Parsoid/Parser Unification/Confidence Framework/Reports

Questions to answer for report assessment

• What’s the visual diff score? What will make us confident to deploy based on this score?
• Are there specific extensions critical to Wikitech DiscussionTools that are not yet supported?
• Are there missing functionalities in Parsoid that will impact this deployment?
• What’s the rollback plan in case needed?
• What would be the main concern and reason to postpone this deployment?
• What’s your proposed confidence score?
  • Not confident at all
  • Not confident
  • Somewhat confident
  • Confident
  • Extremely confident

Deployment Readiness for Wikitech DiscussionTools

Visual Difference Score Assessment

Current Status:

• Pixel Perfect Rendering: Achieved for 95.7% of approximately 6250 talk pages tested.
• Minor Issues: 99.9% of pages show pixel perfect or only minor vertical whitespace shifts.
• Known Differences: 0.1% of pages have known differences (not planned for fixing).
• Critical Differences: None.

Considerations for Deployment:

• Reliability: The high percentage of pixel-perfect rendering (98.55%) is a strong indicator of the system’s reliability.
• Pending Reassessment: None
• Blocker Evaluation: None

Extension and Functionality Support

Critical Extensions:

• Assumption: Extensions critical for Wikitech DiscussionTools are presumed to be identified in the visual diff process.

Functionality Concerns:

• Login vs. Logout Issue: None
• Legacy Parser Compatibility: A strategy is needed to ensure that deployment of the new system does not disrupt the recording of metadata by the legacy parser.

Rollback Strategy

• Procedure: A full rollback is planned if any significant issues are observed post-deployment.

Main Concerns and Potential Delay

• Current Stance: As of now, there are no major concerns that would necessitate postponing the deployment.
• Dependent Factors: None.

Proposed Confidence Score for Deployment

• Score: Confidence in the rollout is extremely high.