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HBase, mail # user - Please help me how and when to catch java.net.ConnectException in case hbase is not running as it goes on connecting with hbase


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Please help me how and when to catch java.net.ConnectException in case hbase is not running as it goes on connecting with hbase
gaurhari dass 2013-03-26, 07:24
13/03/26 12:46:14 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:16 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181. Will not attempt to authenticate using
SASL (unknown error)
13/03/26 12:46:16 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:17 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181. Will not attempt to authenticate using
SASL (unknown error)
13/03/26 12:46:17 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:18 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181. Will not attempt to authenticate using
SASL (unknown error)
13/03/26 12:46:18 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:19 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181. Will not attempt to authenticate using
SASL (unknown error)
13/03/26 12:46:19 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:20 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181. Will not attempt to authenticate using
SASL (unknown error)
13/03/26 12:46:20 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:21 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181. Will not attempt to authenticate using
SASL (unknown error)
13/03/26 12:46:21 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:22 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181. Will not attempt to authenticate using
SASL (unknown error)
13/03/26 12:46:22 WARN zookeeper.ClientCnxn: Session 0x0 for server null,
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
    at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/03/26 12:46:22 WARN zookeeper.RecoverableZooKeeper: Possibly transient
ZooKeeper exception:
org.apache.zookeeper.KeeperException$ConnectionLossException:
KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
13/03/26 12:46:22 ERROR zookeeper.RecoverableZooKeeper: ZooKeeper exists
failed after 3 retries
13/03/26 12:46:22 WARN zookeeper.ZKUtil: hconnection Unable to set watcher
on znode (/hbase/hbaseid)
org.apache.zookeeper.KeeperException$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:1041)
    at
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:172)
    at org.apache