我是mohanselvakumar，是hbase系统的新手，请求在以下方面帮助我使用我的一个hbase服务器。
场景是我已经设置了10个节点的集群，其中有2个名称节点（一个主节点和一个辅助节点）。
在10个节点上，我在所有节点上运行datanode和regionserver服务。
现在问题出在10个节点上，其中一个节点因为以下异常而持续下行；

Frequent Error No:01

2013-01-25 12:10:51,918 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: ABORTING region server serverName=DC1AuthDFSC1D1.cidr.gov.in,6020,1359093222948, load=(requests=10, regions=876, usedHeap=1925, maxHeap=11897): regionserver:6020-0x3c13d364d92db2-0x3c13d364d92db2 regionserver:6020-0x3c13d364d92db2-0x3c13d364d92db2 received expired from ZooKeeper, aborting
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired
    at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.connectionEvent(ZooKeeperWatcher.java:328)
    at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:246)
    at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:530)
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:506)
2013-01-25 12:10:51,931 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Dump of metrics: request=0.0, regions=876, stores=992, storefiles=2380, storefileIndexSize=769, memstoreSize=19, compactionQueueSize=0, flushQueueSize=0, usedHeap=2043, maxHeap=11897, blockCacheSize=808359784, blockCacheFree=1686753176, blockCacheCount=11005, blockCacheHitCount=80692, blockCacheMissCount=149039, blockCacheEvictedCount=0, blockCacheHitRatio=35, blockCacheHitCachingRatio=87
2013-01-25 12:10:51,931 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: regionserver:6020-0x3c13d364d92db2-0x3c13d364d92db2 regionserver:6020-0x3c13d364d92db2-0x3c13d364d92db2 received expired from ZooKeeper, aborting
2013-01-25 12:10:51,932 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down
2013-01-25 12:10:54,703 INFO org.apache.hadoop.hbase.regionserver.LogRoller: LogRoller exiting.
2013-01-25 12:10:58,660 INFO org.apache.hadoop.hbase.regionserver.CompactSplitThread: regionserver6020.compactor exiting
2013-01-25 12:11:00,866 INFO org.apache.hadoop.hbase.regionserver.MemStoreFlusher: regionserver6020.cacheFlusher exiting
2013-01-25 12:11:02,647 INFO org.apache.hadoop.ipc.HBaseServer: Stopping server on 6020
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 0 on 6020: exiting
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: PRI IPC Server handler 5 on 6020: exiting
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: PRI IPC Server handler 3 on 6020: exiting
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: Stopping IPC Server listener on 6020
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 7 on 6020: exiting
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: PRI IPC Server handler 6 on 6020: exiting
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 5 on 6020: exiting
2013-01-25 12:11:02,648 INFO org.apache.hadoop.ipc.HBaseServer: Stopping IPC Server Responder
2013-01-25 12:11:02,649 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 3 on 6020: exiting
2013-01-25 12:11:02,649 INFO org.apache.hadoop.ipc.HBaseServer: PRI IPC Server handler 0 on 6020: exiting

Frequent Error No:02

    2013-01-25 12:11:19,106 INFO org.apache.hadoop.hbase.regionserver.Leases: regionserver6020 closing leases
    2013-01-25 12:11:19,106 INFO org.apache.hadoop.hbase.regionserver.Leases: regionserver6020 closed leases
    2013-01-25 12:11:19,136 INFO org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation: Closed zookeeper sessionid=0x13c13d323792d99
    2013-01-25 12:11:19,138 INFO org.apache.zookeeper.ZooKeeper: Session: 0x13c13d323792d99 closed
    2013-01-25 12:11:19,138 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down
    2013-01-25 12:11:19,143 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: regionserver6020 exiting
    2013-01-25 12:11:19,152 INFO org.apache.hadoop.hbase.regionserver.ShutdownHook: Shutdown hook starting; hbase.shutdown.hook=true; fsShutdownHook=Thread[Thread-14,5,main]
    2013-01-25 12:11:19,152 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED: Shutdown hook
    2013-01-25 12:11:19,152 INFO org.apache.hadoop.hbase.regionserver.ShutdownHook: Starting fs shutdown hook thread.
    2013-01-25 12:11:19,153 ERROR org.apache.hadoop.hdfs.DFSClient: Exception closing file