[jira] [Commented] (MAHOUT-1644) [JDK8] errors when compile the module math-scala with JDK8 and maven dependency org.scala-lang:scala-library

["Andrew Palumbo (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAHOUT-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14361224#comment-14361224 ] 

Andrew Palumbo commented on MAHOUT-1644:
----------------------------------------

The current Mahout 1.0 master has upgraded to scala version 2.10.4.

> [JDK8] errors when compile the module math-scala with JDK8 and maven dependency org.scala-lang:scala-library
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-1644
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1644
>             Project: Mahout
>          Issue Type: Dependency upgrade
>          Components: build
>    Affects Versions: 0.9
>            Reporter: zhubin
>              Labels: build, maven
>
> [INFO] Compiling 12 source files to /root/bigtop/dl/mahout-distribution-0.9/math-scala/target/classes at 1425956054808
> [ERROR] error: error while loading ConcurrentMap, class file '/usr/java/jdk1.8.0_40/jre/lib/rt.jar(java/util/concurrent/ConcurrentMap.class)' is broken
> [INFO] (bad constant pool tag 15 at byte 2448)
> [ERROR] error: error while loading CharSequence, class file '/usr/java/jdk1.8.0_40/jre/lib/rt.jar(java/lang/CharSequence.class)' is broken
> [INFO] (bad constant pool tag 15 at byte 1501)
> [ERROR] error: error while loading Comparator, class file '/usr/java/jdk1.8.0_40/jre/lib/rt.jar(java/util/Comparator.class)' is broken
> [INFO] (bad constant pool tag 15 at byte 5003)
> [ERROR] three errors found
> The default version of org.scala-lang:scala-library in module math-scala is 2.9.3, and in order to compile with JDK8, it needs to upgrade the scala version to 2.10.3+



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