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https://issues.apache.org/jira/browse/HBASE-27384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aman Poonia reassigned HBASE-27384:
-----------------------------------
Assignee: Aman Poonia
> Concurrent modification in RegionNormalizerWorkQueue
> ----------------------------------------------------
>
> Key: HBASE-27384
> URL: https://issues.apache.org/jira/browse/HBASE-27384
> Project: HBase
> Issue Type: Bug
> Components: Normalizer
> Affects Versions: 2.4.14
> Reporter: Aman Poonia
> Assignee: Aman Poonia
> Priority: Minor
>
> {*}Error:
> java.util.ConcurrentModificationException{*}{{{}java.util.concurrent.ExecutionException:
> java.util.ConcurrentModificationException at
> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
> at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1928) at
> org.apache.hadoop.hbase.master.normalizer.TestRegionNormalizerWorkQueue.testTake(TestRegionNormalizerWorkQueue.java:211)
> 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:61) at
> org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at
> org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
> at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at
> org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at
> org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at
> org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at
> org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at
> org.apache.hadoop.hbase.SystemExitRule$1.evaluate(SystemExitRule.java:39) at
> org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:288)
> at
> org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:282)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266) at
> java.lang.Thread.run(Thread.java:750) Caused by:
> java.util.ConcurrentModificationException at
> java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719)
> at java.util.LinkedHashMap$LinkedKeyIterator.next(LinkedHashMap.java:742) at
> org.apache.hadoop.hbase.master.normalizer.RegionNormalizerWorkQueue.take(RegionNormalizerWorkQueue.java:192)
> at
> org.apache.hadoop.hbase.master.normalizer.TestRegionNormalizerWorkQueue.lambda$testTake$3(TestRegionNormalizerWorkQueue.java:192)
> at
> java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640)
> at
> java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1632)
> at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at
> java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
> at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at
> java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:175){}}}
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