Aman Poonia created HBASE-27384:
-----------------------------------
Summary: 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
{*}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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