeper's config zoo.cfg. The port at which the clients will connect. &lt;/description&gt; &lt;/property&gt; &lt;property&gt; &lt;name&gt;hbase.zookeeper.quorum&lt;/name&gt; &lt;value&gt;master&lt;/value&gt; &lt;description&gt;Comma separated list of servers in the ZooKeeper Quorum. For example, "host1.mydomain.com,host2.mydomain.com". By default this is set to localhost for local and pseudo-distributed modes of operation. For a fully-distributed setup, this should be set to a full list of ZooKeeper quorum servers. If HBASE_MANAGES_ZK is set in hbase-env.sh this is the list of servers which we will start/stop ZooKeeper on. &lt;/description&gt; &lt;/property&gt; &lt;/configuration&gt; Zookeeper log: 2013-06-28 18:22:26,781 WARN org.apache.zookeeper.server.NIOServerCnxn: caught end of stream exception EndOfStreamException: Unable to read additional data from client sessionid 0x13f8ac0b91b0002, likely client has closed socket at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:220) at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208) at java.lang.Thread.run(Thread.java:722) 2013-06-28 18:22:26,858 INFO org.apache.zookeeper.server.NIOServerCnxn: Closed socket connection for client /192.168.0.108:57447 which had sessionid 0x13f8ac0b91b0002 2013-06-28 18:25:21,001 INFO org.apache.zookeeper.server.ZooKeeperServer: Expiring session 0x13f8ac0b91b0002, timeout of 180000ms exceeded 2013-06-28 18:25:21,002 INFO org.apache.zookeeper.server.PrepRequestProcessor: Processed session termination for sessionid: 0x13f8ac0b91b0002 Master Log: 2013-06-28 18:22:41,932 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 1502022 ms 2013-06-28 18:22:43,457 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 1503547 ms </code></pre>
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    1. COThank you. Also, showing the HM and ZK will be helpful.
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    2. CO@Tariq I am using the default zookeeper which is maintain by hbase. Also, the hbase-site.xml is same in my case for both master as well as region server. I have posted the same above.
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    3. COi did changes which dino.keco suggested. But still i am getting this error in region server. 2013-06-27 16:32:52,464 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Attempting connect to Master server at naresh-pc,60000,1372328400175 2013-06-27 16:33:52,539 WARN org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to connect to master. Retrying. Error was: java.net.ConnectException: Connection refused
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