[REEF-851] Fix nondeterministic test bug in CommunicationGroupDriverImplTest

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14
• Component/s: REEF-IO
• Assignee: Joo Seong Jeong
• Reporter: Joo Seong Jeong
• Created: 15/Oct/15 08:12
• Updated: 15/Oct/15 22:02
• Resolved: 15/Oct/15 22:02

Description

The current CommunicationGroupDriverImplTest simulates a group communication situation where various driver threads send out messages to evaluators, using the class ThreadPoolStage. This may cause timeout failures when cores are busy doing other work. Instead we should just use a synchronous stage class for testing, like SyncStage.

Issue Links

• links to: PR 569