[STORM-1945] Internal Server Error shown on topology page for topology using KafkaSpout

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.0.0, 1.1.0
• Fix Version/s: 2.0.0, 1.1.0
• Component/s: storm-ui
• Epic Link: Release Apache Storm 1.1.0
• Assignee: Jungtaek Lim
• Reporter: Jungtaek Lim
• Created: 06/Jul/16 13:25
• Updated: 08/Jul/16 06:59
• Resolved: 08/Jul/16 06:59

Description

When opening topology page which uses old storm-kafka Spout, page shows Internal Server Error on bottom side.
And REST API /api/v1/topology/:topology/lag also shows Internal Server Error.
Its errorMessage is describing NPE, but stack track gives less help since it's already within catch statement so we can't trace why origin exception is thrown by only looking at errorMessage. And there's no error message on ui log file.

Issue Links

• links to: GitHub Pull Request #1540
• links to: GitHub Pull Request #1541