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https://issues.apache.org/jira/browse/MAHOUT-2000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16088219#comment-16088219
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ASF GitHub Bot commented on MAHOUT-2000:
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Github user rawkintrevo commented on the issue:
https://github.com/apache/mahout/pull/332
@dustinvanstee looked good. The 'gotchya' was Spark 2.2.0 officially
dropped java 7 support, so those binaries are compiled with java8[1]. I found
that out by googling the error in travis[2]
Because I'm curious- try changing [3] to `openjdk8` and see what happens.
Will need further discusion about releasing Java8 for spark2 compatability on
dev, but first lets see if it works.
[1] https://people.apache.org/~pwendell/spark-releases/latest/
[2]
https://stackoverflow.com/questions/18161907/exception-in-thread-main-java-lang-unsupportedclassversionerror-unsupported-m
[3]
https://github.com/apache/mahout/pull/332/files#diff-354f30a63fb0907d4ad57269548329e3R59
> Add Spark 2.2.0 as supported binary release
> --------------------------------------------
>
> Key: MAHOUT-2000
> URL: https://issues.apache.org/jira/browse/MAHOUT-2000
> Project: Mahout
> Issue Type: Bug
> Reporter: Dustin VanStee
> Assignee: Trevor Grant
>
> Spark 2.2.0 was recently released. This JIRA is for making sure Mahout is
> supported with the spark 2.2.0 backend, and also publishing the binary.
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