I have a single node hadoop and have installed hbase also on my ubuntu 12.04. Now i want to install titan over hbase. I have setup hadoop-1.0.3 and hbase-0.94.18 and titan/hbase-0.4.2
I have added a user mnit.My /usr/local/ folder contains hadoop2 , hbase2, titan2 .First i start my hadoop using command bin/start-all.sh and then i start hbase using command bin/start-hbase.sh . after it when i do jps i found the following :
mnit@aman:/usr/local$ jps
9921 DataNode
11386 HRegionServer
11041 HQuorumPeer
11537 Jps
11115 HMaster
10153 SecondaryNameNode
10252 JobTracker
9691 NameNode
10483 TaskTracker
now i start gremlin.sh in titan2 using command bin/gremlin.sh .
i applied the following commands
mnit@aman:/usr/local/titan2$ bin/gremlin.sh
gremlin> conf = new BaseConfiguration();
==>org.apache.commons.configuration.BaseConfiguration@19288c2
gremlin> conf.setProperty("storage.backend","hbase");
==>null
gremlin> conf.setProperty("storage.hostname","127.0.0.1");
==>null
gremlin> g = TitanFactory.open(conf);
WARN org.apache.zookeeper.ClientCnxn - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
WARN org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper - Possibly transient ZooKeeper exception: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
WARN org.apache.zookeeper.ClientCnxn - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
..................................................................................................
The information related to zookeeper is as follows:
zk is managed by hbase in my system. i have added the following line in bin/hbase-env.sh
export HBASE_MANAGES_ZK=true
the content of my hbase-site.xml is as follows :
<configuration>
<property>
<name>hbase.rootdir</name>
<value>hdfs://localhost:54310/user/hbase</value>
</property>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2222</value>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>localhost</value>
</property>
<property>
<name>hbase.zookeeper.property.datadir</name>
<value>/app/hadoop/tmp/zookeeper</value>
</property>
</configuration>
When i searched over this problem i found that there is a file named
pom.xml but the titan that i have downloaded does not contain pom.xml.
please tell me if this is a problem due to pom.xml. or i am doing
something wrong or there is some other issue.
Thanks in advance