[REEF-15] Unify utils classes

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Component/s: All
• Assignee: Unassigned
• Reporter: Markus Weimer
• Created: 26/Oct/14 22:59
• Updated: 14/Nov/14 18:03
• Resolved: 14/Nov/14 18:03

Description

REEF, Tang and Wake (and the several other subprojects) all have various utils packages that we should unify. For instance, there is a{{Pair}} class in reef-io and reef-common and there is a Tuple in reef-io that serves the same purpose.

I propose to move all of these utilities into a common package org.apache.reef.utils with subpackages named after standard Java package names. For instance, the Pair, Tuple and MonotonicSet classes all would be in org.apache.reef.utils.collections.

Also, those utilities should be in a new submodule called reef-utils which may not depend on anything but the JDK. That way, we don't run the risk of blowing up the dependency tree of current users.

Issue Links

• links to: The PR for this