create model/task index with correct mapping

[ylwu-amzn]

Signed-off-by: Yaliang Wu ylwu@amazon.com

Description

We found security test testReadOnlyUser_CanSearchModels failed. Debug locally and found ML model index mapping is wrong: filed algorithm was set as text type
So when search with this query, will return empty result.

POST /_plugins/_ml/models/_search
{
  "query": {
    "bool": {
      "filter": [
        {
          "term": {
            "algorithm": "KMEANS"
          }
        }
      ]
    }
  }
}

This PR fix this bug by setting mapping in create index request. Will backport this to 2.x and 2.0.

Bug introduced in this PR #257

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc 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-commenter]

Codecov Report

Merging #284 (525ee41) into main (972228d) will decrease coverage by 0.18%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main     #284      +/-   ##
============================================
- Coverage     92.16%   91.98%   -0.19%     
+ Complexity      360      359       -1     
============================================
  Files            51       51              
  Lines          1111     1111              
  Branches         51       51              
============================================
- Hits           1024     1022       -2     
- Misses           69       70       +1     
- Partials         18       19       +1     

Flag	Coverage Δ
ml-commons	91.98% <100.00%> (-0.19%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...va/org/opensearch/ml/indices/MLIndicesHandler.java	75.75% <100.00%> (ø)
.../java/org/opensearch/ml/task/MLTaskDispatcher.java	96.22% <0.00%> (-3.78%)	⬇️

---

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[opensearch-trigger-bot]

The backport to 1.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-1.x 1.x
# Navigate to the new working tree
cd .worktrees/backport-1.x
# Create a new branch
git switch --create backport/backport-284-to-1.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 0bae1348c80463ea40f193d0db8f8ccfd2467dd0
# Push it to GitHub
git push --set-upstream origin backport/backport-284-to-1.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-1.x

Then, create a pull request where the base branch is 1.x and the compare/head branch is backport/backport-284-to-1.x.

[opensearch-trigger-bot]

The backport to 1.3 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-1.3 1.3
# Navigate to the new working tree
cd .worktrees/backport-1.3
# Create a new branch
git switch --create backport/backport-284-to-1.3
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 0bae1348c80463ea40f193d0db8f8ccfd2467dd0
# Push it to GitHub
git push --set-upstream origin backport/backport-284-to-1.3
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-1.3

Then, create a pull request where the base branch is 1.3 and the compare/head branch is backport/backport-284-to-1.3.