Michael Stack created HBASE-24075:
-------------------------------------

             Summary: [Flakey Tests] teardown fails because JmxCacheBuster 
wants to read ClusterId from closed fs
                 Key: HBASE-24075
                 URL: https://issues.apache.org/jira/browse/HBASE-24075
             Project: HBase
          Issue Type: Bug
          Components: flakies
            Reporter: Michael Stack


I've seen this a few times. There may be an issue already but couldn't turn it 
up.

In teardown, we fail because of below access:

{code}
 2020-03-28 22:01:47,484 WARN  [HBase-Metrics2-1] master.CachedClusterId(105): 
Error fetching cluster ID
 java.io.IOException: Filesystem closed
   at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:468)
   at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1650)
   at 
org.apache.hadoop.hdfs.DistributedFileSystem$29.doCall(DistributedFileSystem.java:1523)
   at 
org.apache.hadoop.hdfs.DistributedFileSystem$29.doCall(DistributedFileSystem.java:1520)
   at 
org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
   at 
org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1520)
   at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1627)
   at org.apache.hadoop.hbase.util.FSUtils.getClusterId(FSUtils.java:578)
   at 
org.apache.hadoop.hbase.master.CachedClusterId.attemptFetch(CachedClusterId.java:103)
   at 
org.apache.hadoop.hbase.master.CachedClusterId.getFromCacheOrFetch(CachedClusterId.java:140)
   at org.apache.hadoop.hbase.master.HMaster.getClusterId(HMaster.java:3839)
   at 
org.apache.hadoop.hbase.master.MetricsMasterWrapperImpl.getClusterId(MetricsMasterWrapperImpl.java:68)
   at 
org.apache.hadoop.hbase.master.MetricsMasterSourceImpl.getMetrics(MetricsMasterSourceImpl.java:112)
   at 
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMetrics(MetricsSourceAdapter.java:200)
   at 
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateJmxCache(MetricsSourceAdapter.java:183)
   at 
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMBeanInfo(MetricsSourceAdapter.java:156)
   at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getNewMBeanClassName(DefaultMBeanServerInterceptor.java:333)
   at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:319)
   at 
com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
   at org.apache.hadoop.metrics2.util.MBeans.register(MBeans.java:66)
   at 
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.startMBeans(MetricsSourceAdapter.java:223)
   at 
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.start(MetricsSourceAdapter.java:101)
   at 
org.apache.hadoop.metrics2.impl.MetricsSystemImpl.registerSource(MetricsSystemImpl.java:268)
   at 
org.apache.hadoop.metrics2.impl.MetricsSystemImpl$1.postStart(MetricsSystemImpl.java:239)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at 
org.apache.hadoop.metrics2.impl.MetricsSystemImpl$3.invoke(MetricsSystemImpl.java:320)
   at com.sun.proxy.$Proxy13.postStart(Unknown Source)
   at 
org.apache.hadoop.metrics2.impl.MetricsSystemImpl.start(MetricsSystemImpl.java:193)
   at 
org.apache.hadoop.metrics2.impl.JmxCacheBuster$JmxCacheBusterRunnable.run(JmxCacheBuster.java:109)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
   at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
   at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   at java.lang.Thread.run(Thread.java:748)
{code}

Its hadoop metrics system. Its still up trying to work.



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