tree 9ceef5c4ea68db5c5484939680be907e9fc0e6f4
parent 4551b471eae9307769ca2babe0c41255a7edb47f
author Sergiy Matusevych <motus@apache.org> 1493252480 -0700
committer Markus Weimer <weimer@apache.org> 1494034352 -0700

[REEF-1787] Unmanaged REEF on Spark packages global.jar resources incorrectly

Fix `JARFileMaker` class to handle symlinks to symlinks properly;
add logging and refactor for readability and maintainability;
add collectionutils tools for empty or null arrays.

JIRA:
  [REEF-1787](https://issues.apache.org/jira/browse/REEF-1787)

Pull Request:
  This closes #1299