[GitHub] [flink] zentol opened a new pull request #8271: [FLINK-8640][build][travis] Enable japicmp on Java 9

[GitBox <gi...@apache.org>]

zentol opened a new pull request #8271:  [FLINK-8640][build][travis] Enable japicmp on Java 9 
URL: https://github.com/apache/flink/pull/8271
 
 
   ## What is the purpose of the change
   
   The `japicmp-plugin` is usable again on java 9+.
   
   ## Brief change log
   
   * add explicit Java EE dependencies that the plugin requires, which are no longer available by default on Java 9+
   * modify `hadoop-common` `jdk.tools` exclusion; this (system-provided) dependency is no longer available on java 9+ and thus has to be excluded. Defining the dependencies in the `dependencyManagement` section without a version lead to build failures (for _some_ reason), so we now also specify the hadoop version which just works out. Also adds such an exclusion for `hadoop-annotations`, which was simply missing. Note that this is an issue during *compile*  time; there are no repercussions on the runtime (by virtue of being about system dependencies).
   * enable japicmp in our java 9 builds
   
   ## Verifying this change
   
   Run plugin locally or on travis on java 9.
   

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