[REEF-1651] Improve logging in REEF Remote Manager and related classes

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.16
• Component/s: REEF Driver, REEF-Common
• Labels: debug logging toString
• Assignee: Sergiy Matusevych
• Reporter: Sergiy Matusevych
• Created: 24/Oct/16 18:16
• Updated: 26/Oct/16 00:29
• Resolved: 26/Oct/16 00:29

Description

Currently, it is hard to debug the network IO in REEF Driver and the Evaluators. Many messages and events do not have proper .toString() methods and are not logged. Some messages and errors cannot be traced in the logs, regardless of the logging level.

Issue Links

• relates to: REEF-1637 When launched via REEFEnvironment, Driver does not receive heartbeats from Evaluators