So, I am trying to query my hbase cluster on Amazon ec2 using a custom jar i running as a MapReduce step. Im my jar (inside the map function) I call Hbase the following:
public void map( Text key, BytesWritable value, Context contex ) throws IOException, InterruptedException {
Configuration conf = HBaseConfiguration.create();
HTable table = new HTable(conf, "tablename");
...
The problem is that when it gets into this HTable line and tries to connect to hbase, the step fails, and I get the following errors:
2014-02-28 18:00:49,936 INFO [main] org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=localhost:2181 sessionTimeout=180000 watcher=hconnection
2014-02-28 18:00:49,974 INFO [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is 5119@ip-10-0-35-130.ec2.internal
2014-02-28 18:00:49,998 INFO [main-SendThread(localhost:2181)] org.apache.zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
2014-02-28 18:00:50,005 WARN [main-SendThread(localhost:2181)] org.apache.zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
...
2014-02-28 18:01:05,542 WARN [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper exception: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
2014-02-28 18:01:05,542 ERROR [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 3 retries
2014-02-28 18:01:05,542 WARN [main] org.apache.hadoop.hbase.zookeeper.ZKUtil: hconnection Unable to set watcher on znode (/hbase/hbaseid)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
... and on and on
I can use the hbase shell just fine, and you can request data and everything that is in the shell. I have no idea where to start, and I've been looking for many hours, no luck. Most issues like this on the Internet don't talk about Amazon special fixes. I thought that zookeeper and hbase should automatically connect appropriately using the amazon bootstrap.
Im, jbase 0.94.17 jar amazon, hbase 0.94.7 im , , , Java . - , .