[FLINK-3835] JSON execution plan not helpful to debug plans with KeySelectors

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.2, 1.1.0
• Fix Version/s: 1.0.3, 1.1.0
• Component/s: API / DataSet
• Assignee: Fabian Hueske
• Reporter: Fabian Hueske
• Created: 27/Apr/16 12:43
• Updated: 28/Feb/19 14:30
• Resolved: 27/Apr/16 14:09

Description

The JSON execution plans are not helpful when debugging plans that include join operators with key selectors. For joins with hash join strategy, the driver strategy shows: "Hybrid Hash (build: Key Extractor)" where (build: Key Extractor) shall help to identify the build side of the join. However, if both inputs use KeySelectors, the build side cannot be identified.

I propose to add the operator id to the build side information. The same issue applied for cross driver strategies.