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Posted to dev@zookeeper.apache.org by "Alexander Shraer (JIRA)" <ji...@apache.org> on 2013/01/22 08:00:17 UTC

[jira] [Commented] (ZOOKEEPER-1594) TestReconfig intermittently fails

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13559437#comment-13559437 ] 

Alexander Shraer commented on ZOOKEEPER-1594:
---------------------------------------------

Marshall, I'm wondering if the bug has something to do with the following: when you create a client, the second parameter to the constructor determines the random seed used by the client. That second parameter I think is supposed to be the client's id, but what is passed is clients.size(). I might be wrong here but I don't see where this vector of clients is cleared in between tests, so is it true that at some point the set size is fixed and all the seeds are the same ?
                
> TestReconfig intermittently fails
> ---------------------------------
>
>                 Key: ZOOKEEPER-1594
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1594
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: c client
>    Affects Versions: 3.5.0
>            Reporter: Marshall McMullen
>            Assignee: Marshall McMullen
>
> We've seen an intermittent failure in one of the C client tests TestReconfig which was committed as part of ZOOKEEPER-1355.
> The test that is failing is failing *before* any rebalancing algorithm is invoked. After inspecting this we've concluded it is a failure to properly seed the random number generator properly. This same problem was seen and solved on the Java client side so we just need to do something similar on the C client side.
> The assertion:
> Build/trunk/src/c/tests/TestReconfig.cc:571: Assertion: assertion failed [Expression: numClientsPerHost.at(i) >= lowerboundClientsPerServer(numClients, numServers)]
> [exec] [exec] Failures !!!
> [exec] [exec] Run: 38 Failure total: 1 Failures: 1 Errors: 0
> [exec] [exec] make: *** [run-check] Error 1
> [exec] 
> [exec] BUILD FAILED
> [exec] /home/jenkins/jenkins-slave/workspace/PreCommit-ZOOKEEPER-Build/trunk/build.xml:1262: The following error occurred while executing this line:
> [exec] /home/jenkins/jenkins-slave/workspace/PreCommit-ZOOKEEPER-Build/trunk/build.xml:1272: exec returned: 2

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