[WIP] [POC] Iceberg upgrades

[jiang95-dev]

Summary

Issue] Briefly discuss the summary of the changes made in this pull request in 2-3 lines.

Changes

• [ ] Client-facing API Changes
• [ ] Internal API Changes
• [ ] Bug Fixes
• [ ] New Features
• [ ] Performance Improvements
• [ ] Code Style
• [ ] Refactoring
• [ ] Documentation
• [ ] Tests

For all the boxes checked, please include additional details of the changes made in this pull request.

Testing Done

• [ ] Manually Tested on local docker setup. Please include commands ran, and their output.
• [ ] Added new tests for the changes made.
• [ ] Updated existing tests to reflect the changes made.
• [ ] No tests added or updated. Please explain why. If unsure, please feel free to ask for help.
• [ ] Some other form of testing like staging or soak time in production. Please explain.

For all the boxes checked, include a detailed description of the testing done for the changes made in this pull request.

Additional Information

• [ ] Breaking Changes
• [ ] Deprecations
• [ ] Large PR broken into smaller PRs, and PR plan linked in the description.

For all the boxes checked, include additional details of the changes made in this pull request.