Hbase错误⽇志分析
2017-03-13 18:23:11,852 INFO  [namenode1:60000.activeMasterManager-SendThread(app2:2181)]
zookeeper.ClientCnxn: Opening socket connection to server app2/10.226.21.35:2181. Will not attempt to authenticate using SASL (unknown error)
2017-03-13 18:23:11,853 WARN  [namenode1:60000.activeMasterManager-SendThread(app2:2181)]
zookeeper.ClientCnxn: Session 0x235ab6bb507e19e5 for server null, unexpected error, closing socket connection and attempting reconnect
java.ConnectException: 拒绝连接
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at keeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at keeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
2017-03-13 18:23:12,030 INFO  [namenode1:60000.activeMasterManager-SendThread(app3:2181)]
zookeeper.ClientCnxn: Opening socket connection to server app3/10.226.21.36:2181. Will not attempt to authenticate using SASL (unknown error)
2017-03-13 18:23:12,031 WARN  [namenode1:60000.activeMasterManager-SendThread(app3:2181)]
zookeeper.ClientCnxn: Session 0x235ab6bb507e19e5 for server null, unexpected error, closing socket connection and attempting reconnect
java.ConnectException: 拒绝连接
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at keeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at keeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
2017-03-13 18:23:12,061 INFO  [main-SendThread(app3:2181)] zookeeper.ClientCnxn: Opening sock
et connection to server app3/10.226.21.36:2181. Will not attempt to authenticate using SASL (unknown error)
2017-03-13 18:23:12,062 WARN  [main-SendThread(app3:2181)] zookeeper.ClientCnxn: Session 0x235ab6bb507e19e2 for server null, unexpected error, closing socket connection and attempting reconnect
java.ConnectException: 拒绝连接active transport
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
hbase报此类错误是因为，zookeeper停掉了，必须先把hadoop和zookeeper启动好，然后启动HBase

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