Add OpenSearchCatalog to enable direct access OpenSearch index in Spark SQL

[penghuo]

Description

This PR introduces the OpenSearchCatalog class, enabling Apache Spark to integrate with OpenSearch as a data catalog and direct access OpenSearch Index in Spark SQL. Key features and changes include:

Configuration Parameters

• opensearch.port: Default is 9200.
• opensearch.scheme: Default is http. Valid values are [http, https].
• opensearch.auth: Default is noauth. Valid values are [noauth, sigv4, basic].
• opensearch.auth.username: Basic auth username.
• opensearch.auth.password: Basic auth password.
• opensearch.region: Default is us-west-2. Used only when auth is sigv4.

Implemented Methods

• loadTable: Loads a read only table from the OpenSearch index.
• Unsupported Operations: The following methods throw UnsupportedOperationException:
  • listTables
  • createTable
  • alterTable
  • dropTable
  • renameTable

Follow up

• Support comma separated index name as table identifier.

Doc

https://github.com/penghuo/penghuo-opensearch-spark/blob/issue395/docs/opensearch-table.md

Issues Resolved

https://github.com/opensearch-project/opensearch-spark/issues/395

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[opensearch-trigger-bot[bot]]

The backport to 0.4 failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/opensearch-spark/backport-0.4 0.4
# Navigate to the new working tree
pushd ../.worktrees/opensearch-spark/backport-0.4
# Create a new branch
git switch --create backport/backport-399-to-0.4
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 2d46cff814f111ac932e9d05ab59fe366e9c0d42
# Push it to GitHub
git push --set-upstream origin backport/backport-399-to-0.4
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/opensearch-spark/backport-0.4

Then, create a pull request where the base branch is 0.4 and the compare/head branch is backport/backport-399-to-0.4.