我已经在hdfs之上为分布式模式配置了hbase。我格式化了hadoop namenode，hdfs配置正确。它正在运行。
hbase主机未启动。错误为“impl.metricssystemimpl:源名称ugi已存在”。下面是hbase主机的详细错误日志

apreduce/*:/contrib/capacity-scheduler/*.jar
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:CLASS_PATH=.
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine:   env:SSH_CONNECTION=193.60.151.202 36343 192.168.0.84 22
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:NLSPATH=/usr/dt/lib/nls/msg/%L/%N.cat
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:HADOOP_COMMON_LIB_NATIVE_DIR=/home/ubuntu/hadoop/lib/native
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:XDG_RUNTIME_DIR=/run/user/1000
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:HBASE_THRIFT_OPTS=
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:HBASE_HOME=/home/ubuntu/hbase-0.98.20-hadoop1/bin/..
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:HOME=/home/ubuntu
2016-07-13 14:06:19,374 INFO  [main] util.ServerCommandLine: env:MALLOC_ARENA_MAX=4
2016-07-13 14:06:19,377 INFO  [main] util.ServerCommandLine: vmName=Java HotSpot(TM) 64-Bit Server VM, vmVendor=Oracle Corporation, vmVersion=25.91-b14
2016-07-13 14:06:19,377 INFO  [main] util.ServerCommandLine:     vmInputArguments=[-Dproc_master, -XX:OnOutOfMemoryError=kill -9 %p, -Xmx1000m, -   XX:+UseConcMarkSweepGC, -Dhbase.log.dir=/home/ubuntu/hbase-0.98.20-  hadoop1/bin/../logs, -Dhbase.log.file=hbase-ubuntu-master-master.log, -  Dhbase.home.dir=/home/ubuntu/hbase-0.98.20-hadoop1/bin/.., - Dhbase.id.str=ubuntu, -Dhbase.root.logger=INFO,RFA, - Djava.library.path=/home/ubuntu/hadoop/lib, -Dhbase.security.logger=INFO,RFAS]
2016-07-13 14:06:19,435 DEBUG [main] master.HMaster: master/master/192.168.0.84:60000 HConnection server-to-server retries=350
2016-07-13 14:06:19,649 INFO  [main] ipc.RpcServer: master/master/192.168.0.84:60000: started 10 reader(s).
2016-07-13 14:06:19,722 INFO  [main] impl.MetricsConfig: loaded properties from hadoop-metrics2-hbase.properties
2016-07-13 14:06:19,801 INFO  [main] impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
2016-07-13 14:06:19,803 INFO  [main] impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2016-07-13 14:06:19,803 INFO  [main] impl.MetricsSystemImpl: HBase metrics system started
2016-07-13 14:06:19,807 INFO  [main] impl.MetricsSourceAdapter: MBean for source jvm registered.
2016-07-13 14:06:19,810 INFO  [main] impl.MetricsSourceAdapter: MBean for source IPC,sub=IPC registered.
2016-07-13 14:06:19,988 INFO  [main] impl.MetricsSourceAdapter: MBean for source ugi registered.
2016-07-13 14:06:19,988 WARN  [main] impl.MetricsSystemImpl: Source name ugi already exists!
2016-07-13 14:06:20,188 ERROR [main] master.HMasterCommandLine: Master exiting
java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster
at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:3119)
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:193)
at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:135)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:127)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:3133)
Caused by: java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:392)
at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:852)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:790)
Wed Jul 13 15:57:58 UTC 2016 Stopping hbase (via master)
Wed Jul 13 16:06:47 UTC 2016 Stopping hbase (via master)
Wed Jul 13 16:11:11 UTC 2016 Starting master on master
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 125284
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited

任何解决错误的指针都非常感谢。。。。