I tried it also completely without setting the config manually, so just
val conf = HBaseConfiguration.create() directly on the server, where hbase/hadoop etc. is installed. Same issue....I guess there is no connection issue but an issue with the region server (?) Understanding what exactly the exception means would be a first step, I guess. I've tried Apache Phoenix also and that works so it could not be a general issue with my Hbase/Hadoop config, I guess. 2014-12-16 17:06 GMT+01:00 Ted Yu <[email protected]>: > bq. conf.clear() > > Why is the above needed ? > Try removing it. > > Cheers > > On Tue, Dec 16, 2014 at 7:57 AM, Marco <[email protected]> wrote: >> >> no effect :( >> >> 2014-12-16 15:19 GMT+01:00 Marco <[email protected]>: >> > 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 >> >> >> >> -- >> Viele Grüße, >> Marco >> -- Viele Grüße, Marco
