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https://issues.apache.org/jira/browse/ZOOKEEPER-2080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15526260#comment-15526260
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Flavio Junqueira commented on ZOOKEEPER-2080:
---------------------------------------------
The only reason I had to suggest that we use this listener pattern is that we
apparently need the view across a number of classes, so instead of having to
have QP keeping direct references to each of these classes, we simply keep
implementations of some {{ViewListener}} interface. It is unclear to me whether
we need to synchronize on QP when invoking the interface call on each of the
registered instances. Do we need to update all view listeners in a critical
section?
> ReconfigRecoveryTest fails intermittently
> -----------------------------------------
>
> Key: ZOOKEEPER-2080
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2080
> Project: ZooKeeper
> Issue Type: Sub-task
> Reporter: Ted Yu
> Assignee: Michael Han
> Fix For: 3.5.3, 3.6.0
>
> Attachments: ZOOKEEPER-2080.patch, ZOOKEEPER-2080.patch,
> ZOOKEEPER-2080.patch, ZOOKEEPER-2080.patch, ZOOKEEPER-2080.patch,
> jacoco-ZOOKEEPER-2080.unzip-grows-to-70MB.7z, repro-20150816.log,
> threaddump.log
>
>
> I got the following test failure on MacBook with trunk code:
> {code}
> Testcase: testCurrentObserverIsParticipantInNewConfig took 93.628 sec
> FAILED
> waiting for server 2 being up
> junit.framework.AssertionFailedError: waiting for server 2 being up
> at
> org.apache.zookeeper.server.quorum.ReconfigRecoveryTest.testCurrentObserverIsParticipantInNewConfig(ReconfigRecoveryTest.java:529)
> at
> org.apache.zookeeper.JUnit4ZKTestRunner$LoggedInvokeMethod.evaluate(JUnit4ZKTestRunner.java:52)
> {code}
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