[Docs] Fluss/flink - Iceberg quickstart guide

[MehulBatra]

Purpose

Linked issue: close #1727

Brief change log

1. Added flink-iceberg.md for iceberg related fluss quickstart guide using hadoop catalog
2. Modified flink.md to flink-paimon.md for seperation and changed header for the same
3. Added a note explaining that the $lake suffix and metadata tables functionality (like
   $lake$snapshots) is currently in development and referenced issue Lake table decouple with Paimon #1559.
4. Added both the files in quickstart section
5. Added hadoop jar support in flink-dist plugins.xml for hadoop catalog

Tests

Verified the guide by running manually on my local

API and Format

Documentation

[Copilot]

Pull Request Overview

This PR adds a new Iceberg quickstart guide for Fluss, demonstrating real-time analytics with Flink and Apache Iceberg integration using Hadoop catalog. It separates the existing Flink guide to focus on Paimon, creating distinct documentation paths for different lake storage formats.

Key Changes:

• Created new Flink-Iceberg quickstart guide with comprehensive tutorial including Docker setup, table creation, and lakehouse integration
• Renamed existing Flink guide to specify Paimon integration and updated references
• Added Hadoop JAR support in distribution plugins for Iceberg catalog functionality

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
website/docs/quickstart/flink-paimon.md	Updated title to specify Paimon integration
website/docs/quickstart/flink-iceberg.md	New comprehensive Iceberg quickstart guide with Docker setup and examples
website/docs/intro.md	Updated quickstart link to point to Paimon-specific guide
fluss-dist/src/main/assemblies/plugins.xml	Added Hadoop JAR dependency for Iceberg plugin support

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[luoyuxia]

@MehulBatra Thanks for the pr. Left some comments.

[MehulBatra]

Thank you @luoyuxia for the review and feedback, addressed your comments, please have a look!

[luoyuxia]

@MehulBatra Thanks for update.
1: The ci fail
2: Also, I notice in the descrition #1727 (comment), it's suggested paimon to be a tab, iceberg to be another tab instead of pages. Is it possible to make them as tabs. I think tabs will be more unified to avoid introduce two many pages.

[luoyuxia]

@MehulBatra Thanks for update. 1: The ci fail 2: Also, I notice in the descrition #1727 (comment), it's suggested paimon to be a tab, iceberg to be another tab instead of pages. Is it possible to make them as tabs. I think tabs will be more unified to avoid introduce two many pages.

If make them as tabs is not easy, I don't mind change them to tabs in another pr.

[MehulBatra]

@MehulBatra Thanks for update. 1: The ci fail 2: Also, I notice in the descrition #1727 (comment), it's suggested paimon to be a tab, iceberg to be another tab instead of pages. Is it possible to make them as tabs. I think tabs will be more unified to avoid introduce two many pages.

If make them as tabs is not easy, I don't mind change them to tabs in another pr.

I think we can take that as a seperate PR as it will introduce more changes, I am thinking to get this merged before flink forward session

[MehulBatra]

somehow it's passing in my local but failing here 😓

[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

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[luoyuxia]

@MehulBatra I revert to refer to flink.md, then every thing works well. I suggest to still use flink.md since in the following pr, we will just have one page flink.md, but two tabls for paimon and iceberg.

[luoyuxia]

@MehulBatra Left some comments again. PTAL

[luoyuxia]

+1