bug宝典 hadoop篇 org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = Connec

采用hue删除hbase中的表之后，hbase中的表都不见了。执行hbase shell，出现下面的异常：

2017-02-20 14:40:31,246 ERROR [main] zookeeper.ZooKeeperWatcher: hconnection-0x504ceb560x0, quorum=localhost:2181, baseZNode=/hbase Received unexpected KeeperException, re-throwing exceptionorg.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)        at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:221)        at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:541)        at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)        at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105)        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:880)        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:636)        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)        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)        at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:450)        at org.jruby.javasupport.JavaMethod.invokeStaticDirect(JavaMethod.java:362)        at org.jruby.java.invokers.StaticMethodInvoker.call(StaticMethodInvoker.java:58)        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:312)        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:169)        at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)        at org.jruby.ast.InstAsgnNode.interpret(InstAsgnNode.java:95)        at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:104)        at org.jruby.ast.BlockNode.interpret(BlockNode.java:71)        at org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)        at org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:169)        at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:191)        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:302)        at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:144)        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:148)        at org.jruby.RubyClass.newInstance(RubyClass.java:822)        at org.jruby.RubyClass$i$newInstance.call(RubyClass$i$newInstance.gen:65535)        at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroOrNBlock.call(JavaMethod.java:249)        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:292)        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:135)        at home.hadoop.application.hbase.bin.hirb.__file__(/home/hadoop/application/hbase/bin/hirb.rb:118)        at home.hadoop.application.hbase.bin.hirb.load(/home/hadoop/application/hbase/bin/hirb.rb)        at org.jruby.Ruby.runScript(Ruby.java:697)        at org.jruby.Ruby.runScript(Ruby.java:690)        at org.jruby.Ruby.runNormally(Ruby.java:597)        at org.jruby.Ruby.runFromMain(Ruby.java:446)        at org.jruby.Main.doRunFromMain(Main.java:369)        at org.jruby.Main.internalRun(Main.java:258)        at org.jruby.Main.run(Main.java:224)        at org.jruby.Main.run(Main.java:208)        at org.jruby.Main.main(Main.java:188)HBase Shell; enter 'help<RETURN>' for list of supported commands.

在检查hbase的日志

2017-02-20 14:52:21,536 INFO  [dashuju174:16000.activeMasterManager-SendThread(localhost:2181)] zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)2017-02-20 14:52:21,536 WARN  [dashuju174:16000.activeMasterManager-SendThread(localhost:2181)] zookeeper.ClientCnxn: Session 0x35a4a9f919c0012 for server null, unexpected error, closing socket connection and attempting reconnectjava.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:361)    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)

重启zookeeper，就好了