Hi Thomas,
  Could you verify this by just testing the trunk without your patch? You
might very well be right that those tests are a little flaky.

As for the hudson builds, Nigel is working on getting the patch builds for
zookeeper running. As soon as that gets fixed this flaky tests would show up
more often. 


On 10/20/10 11:48 PM, "Thomas Koch" <tho...@koch.ro> wrote:

> Hi,
> last night I let my hudson server do 42 (sic) builds of ZooKeeper trunk. One
> of this builds failed:
> junit.framework.AssertionFailedError: Leader hasn't joined: 5
>         at org.apache.zookeeper.test.FLETest.testLE(FLETest.java:312)
> I did this many builds of trunk, because in my quest to redo the client netty
> integration step by step I made one step which resulted in 2 failed builds out
> of 8. The two failures were both:
> junit.framework.AssertionFailedError: Threads didn't join
>         at
> I can't find any relationship between the above test and my changes. The test
> does not use the ZooKeeper client code at all. So I begin to believe that
> there are some Heisenbugs, Bohrbugs or Mandelbugs[1] in ZooKeeper that just
> happen to show up from time to time without any relationship to the current
> changes.
> I'll try to investigate the cause further, maybe there is some relationship
> I've not yet found. But if my assumption should apply, then these kind of bugs
> would be a strong argument in favor of refactoring. These bugs are best found
> by cleaning the code, most important implementing strict separation of
> concerns.
> Wouldn't you like to setup Hudson to build ZooKeeper trunk every half an hour?
> [1] http://en.wikipedia.org/wiki/Unusual_software_bug
> Best regards,
> Thomas Koch, http://www.koch.ro

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