HBase-1.0.1学习笔记（五）How HBase Master selection with Zookeeper

dsqzhaoyue

# 从zookeeper的日志中看到zookeeper认为从114的client连接已经断开了，并尝试建立119的连接　　
2015-09-02 23:02:38,225 [myid:2] - WARN  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@357] - caught end of stream exception
　　
EndOfStreamException: Unable to read additional data from client sessionid 0x24f8d2924cf0008, likely client has closed socket
　　
        at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228)
　　
        at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208)
　　
        at java.lang.Thread.run(Thread.java:745)
　　
2015-09-02 23:02:38,227 [myid:2] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007] - Closed socket connection for client /192.168.128.114:38986 which had sessionid 0x24f8d2924cf0008
　　
2015-09-02 23:02:42,086 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@494] - Processed session termination for sessionid: 0x14f8d24f53b000c
　　
2015-09-02 23:02:43,403 [myid:2] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /192.168.128.119:43855
　　
2015-09-02 23:02:43,404 [myid:2] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@868] - Client attempting to establish new session at /192.168.128.119:43855
　　
2015-09-02 23:02:43,408 [myid:2] - INFO  [CommitProcessor:2:ZooKeeperServer@617] - Established session 0x24f8d2924cf000c with negotiated timeout 40000 for client /192.168.128.119:43855
　　
2015-09-02 23:02:43,544 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@645] - Got user-level KeeperException when processing sessionid:0x14f8d24f53b000b type:create cxid:0x35 zxid:0xa000000ce txntype:-1 reqpath:n/a Error Path:/hbase/online-snapshot/acquired Error:KeeperErrorCode = NodeExists for /hbase/online-snapshot/acquired
　　
2015-09-02 23:02:43,586 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@645] - Got user-level KeeperException when processing sessionid:0x14f8d24f53b000d type:create cxid:0x1 zxid:0xa000000d0 txntype:-1 reqpath:n/a Error Path:/hbase/replication/rs Error:KeeperErrorCode = NodeExists for /hbase/replication/rs
　　
2015-09-02 23:02:49,501 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@645] - Got user-level KeeperException when processing sessionid:0x14f8d24f53b000b type:create cxid:0x6a zxid:0xa000000d1 txntype:-1 reqpath:n/a Error Path:/hbase/namespace/default Error:KeeperErrorCode = NodeExists for /hbase/namespace/default
　　
2015-09-02 23:02:49,517 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@645] - Got user-level KeeperException when processing sessionid:0x14f8d24f53b000b type:create cxid:0x6c zxid:0xa000000d3 txntype:-1 reqpath:n/a Error Path:/hbase/namespace/hbase Error:KeeperErrorCode = NodeExists for /hbase/namespace/hbase
　　
2015-09-02 23:03:16,000 [myid:2] - INFO  [SessionTracker:ZooKeeperServer@347] - Expiring session 0x14f8d24f53b0006, timeout of 40000ms exceeded
　　
2015-09-02 23:03:16,001 [myid:2] - INFO  [SessionTracker:ZooKeeperServer@347] - Expiring session 0x24f8d2924cf0008, timeout of 40000ms exceeded
　　
2015-09-02 23:03:16,002 [myid:2] - INFO  [SessionTracker:ZooKeeperServer@347] - Expiring session 0x14f8d24f53b0008, timeout of 40000ms exceeded
　　
2015-09-02 23:03:16,002 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@494] - Processed session termination for sessionid: 0x14f8d24f53b0006
　　
2015-09-02 23:03:16,003 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@494] - Processed session termination for sessionid: 0x24f8d2924cf0008
　　
2015-09-02 23:03:16,004 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@494] - Processed session termination for sessionid: 0x14f8d24f53b0008
　　
2015-09-02 23:03:32,163 [myid:2] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /192.168.128.114:39048
　　
2015-09-02 23:03:32,176 [myid:2] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@868] - Client attempting to establish new session at /192.168.128.114:39048
　　
2015-09-02 23:03:32,180 [myid:2] - INFO  [CommitProcessor:2:ZooKeeperServer@617] - Established session 0x24f8d2924cf000d with negotiated timeout 30000 for client /192.168.128.114:39048
　　
2015-09-02 23:04:17,219 [myid:2] - WARN  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@357] - caught end of stream exception
　　
EndOfStreamException: Unable to read additional data from client sessionid 0x24f8d2924cf000d, likely client has closed socket
　　
        at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228)
　　
        at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208)
　　
        at java.lang.Thread.run(Thread.java:745)
　　
2015-09-02 23:04:17,222 [myid:2] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007] - Closed socket connection for client /192.168.128.114:39048 which had sessionid 0x24f8d2924cf000d
　　
2015-09-02 23:04:44,000 [myid:2] - INFO  [SessionTracker:ZooKeeperServer@347] - Expiring session 0x24f8d2924cf000d, timeout of 30000ms exceeded
　　
2015-09-02 23:04:44,001 [myid:2] - INFO  [ProcessThread(sid:2 cport:-1)::PrepRequestProcessor@494] - Processed session termination for sessionid: 0x24f8d2924cf000d