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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9257) TestAsyncProcess#testFailAndSuccess fails sometime due to a race condition
Date Sun, 18 Aug 2013 11:49:47 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13743187#comment-13743187
] 

Hudson commented on HBASE-9257:
-------------------------------

SUCCESS: Integrated in hbase-0.95-on-hadoop2 #250 (See [https://builds.apache.org/job/hbase-0.95-on-hadoop2/250/])
HBASE-9257: TestAsyncProcess#testFailAndSuccess fails sometime due to a race condition (jeffreyz:
rev 1515076)
* /hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java

                
> TestAsyncProcess#testFailAndSuccess fails sometime due to a race condition
> --------------------------------------------------------------------------
>
>                 Key: HBASE-9257
>                 URL: https://issues.apache.org/jira/browse/HBASE-9257
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.0, 0.95.2
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>         Attachments: hbase-9257.patch
>
>
> The test failed in our test env with the following stack. The reason is that we use the
following pattern to check errors:
> {code}
>     while (!ap.hasError()) {
>       Thread.sleep(1);
>     }
>     ...
>     Assert.assertEquals(1, ap.getErrors().actions.size());
> {code}
> While in our product code, we set errors in different order
> {code}
>       ...
>       this.hasError.set(true);
>       errors.add(throwable, row, location);
>       ...
> {code}
> Therefore, a client code may not get error actions when hasError is true due to thread
scheduling.
> {code}
> Test Error Stack:
> java.lang.AssertionError: expected:<1> but was:<0>
>     at org.junit.Assert.fail(Assert.java:88)
>     at org.junit.Assert.failNotEquals(Assert.java:743)
>     at org.junit.Assert.assertEquals(Assert.java:118)
>     at org.junit.Assert.assertEquals(Assert.java:555)
>     at org.junit.Assert.assertEquals(Assert.java:542)
>     at org.apache.hadoop.hbase.client.TestAsyncProcess.testFailAndSuccess(TestAsyncProcess.java:308)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
>     at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>     at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
>     at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>     at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
>     at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
>     at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
>     at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
>     at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
>     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
>     at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
>     at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
>     at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
>     at org.junit.runners.Suite.runChild(Suite.java:127)
>     at org.junit.runners.Suite.runChild(Suite.java:26)
>     at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
>     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
>     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:662)
> {code}

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