[FLINK-8737] Creating a union of UnionGate instances will fail with UnsupportedOperationException when retrieving buffers

• Type: Sub-task
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Component/s: Runtime / Network
• Assignee: Nico Kruber
• Reporter: Nico Kruber
• Created: 21/Feb/18 17:12
• Updated: 02/Oct/19 17:45
• Resolved: 28/Feb/18 17:11

Description

FLINK-8589 introduced a new polling method but did not implement UnionInputGate#pollNextBufferOrEvent(). This prevents UnionGate instances from containing a UnionGate instance which is explicitly allowed by its documentation and interface.

Issue Links

• links to: GitHub Pull Request #5583