Handle ALTER Index Queries.

[vmmusings]

Description

• ALTER INDEX syntax updates.
• Handle ALTER INDEX Queries with auto_refresh=false in sql plugin as it requires stopping spark job.
• Sending rest of the ALTER INDEX queries are streaming queries in separate job to spark instance.
• Refactored existing drop operation.
• Introduced rolling back in flint index operations.

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.53%. Comparing base (a84c3ef) to head (4319e3f).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2554      +/-   ##
============================================
+ Coverage     95.47%   95.53%   +0.05%     
- Complexity     5046     5101      +55     
============================================
  Files           486      488       +2     
  Lines         14087    14261     +174     
  Branches        943      958      +15     
============================================
+ Hits          13450    13624     +174     
  Misses          614      614              
  Partials         23       23              

Flag	Coverage Δ
sql-engine	95.53% <100.00%> (+0.05%)	⬆️

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[dai-chen]

This PR also incorporated latest Flint SQL grammar changes below, so there is no need to publish separate PR. @rupal-bq @seankao-az

1. ALTER statement: Add grammar files for alter index opensearch-spark#279
2. BLOOM_FILTER skip type: Add BloomFilter skipping index SQL support opensearch-spark#283
3. ANALYZE statement: Implement analyze skipping index statement opensearch-spark#284

[opensearch-trigger-bot]

The backport to 2.x 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/sql/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/sql/backport-2.x
# Create a new branch
git switch --create backport/backport-2554-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 d11a26865dea8649fa4611084db08230ab9e7382
# Push it to GitHub
git push --set-upstream origin backport/backport-2554-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/sql/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-2554-to-2.x.