opensearch-project / opensearch-project/sql

[FEATURE] Fully cross cluster search in PPL

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enhancement PPL
Dominant language
Java
Stars
176
Forks
229
Avg merge
2d 21h
Merged PRs (30d)
43

Description

Is your feature request related to a problem?
We want to support query assistant in cross cluster search. But the final step of query assistant is to execute the PPL, which is not fully supported now. Currently, we need to mock an index locally firstly. https://github.com/opensearch-project/sql/blob/main/docs/user/ppl/admin/cross_cluster_search.rst#limitation

What solution would you like?
A fully supported CCS PPL execution. We don't need to create a mocked index locally.

What alternatives have you considered?
A clear and concise description of any alternative solutions or features you've considered.

Do you have any additional context?
Add any other context or screenshots about the feature request here.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with docs/user/ppl/admin/cross_cluster_search.rst, especially its documented limitation, and investigate the current PPL execution path for cross-cluster search. Done means PPL executes fully across clusters without requiring a locally mocked index.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, sql
Domain
distributed-systems, search
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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