Here's the detailed log and you can see it establishes a few sessions for every seconds. It doesn't happen in other clusters but you can see the similar log in https://issues.apache.org/jira/browse/HBASE-9779. The HBase version is 0.9.3 so it print ReplicationSink status as INFO and the later version will set it as DEBUG.
2014-09-20,17:34:50,953 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:50,954 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:50,954 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:50,954 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-com-master02.bj/10.101.10.67:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:50,954 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-com-master02.bj/10.101.10.67:11000, initiating session 2014-09-20,17:34:50,956 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-com-master02.bj/10.101.10.67:11000, sessionid = 0x14877bf55307a85, negotiated timeout = 30000 2014-09-20,17:34:50,962 INFO org.apache.zookeeper.ZooKeeper: Session: 0x14877bf55307a85 closed 2014-09-20,17:34:50,962 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:50,963 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total replicated: 9 2014-09-20,17:34:50,984 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:50,985 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:50,985 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:50,985 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-com-master02.bj/10.101.10.67:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:50,985 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-com-master02.bj/10.101.10.67:11000, initiating session 2014-09-20,17:34:50,987 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-com-master02.bj/10.101.10.67:11000, sessionid = 0x14877bf55307a87, negotiated timeout = 30000 2014-09-20,17:34:50,993 INFO org.apache.zookeeper.ZooKeeper: Session: 0x14877bf55307a87 closed 2014-09-20,17:34:50,993 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:50,995 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:50,995 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:50,995 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:50,995 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-com-master02.bj/10.101.10.67:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:50,996 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-com-master02.bj/10.101.10.67:11000, initiating session 2014-09-20,17:34:50,997 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-com-master02.bj/10.101.10.67:11000, sessionid = 0x14877bf55307a88, negotiated timeout = 30000 2014-09-20,17:34:51,003 INFO org.apache.zookeeper.ZooKeeper: Session: 0x14877bf55307a88 closed 2014-09-20,17:34:51,003 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,004 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,004 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,004 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,005 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct03.bj/10.2.201.75:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,005 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct03.bj/10.2.201.75:11000, initiating session 2014-09-20,17:34:51,006 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct03.bj/10.2.201.75:11000, sessionid = 0x44877d1f0dfc467, negotiated timeout = 30000 2014-09-20,17:34:51,011 INFO org.apache.zookeeper.ZooKeeper: Session: 0x44877d1f0dfc467 closed 2014-09-20,17:34:51,011 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,013 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total replicated: 16 2014-09-20,17:34:51,048 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,048 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,048 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,048 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct01.bj/10.2.201.73:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,049 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct01.bj/10.2.201.73:11000, initiating session 2014-09-20,17:34:51,050 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct01.bj/10.2.201.73:11000, sessionid = 0x24878270100902a, negotiated timeout = 30000 2014-09-20,17:34:51,056 INFO org.apache.zookeeper.ZooKeeper: Session: 0x24878270100902a closed 2014-09-20,17:34:51,056 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,058 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,058 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,058 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,058 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-com-master02.bj/10.101.10.67:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,059 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-com-master02.bj/10.101.10.67:11000, initiating session 2014-09-20,17:34:51,060 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-com-master02.bj/10.101.10.67:11000, sessionid = 0x14877bf55307a8b, negotiated timeout = 30000 2014-09-20,17:34:51,066 INFO org.apache.zookeeper.ZooKeeper: Session: 0x14877bf55307a8b closed 2014-09-20,17:34:51,066 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,068 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,068 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,068 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,068 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct02.bj/10.2.201.74:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,069 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct02.bj/10.2.201.74:11000, initiating session 2014-09-20,17:34:51,070 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct02.bj/10.2.201.74:11000, sessionid = 0x34877bf55f10496, negotiated timeout = 30000 2014-09-20,17:34:51,075 INFO org.apache.zookeeper.ZooKeeper: Session: 0x34877bf55f10496 closed 2014-09-20,17:34:51,075 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,076 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total replicated: 12 2014-09-20,17:34:51,085 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,086 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,086 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,086 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct03.bj/10.2.201.75:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,086 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct03.bj/10.2.201.75:11000, initiating session 2014-09-20,17:34:51,087 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct03.bj/10.2.201.75:11000, sessionid = 0x44877d1f0dfc469, negotiated timeout = 30000 2014-09-20,17:34:51,093 INFO org.apache.zookeeper.ZooKeeper: Session: 0x44877d1f0dfc469 closed 2014-09-20,17:34:51,093 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,095 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,095 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,095 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,095 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct02.bj/10.2.201.74:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,096 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct02.bj/10.2.201.74:11000, initiating session 2014-09-20,17:34:51,097 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct02.bj/10.2.201.74:11000, sessionid = 0x34877bf55f10497, negotiated timeout = 30000 2014-09-20,17:34:51,103 INFO org.apache.zookeeper.ZooKeeper: Session: 0x34877bf55f10497 closed 2014-09-20,17:34:51,103 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,105 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,105 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,105 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,106 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct02.bj/10.2.201.74:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,106 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct02.bj/10.2.201.74:11000, initiating session 2014-09-20,17:34:51,107 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct02.bj/10.2.201.74:11000, sessionid = 0x34877bf55f10498, negotiated timeout = 30000 2014-09-20,17:34:51,112 INFO org.apache.zookeeper.ZooKeeper: Session: 0x34877bf55f10498 closed 2014-09-20,17:34:51,112 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,115 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total replicated: 14 2014-09-20,17:34:51,168 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,168 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,168 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,168 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct03.bj/10.2.201.75:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,169 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct03.bj/10.2.201.75:11000, initiating session 2014-09-20,17:34:51,170 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct03.bj/10.2.201.75:11000, sessionid = 0x44877d1f0dfc46d, negotiated timeout = 30000 2014-09-20,17:34:51,175 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,175 INFO org.apache.zookeeper.ZooKeeper: Session: 0x44877d1f0dfc46d closed 2014-09-20,17:34:51,177 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,177 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,177 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,177 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct03.bj/10.2.201.75:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,177 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct03.bj/10.2.201.75:11000, initiating session 2014-09-20,17:34:51,179 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct03.bj/10.2.201.75:11000, sessionid = 0x44877d1f0dfc46e, negotiated timeout = 30000 2014-09-20,17:34:51,184 INFO org.apache.zookeeper.ZooKeeper: Session: 0x44877d1f0dfc46e closed 2014-09-20,17:34:51,184 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,185 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total replicated: 2 2014-09-20,17:34:51,203 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,204 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,204 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,204 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct02.bj/10.2.201.74:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,204 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct02.bj/10.2.201.74:11000, initiating session 2014-09-20,17:34:51,205 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct02.bj/10.2.201.74:11000, sessionid = 0x34877bf55f1049c, negotiated timeout = 30000 2014-09-20,17:34:51,211 INFO org.apache.zookeeper.ZooKeeper: Session: 0x34877bf55f1049c closed 2014-09-20,17:34:51,211 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,213 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,213 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,213 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,213 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct01.bj/10.2.201.73:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,214 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct01.bj/10.2.201.73:11000, initiating session 2014-09-20,17:34:51,215 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct01.bj/10.2.201.73:11000, sessionid = 0x24878270100902c, negotiated timeout = 30000 2014-09-20,17:34:51,221 INFO org.apache.zookeeper.ZooKeeper: Session: 0x24878270100902c closed 2014-09-20,17:34:51,221 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,224 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,224 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,224 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,224 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-hadoop-srv-ct03.bj/10.2.201.75:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,225 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-hadoop-srv-ct03.bj/10.2.201.75:11000, initiating session 2014-09-20,17:34:51,226 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-hadoop-srv-ct03.bj/10.2.201.75:11000, sessionid = 0x44877d1f0dfc46f, negotiated timeout = 30000 2014-09-20,17:34:51,232 INFO org.apache.zookeeper.ZooKeeper: Session: 0x44877d1f0dfc46f closed 2014-09-20,17:34:51,232 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,233 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total replicated: 16 2014-09-20,17:34:51,362 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,362 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,362 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,363 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-com-master01.bj/10.101.10.66:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,363 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-com-master01.bj/10.101.10.66:11000, initiating session 2014-09-20,17:34:51,364 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-com-master01.bj/10.101.10.66:11000, sessionid = 0x4877f561587a09, negotiated timeout = 30000 2014-09-20,17:34:51,370 INFO org.apache.zookeeper.ZooKeeper: Session: 0x4877f561587a09 closed 2014-09-20,17:34:51,370 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,371 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,371 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,372 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,372 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-com-master01.bj/10.101.10.66:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,372 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-com-master01.bj/10.101.10.66:11000, initiating session 2014-09-20,17:34:51,373 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-com-master01.bj/10.101.10.66:11000, sessionid = 0x4877f561587a0b, negotiated timeout = 30000 2014-09-20,17:34:51,380 INFO org.apache.zookeeper.ZooKeeper: Session: 0x4877f561587a0b closed 2014-09-20,17:34:51,380 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,382 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 sessionTimeout=30000 watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@55d4ee7e 2014-09-20,17:34:51,382 INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of this process is [email protected] 2014-09-20,17:34:51,382 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as SASL mechanism. 2014-09-20,17:34:51,382 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server lg-com-master01.bj/10.101.10.66:11000. Will attempt to SASL-authenticate using Login Context section 'Client' 2014-09-20,17:34:51,383 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to lg-com-master01.bj/10.101.10.66:11000, initiating session 2014-09-20,17:34:51,384 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server lg-com-master01.bj/10.101.10.66:11000, sessionid = 0x4877f561587a0c, negotiated timeout = 30000 2014-09-20,17:34:51,390 INFO org.apache.zookeeper.ZooKeeper: Session: 0x4877f561587a0c closed 2014-09-20,17:34:51,390 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down 2014-09-20,17:34:51,391 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total replicated: 3 On Sat, Sep 20, 2014 at 1:44 PM, lars hofhansl <[email protected]> wrote: > Hi, > > can you define "frequently"? > I.e. send a larger snippet of the log. Connecting every few minutes would > OK, Multiple times per second would be strange. > > -- Lars > > > > ________________________________ > From: tobe <[email protected]> > To: "[email protected]" <[email protected]> > Sent: Thursday, September 18, 2014 1:50 AM > Subject: HBase establishes session with ZooKeeper and close the session > immediately > > > I have found that our RegionServers connect to the ZooKeeper frequently. > They seems to constantly establish the session, close it and reconnect the > ZooKeeper. Here is the log for both server and client sides. I have no idea > why this happens and how to deal with it? We're using HBase 0.94.11 and > ZooKeeper 3.4.4. > > The log from HBase RegionServer: > > 2014-09-18,16:38:17,867 INFO org.apache.zookeeper.ZooKeeper: Initiating > client connection, connectString=10.2.201.74:11000,10.2.201.73:11000, > 10.101.10.67:11000,10.101.10.66:11000,10.2.201.75:11000 > sessionTimeout=30000 > > watcher=catalogtracker-on-org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@69d892a1 > 2014-09-18,16:38:17,868 INFO > org.apache.zookeeper.client.ZooKeeperSaslClient: Client will use GSSAPI as > SASL mechanism. > 2014-09-18,16:38:17,868 INFO org.apache.zookeeper.ClientCnxn: Opening > socket connection to server lg-hadoop-srv-ct01.bj/10.2.201.73:11000. Will > attempt to SASL-authenticate using Login Context section 'Client' > 2014-09-18,16:38:17,868 INFO > org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier of > this process is [email protected] > 2014-09-18,16:38:17,868 INFO org.apache.zookeeper.ClientCnxn: Socket > connection established to lg-hadoop-srv-ct01.bj/10.2.201.73:11000, > initiating session > 2014-09-18,16:38:17,870 INFO org.apache.zookeeper.ClientCnxn: Session > establishment complete on server lg-hadoop-srv-ct01.bj/10.2.201.73:11000, > sessionid = 0x248782700e52b3c, negotiated timeout = 30000 > 2014-09-18,16:38:17,876 INFO org.apache.zookeeper.ZooKeeper: Session: > 0x248782700e52b3c closed > 2014-09-18,16:38:17,876 INFO org.apache.zookeeper.ClientCnxn: EventThread > shut down > 2014-09-18,16:38:17,878 INFO > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink: Total > replicated: 24 > > The log from its ZooKeeper server: > > 2014-09-18,16:38:17,869 INFO > org.apache.zookeeper.server.NIOServerCnxnFactory: [myid:2] Accepted socket > connection from /10.2.201.76:55621 > 2014-09-18,16:38:17,869 INFO org.apache.zookeeper.server.ZooKeeperServer: > [myid:2] Client attempting to establish new session at /10.2.201.76:55621 > 2014-09-18,16:38:17,870 INFO org.apache.zookeeper.server.ZooKeeperServer: > [myid:2] Established session 0x248782700e52b3c with negotiated timeout > 30000 for client /10.2.201.76:55621 > 2014-09-18,16:38:17,872 INFO > org.apache.zookeeper.server.auth.SaslServerCallbackHandler: [myid:2] > Successfully authenticated client: > authenticationID=hbase_srv/[email protected]; > authorizationID=hbase_srv/[email protected]. > 2014-09-18,16:38:17,872 INFO > org.apache.zookeeper.server.auth.SaslServerCallbackHandler: [myid:2] > Setting authorizedID: hbase_srv > 2014-09-18,16:38:17,872 INFO org.apache.zookeeper.server.ZooKeeperServer: > [myid:2] adding SASL authorization for authorizationID: hbase_srv > 2014-09-18,16:38:17,877 INFO org.apache.zookeeper.server.NIOServerCnxn: > [myid:2] Closed socket connection for client /10.2.201.76:55621 which had > sessionid 0x248782700e52b3c >
