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https://issues.apache.org/jira/browse/ZOOKEEPER-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13186661#comment-13186661
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Camille Fournier commented on ZOOKEEPER-1351:
---------------------------------------------
Looks good to me. Will check this in.
> invalid test verification in MultiTransactionTest
> -------------------------------------------------
>
> Key: ZOOKEEPER-1351
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1351
> Project: ZooKeeper
> Issue Type: Bug
> Components: tests
> Affects Versions: 3.4.0
> Reporter: Patrick Hunt
> Assignee: Patrick Hunt
> Fix For: 3.4.3, 3.5.0
>
> Attachments: ZOOKEEPER-1351.patch, ZOOKEEPER-1351_br34.patch
>
>
> tests such as
> org.apache.zookeeper.test.MultiTransactionTest.testWatchesTriggered() are
> incorrect. Two issues I see
> 1) zk.sync is async, there is no guarantee that the watcher will be called
> subsequent to sync returning
> {noformat}
> zk.sync("/", null, null);
> assertTrue(watcher.triggered); /// incorrect assumption
> {noformat}
> The callback needs to be implemented, only once the callback is called can we
> verify the trigger.
> 2) trigger is not declared as volatile, even though it will be set in the
> context of a different thread (eventthread)
> See
> https://builds.apache.org/view/S-Z/view/ZooKeeper/job/ZooKeeper-trunk-solaris/91/testReport/junit/org.apache.zookeeper.test/MultiTransactionTest/testWatchesTriggered/
> for an example of a false positive failure
> {noformat}
> junit.framework.AssertionFailedError
> at
> org.apache.zookeeper.test.MultiTransactionTest.testWatchesTriggered(MultiTransactionTest.java:236)
> at
> org.apache.zookeeper.JUnit4ZKTestRunner$LoggedInvokeMethod.evaluate(JUnit4ZKTestRunner.java:52)
> {noformat}
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