Jeongdae Kim created HBASE-24402: ------------------------------------ Summary: Moving the meta region causes MetricsException when using above 2.6.0 hadoop version Key: HBASE-24402 URL: https://issues.apache.org/jira/browse/HBASE-24402 Project: HBase Issue Type: Bug Affects Versions: 1.4.13 Reporter: Jeongdae Kim Assignee: Jeongdae Kim
When the meta region moved out from a region server then moved in to the one again. we got MetricsException below and the metric source for coprocessor could be re-registered. {noformat} 2020-04-21 15:13:02,956 WARN [HBase-Metrics2-1] util.MBeans: Error creating MBean object name: Hadoop:service=HBase,name=RegionServer,sub=Coprocessor.Region.C P_org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint org.apache.hadoop.metrics2.MetricsException: org.apache.hadoop.metrics2.MetricsException: Hadoop:service=HBase,name=RegionServer,sub=Coprocessor.Region.CP_org. apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint already exists! at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newObjectName(DefaultMetricsSystem.java:127) at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newMBeanName(DefaultMetricsSystem.java:102) at org.apache.hadoop.metrics2.util.MBeans.getMBeanName(MBeans.java:121) at org.apache.hadoop.metrics2.util.MBeans.register(MBeans.java:64) at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.startMBeans(MetricsSourceAdapter.java:222) at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.start(MetricsSourceAdapter.java:100) at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.registerSource(MetricsSystemImpl.java:268) at org.apache.hadoop.metrics2.impl.MetricsSystemImpl$1.postStart(MetricsSystemImpl.java:239) at jdk.internal.reflect.GeneratedMethodAccessor82.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.hadoop.metrics2.impl.MetricsSystemImpl$3.invoke(MetricsSystemImpl.java:320) at com.sun.proxy.$Proxy10.postStart(Unknown Source) at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.start(MetricsSystemImpl.java:193) at org.apache.hadoop.metrics2.impl.JmxCacheBuster$JmxCacheBusterRunnable.run(JmxCacheBuster.java:109) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) {noformat} -- This message was sent by Atlassian Jira (v8.3.4#803005)