Hi, Hbase is installed correctly and working (hbase shell works fine).
But I'm not able to use the Java API to connect to an existing Hbase Table: <<< val conf = HBaseConfiguration.create() conf.clear() conf.set("hbase.zookeeper.quorum", "ip:2181"); conf.set("hbase.zookeeper.property.clientPort", "2181"); conf.set("hbase.zookeeper.dns.nameserver", "ip"); conf.set("hbase.regionserver.port","60020"); conf.set("hbase.master", "ip:60000"); val hTable = new HTable(conf, "truck_events") >>> Actually the coding is Scala but I think it is understandable, what I am trying to achieve. I've tried also to use hbase-site.xml instead of manually configuring it - but the result is the same. As response I got 14/12/16 15:10:05 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=ip:2181 sessionTimeout=30000 watcher=hconnection 14/12/16 15:10:10 INFO zookeeper.ClientCnxn: Opening socket connection to server ip:2181. Will not attempt to authenticate using SASL (unknown error) 14/12/16 15:10:10 INFO zookeeper.ClientCnxn: Socket connection established to ip:2181, initiating session 14/12/16 15:10:10 INFO zookeeper.ClientCnxn: Session establishment complete on server ip:2181, sessionid = 0x14a53583e080010, negotiated timeout = 30000 and then finally after a couple of minutes: (the constructor call of HTable is hanging) [error] (run-main-0) org.apache.hadoop.hbase.client.NoServerForRegionException: Unable to find region for truck_events,,99999999999999 after 14 tries. org.apache.hadoop.hbase.client.NoServerForRegionException: Unable to find region for truck_events,,99999999999999 after 14 tries. at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1092) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:997) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1099) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:1001) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:958) at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:251) at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:155) at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:129) at HbaseConnector$.main(HbaseConnector.scala:18) at HbaseConnector.main(HbaseConnector.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) [trace] Stack trace suppressed: run last compile:run for the full output. 14/12/16 13:22:15 ERROR zookeeper.ClientCnxn: Event thread exiting due to interruption java.lang.InterruptedException at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(AbstractQueuedSynchronizer.java:2017) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2052) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:491) 14/12/16 13:22:15 INFO zookeeper.ClientCnxn: EventThread shut down java.lang.RuntimeException: Nonzero exit code: 1 at scala.sys.package$.error(package.scala:27) [trace] Stack trace suppressed: run last compile:run for the full output. [error] (compile:run) Nonzero exit code: 1 [error] Total time: 1106 s, completed Dec 16, 2014 1:22:15 PM In the RegionServer log, I've seen this: 2014-12-16 13:31:34,087 DEBUG [RpcServer.listener,port=60020] ipc.RpcServer: RpcServer.listener,port=60020: connection from 10.97.68.159:41772; # active connections: 1 2014-12-16 13:33:34,220 DEBUG [RpcServer.reader=1,port=60020] ipc.RpcServer: RpcServer.listener,port=60020: DISCONNECTING client 10.97.68.159:41772 because read count=-1. Number of active connections: 1 2014-12-16 13:36:26,988 DEBUG [LruStats #0] hfile.LruBlockCache: Total=430.02 KB, free=401.18 MB, max=401.60 MB, blockCount=4, accesses=28, hits=24, hitRatio=85.71%, , cachingAccesses=28, cachingHits=24, cachingHitsRatio=85.71%, evictions=269, evicted=0, evictedPerRun=0.0 2014-12-16 13:36:34,017 DEBUG [RpcServer.listener,port=60020] ipc.RpcServer: RpcServer.listener,port=60020: connection from 10.97.68.159:42728; # active connections: 1 2014-12-16 13:38:34,112 DEBUG [RpcServer.reader=2,port=60020] ipc.RpcServer: RpcServer.listener,port=60020: DISCONNECTING client 10.97.68.159:42728 because read count=-1. Number of active connections: 1 2014-12-16 13:41:26,989 DEBUG [LruStats #0] hfile.LruBlockCache: Total=430.02 KB, free=401.18 MB, max=401.60 MB, blockCount=4, accesses=30, hits=26, hitRatio=86.67%, , cachingAccesses=30, cachingHits=26, cachingHitsRatio=86.67%, evictions=299, evicted=0, evictedPerRun=0.0 So it connects and disconnects with read count -1 . Can anybody help me finding the root cause of this issue ? I've tried to restart Hbase and so on but with no effect. Hive is also working fine, just not my coding :( Thanks a lot, Marco