[jira] [Created] (OOZIE-2550) Test case testMultipleIDGeneration_withMultiThread uses an unsynchronized list from two threads

["Peter Bacsko (JIRA)" <ji...@apache.org>]

Peter Bacsko created OOZIE-2550:
-----------------------------------

             Summary: Test case testMultipleIDGeneration_withMultiThread uses an unsynchronized list from two threads
                 Key: OOZIE-2550
                 URL: https://issues.apache.org/jira/browse/OOZIE-2550
             Project: Oozie
          Issue Type: Bug
          Components: tests
            Reporter: Peter Bacsko
            Assignee: Peter Bacsko
            Priority: Minor


Test case testMultipleIDGeneration_withMultiThread in TestZKUUIDService uses an ArrayList which is written by two threads simultaneously. This is dangerous and the list must be externally synchronized to prevent race conditions.

The following error was caught during a test run:

{code}
Tests run: 8, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 53.571 sec <<< FAILURE!
testMultipleIDGeneration_withMultiThread(org.apache.oozie.service.TestZKUUIDService)  Time elapsed: 0.02 sec  <<< ERROR!
java.lang.IndexOutOfBoundsException: Index: 89, Size: 89
        at java.util.ArrayList.rangeCheck(ArrayList.java:653)
        at java.util.ArrayList.get(ArrayList.java:429)
        at org.apache.oozie.service.TestZKUUIDService.testMultipleIDGeneration_withMultiThread(TestZKUUIDService.java:134)
        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 junit.framework.TestCase.runTest(TestCase.java:168)
        at junit.framework.TestCase.runBare(TestCase.java:134)
        at junit.framework.TestResult$1.protect(TestResult.java:110)
        at junit.framework.TestResult.runProtected(TestResult.java:128)
        at junit.framework.TestResult.run(TestResult.java:113)
        at junit.framework.TestCase.run(TestCase.java:124)
        at junit.framework.TestSuite.runTest(TestSuite.java:243)
        at junit.framework.TestSuite.run(TestSuite.java:238)
        at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
        at org.junit.runners.Suite.runChild(Suite.java:128)
        at org.junit.runners.Suite.runChild(Suite.java:24)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
{code}



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