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https://issues.apache.org/jira/browse/MAHOUT-1610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14116326#comment-14116326
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Sean Owen commented on MAHOUT-1610:
-----------------------------------
I have seen failures like this in Spark before. I think this is something that
was perhaps partly fixed in upcoming 1.1.0, if I remember correctly. It's a
Spark issue AFAICT.
> Tests can be made more robust to pass in Java 8
> -----------------------------------------------
>
> Key: MAHOUT-1610
> URL: https://issues.apache.org/jira/browse/MAHOUT-1610
> Project: Mahout
> Issue Type: Bug
> Components: Integration
> Affects Versions: 0.9
> Environment: Java 1.8.0_11 OS X 10.9.4
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Minor
> Labels: java8, tests
> Fix For: 1.0
>
>
> Right now, several tests don't seem to pass when run with Java 8 (at least on
> Java 8). The failures are benign, and just due to tests looking for
> too-specific values or expecting things like a certain ordering of hashmaps.
> The tests can easily be made to pass both Java 8 and Java 6/7 at the same
> time by either relaxing the tests in a principled way, or accepting either
> output of two equally valid ones as correct.
> (There's also one curious compilation failure in Java 8, related to generics.
> It is fixable by changing to a more explicit declaration that should be
> equivalent. It should be entirely equivalent at compile time, and of course,
> at run time. I am not sure it's not just a javac bug, but, might as well work
> around when it's so easy.)
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