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https://issues.apache.org/jira/browse/TINKERPOP-2504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17408181#comment-17408181
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Stephen Mallette commented on TINKERPOP-2504:
---------------------------------------------

The 3.5-dev branch had to be rebuilt after some problems with the branch 
structure:

https://lists.apache.org/thread.html/r592cc8abb00729908047d92d8a55e9f980ec1d953d3073b88b2858c3%40%3Cdev.tinkerpop.apache.org%3E

The following commits related to this issue were cherry-picked to 3.5-dev and 
then merged to master with --strategy=ours

0d06b654836f5e8140805d45a07acb712057db8c

> Intermittently failing server/driver integration tests
> ------------------------------------------------------
>
>                 Key: TINKERPOP-2504
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2504
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: driver, server
>    Affects Versions: 3.4.9
>            Reporter: Stephen Mallette
>            Assignee: Stephen Mallette
>            Priority: Minor
>             Fix For: 3.6.0, 3.4.13, 3.5.2
>
>
> I've noticed this test failing intermittently on Travis and more consistently 
> on the {{master}} branch with Docker. It fails with a 
> {{ConcurrentModificationException}} (haven't been able to easily get the 
> entire stack trace thanks to the docker issue and i've not caught it 
> happening in the last few days on Travis). Adding this line of code seems to 
> have made the test pass more consistently:
> https://github.com/apache/tinkerpop/commit/4b099b3c84a350aae953cdf517aa11c7017eb2ae
> which would indicate something perhaps fishy with how hosts are being marked 
> dead and iterated. Would be nice to get rid of that little hack.
> Another common failure that is fairly consistent is with 
> {{GremlinServerAuditLogIntegrateTest.shouldAuditLogWithKrb5Authenticator}}
> {code}
> [ERROR] 
> shouldAuditLogWithKrb5Authenticator(org.apache.tinkerpop.gremlin.server.GremlinServerAuditLogIntegrateTest)
>   Time elapsed: 3.16 s  <<< ERROR!
> java.util.concurrent.ExecutionException: 
> org.apache.tinkerpop.gremlin.driver.exception.ResponseException: 
> Authenticator is not ready to handle requests
>       at 
> org.apache.tinkerpop.gremlin.server.GremlinServerAuditLogIntegrateTest.shouldAuditLogWithKrb5Authenticator(GremlinServerAuditLogIntegrateTest.java:222)
> Caused by: org.apache.tinkerpop.gremlin.driver.exception.ResponseException: 
> Authenticator is not ready to handle requests
> {code} 
> cc/ [~divijvaidya] [~HadoopMarc]



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