https://community.cloudera.com/t5/Archives-of-Support-Questions/Why-Storm-cluster-keeps-on-giving-KeeperException/m-p/125079#M34492 <P>Thank you Rahul ,</P><P>This solution worked for me .</P> Fri, 15 Jul 2016 13:19:08 GMT sidharth_mishra 2016-07-15T13:19:08Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Why-Storm-cluster-keeps-on-giving-KeeperException/m-p/125077#M34490 <P>I have deployed storm cluster with 3 zookeeper node and 1 nimbus 2 supervisor .After running for some time nimbus and supervisor stops and gives </P><P>java.lang.RuntimeException: org.apache.storm.shade.org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /supervisors at org.apache.storm.util$wrap_in_runtime.invoke(util.clj:54) at org.apache.storm.zookeeper$exists_node_QMARK_$fn__2091.invoke(zookeeper.clj:108) at org.apache.storm.zookeeper$exists_node_QMARK_.invoke(zookeeper.clj:104) at org.apache.storm.zookeeper$mkdirs.invoke(zookeeper.clj:124) at org.apache.storm.cluster_state.zookeeper_state_factory$_mkState$reify__11321.set_ephemeral_node(zookeeper_state_factory.clj:75) at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) at org.apache.storm.cluster$mk_storm_cluster_state$reify__3756.supervisor_heartbeat_BANG_(cluster.clj:528) at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) at org.apache.storm.daemon.supervisor$fn__9230$exec_fn__2461__auto____9231$heartbeat_fn__9233.invoke(supervisor.clj:790) at org.apache.storm.timer$schedule_recurring$this__6183.invoke(timer.clj:105) at org.apache.storm.timer$mk_timer$fn__6166$fn__6167.invoke(timer.clj:50) at org.apache.storm.timer$mk_timer$fn__6166.invoke(timer.clj:42) at clojure.lang.AFn.run(AFn.java:22) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.storm.shade.org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /supervisors at org.apache.storm.shade.org.apache.zookeeper.KeeperException.create(KeeperException.java:99) at org.apache.storm.shade.org.apache.zookeeper.KeeperException.create(KeeperException.java:51) at org.apache.storm.shade.org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045) at org.apache.storm.shade.org.apache.curator.framework.imps.ExistsBuilderImpl$3.call(ExistsBuilderImpl.java:226) at org.apache.storm.shade.org.apache.curator.framework.imps.ExistsBuilderImpl$3.call(ExistsBuilderImpl.java:215) at org.apache.storm.shade.org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:108) at org.apache.storm.shade.org.apache.curator.framework.imps.ExistsBuilderImpl.pathInForegroundStandard(ExistsBuilderImpl.java:212) at org.apache.storm.shade.org.apache.curator.framework.imps.ExistsBuilderImpl.pathInForeground(ExistsBuilderImpl.java:205) at org.apache.storm.shade.org.apache.curator.framework.imps.ExistsBuilderImpl.forPath(ExistsBuilderImpl.java:168) at org.apache.storm.shade.org.apache.curator.framework.imps.ExistsBuilderImpl.forPath(ExistsBuilderImpl.java:39) at org.apache.storm.zookeeper$exists_node_QMARK_$fn__2091.invoke(zookeeper.clj:107) ... 20 more 2016-07-08 11:10:49.100 o.a.s.event [ERROR] Error when processing event java.lang.RuntimeException: org.apache.storm.shade.org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /assignments at org.apache.storm.util$wrap_in_runtime.invoke(util.clj:54) at org.apache.storm.zookeeper$get_children.invoke(zookeeper.clj:187) at org.apache.storm.cluster_state.zookeeper_state_factory$_mkState$reify__11321.get_children(zookeeper_state_factory.clj:127) at sun.reflect.GeneratedMethodAccessor33.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) at org.apache.storm.cluster$mk_storm_cluster_state$reify__3756.assignments(cluster.clj:290) at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) at org.apache.storm.daemon.supervisor$assignments_snapshot.invoke(supervisor.clj:61) at org.apache.storm.daemon.supervisor$mk_synchronize_supervisor$this__9078.invoke(supervisor.clj:549) at org.apache.storm.event$event_manager$fn__8630.invoke(event.clj:40) at clojure.lang.AFn.run(AFn.java:22) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.storm.shade.org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /assignments at org.apache.storm.shade.org.apache.zookeeper.KeeperException.create(KeeperException.java:99) at org.apache.storm.shade.org.apache.zookeeper.KeeperException.create(KeeperException.java:51) at org.apache.storm.shade.org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1590) at org.apache.storm.shade.org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1625) at org.apache.storm.shade.org.apache.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:210) at org.apache.storm.shade.org.apache.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:203) at org.apache.storm.shade.org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:108) at org.apache.storm.shade.org.apache.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:200) at org.apache.storm.shade.org.apache.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:191) at org.apache.storm.shade.org.apache.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:38) at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) at org.apache.storm.zookeeper$get_children.invoke(zookeeper.clj:185)</P> Tue, 12 Jul 2016 18:53:48 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Why-Storm-cluster-keeps-on-giving-KeeperException/m-p/125077#M34490 sidharth_mishra 2016-07-12T18:53:48Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Why-Storm-cluster-keeps-on-giving-KeeperException/m-p/125078#M34491 <A rel="user" href="https://community.cloudera.com/users/11770/sidharthmishra91.html" nodeid="11770">@sidharth mishra</A><P>I find <A href="http://stackoverflow.com/questions/6153560/hbase-client-connectionloss-for-hbase-error" target="_blank">http://stackoverflow.com/questions/6153560/hbase-client-connectionloss-for-hbase-error</A> will be helpful in your case.</P> Wed, 13 Jul 2016 02:10:52 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Why-Storm-cluster-keeps-on-giving-KeeperException/m-p/125078#M34491 rpathak 2016-07-13T02:10:52Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Why-Storm-cluster-keeps-on-giving-KeeperException/m-p/125079#M34492 <P>Thank you Rahul ,</P><P>This solution worked for me .</P> Fri, 15 Jul 2016 13:19:08 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Why-Storm-cluster-keeps-on-giving-KeeperException/m-p/125079#M34492 sidharth_mishra 2016-07-15T13:19:08Z