Always throw error on RS log via jmx to get metrics

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Hi there,
  I recently use hbase jmx to get metrics, Although can get right data from port 60030, But always throw error on RS log. please see the below.
I wanna to know why is it and how to resolve the problems. 
  Thanks.


/jmx
javax.management.RuntimeErrorException: getMBeanInfo threw Error
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBeanInfo(DefaultMBeanServerInterceptor.java:1387)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.getMBeanInfo(JmxMBeanServer.java:920)
	at org.apache.hadoop.hbase.util.JSONBean.write(JSONBean.java:125)
	at org.apache.hadoop.hbase.util.JSONBean.access$000(JSONBean.java:53)
	at org.apache.hadoop.hbase.util.JSONBean$1.write(JSONBean.java:96)
	at org.apache.hadoop.hbase.http.jmx.JMXJsonServlet.doGet(JMXJsonServlet.java:202)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
	at org.apache.hadoop.hbase.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:113)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.ClickjackingPreventionFilter.doFilter(ClickjackingPreventionFilter.java:48)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1354)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:49)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:49)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:767)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.lang.AbstractMethodError: org.apache.hadoop.hbase.ipc.RpcScheduler.getWriteQueueLength()I
	at org.apache.hadoop.hbase.ipc.MetricsHBaseServerWrapperImpl.getWriteQueueLength(MetricsHBaseServerWrapperImpl.java:87)
	at org.apache.hadoop.hbase.ipc.MetricsHBaseServerSourceImpl.getMetrics(MetricsHBaseServerSourceImpl.java:228)
	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMetrics(MetricsSourceAdapter.java:199)
	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateJmxCache(MetricsSourceAdapter.java:182)
	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMBeanInfo(MetricsSourceAdapter.java:155)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBeanInfo(DefaultMBeanServerInterceptor.java:1378)
	... 34 more


Nested in javax.management.RuntimeErrorException: getMBeanInfo threw Error:
java.lang.AbstractMethodError: org.apache.hadoop.hbase.ipc.RpcScheduler.getWriteQueueLength()I
	at org.apache.hadoop.hbase.ipc.MetricsHBaseServerWrapperImpl.getWriteQueueLength(MetricsHBaseServerWrapperImpl.java:87)
	at org.apache.hadoop.hbase.ipc.MetricsHBaseServerSourceImpl.getMetrics(MetricsHBaseServerSourceImpl.java:228)
	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMetrics(MetricsSourceAdapter.java:199)
	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateJmxCache(MetricsSourceAdapter.java:182)
	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMBeanInfo(MetricsSourceAdapter.java:155)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBeanInfo(DefaultMBeanServerInterceptor.java:1378)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.getMBeanInfo(JmxMBeanServer.java:920)
	at org.apache.hadoop.hbase.util.JSONBean.write(JSONBean.java:125)
	at org.apache.hadoop.hbase.util.JSONBean.access$000(JSONBean.java:53)
	at org.apache.hadoop.hbase.util.JSONBean$1.write(JSONBean.java:96)
	at org.apache.hadoop.hbase.http.jmx.JMXJsonServlet.doGet(JMXJsonServlet.java:202)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
	at org.apache.hadoop.hbase.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:113)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.ClickjackingPreventionFilter.doFilter(ClickjackingPreventionFilter.java:48)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1354)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:49)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:49)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:767)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)



  Hbase version is hbase-1.2.0-cdh5.13.1.