Liang Xie created HADOOP-10337:
----------------------------------
Summary: ConcurrentModificationException from
MetricsDynamicMBeanBase.createMBeanInfo()
Key: HADOOP-10337
URL: https://issues.apache.org/jira/browse/HADOOP-10337
Project: Hadoop Common
Issue Type: Bug
Components: metrics
Affects Versions: 2.2.0, 3.0.0
Reporter: Liang Xie
Assignee: Liang Xie
Attachments: HADOOP-10337.txt
This stack trace came from our HBase 0.94.3 production env:
2014-02-11,17:34:46,562 ERROR org.apache.hadoop.jmx.JMXJsonServlet: getting
attribute
tbl.micloud_gallery_albumsharetag_v2.region.96a6d0bc9f0153e0e1ec0318b39ecc45.next_histogram_99th_percentile
of hadoop:service=RegionServer,name=RegionServerDynamicStatistics threw an
exception
javax.management.RuntimeMBeanException:
java.util.ConcurrentModificationException
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrow(DefaultMBeanServerInterceptor.java:856)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrowMaybeMBeanException(DefaultMBeanServerInterceptor.java:869)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:670)
at
com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:638)
at
org.apache.hadoop.jmx.JMXJsonServlet.writeAttribute(JMXJsonServlet.java:315)
at
org.apache.hadoop.jmx.JMXJsonServlet.listBeans(JMXJsonServlet.java:293)
at org.apache.hadoop.jmx.JMXJsonServlet.doGet(JMXJsonServlet.java:193)
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$CachedChain.doFilter(ServletHandler.java:1221)
at
org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:109)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at
org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1057)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$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$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
at java.util.HashMap$ValueIterator.next(HashMap.java:822)
at
org.apache.hadoop.metrics.util.MetricsDynamicMBeanBase.createMBeanInfo(MetricsDynamicMBeanBase.java:87)
at
org.apache.hadoop.metrics.util.MetricsDynamicMBeanBase.updateMbeanInfoIfMetricsListChanged(MetricsDynamicMBeanBase.java:78)
at
org.apache.hadoop.metrics.util.MetricsDynamicMBeanBase.getAttribute(MetricsDynamicMBeanBase.java:138)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:666)
... 27 more
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