Fixed content-type for /hot_threads.

[dblock]

Description

Fixed content-type for /hot_threads. Added tests.
Moved hotthreads to superseded operations.

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[github-actions]

Changes Analysis

Commit SHA: f3b8bab
Comparing To SHA: b3f9788

API Changes

Summary

└─┬Paths
  ├─┬/_nodes/hotthreads
  │ └─┬GET
  │   ├──[🔀] operationId (13010:20)❌ 
  │   ├─┬Responses
  │   │ └─┬200
  │   │   └──[➕] content (26460:21)
  │   └─┬Extensions
  │     ├──[➖] x-deprecation-message (3302:30)❌ 
  │     └──[➖] x-version-deprecated (3304:29)❌ 
  ├─┬/_cluster/nodes/{node_id}/hot_threads
  │ └─┬GET
  │   └─┬Responses
  │     └─┬200
  │       └──[➕] content (26460:21)
  ├─┬/_cluster/nodes/hot_threads
  │ └─┬GET
  │   └─┬Responses
  │     └─┬200
  │       └──[➕] content (26460:21)
  ├─┬/_cluster/nodes/hotthreads
  │ └─┬GET
  │   ├──[🔀] operationId (12929:20)❌ 
  │   ├─┬Responses
  │   │ └─┬200
  │   │   └──[➕] content (26460:21)
  │   └─┬Extensions
  │     └──[🔀] x-deprecation-message (12933:30)
  ├─┬/_nodes/hot_threads
  │ └─┬GET
  │   └─┬Responses
  │     └─┬200
  │       └──[➕] content (26460:21)
  ├─┬/_nodes/{node_id}/hot_threads
  │ └─┬GET
  │   └─┬Responses
  │     └─┬200
  │       └──[➕] content (26460:21)
  ├─┬/_cluster/nodes/{node_id}/hotthreads
  │ └─┬GET
  │   ├──[🔀] operationId (12956:20)❌ 
  │   ├─┬Responses
  │   │ └─┬200
  │   │   └──[➕] content (26460:21)
  │   └─┬Extensions
  │     └──[🔀] x-deprecation-message (12960:30)
  └─┬/_nodes/{node_id}/hotthreads
    └─┬GET
      ├──[🔀] operationId (12984:20)❌ 
      ├─┬Responses
      │ └─┬200
      │   └──[➕] content (26460:21)
      └─┬Extensions
        ├──[➖] x-deprecation-message (3110:30)❌ 
        └──[➖] x-version-deprecated (3112:29)❌ 

Document Element	Total Changes	Breaking Changes
paths	18	4

• ❌ BREAKING Changes: 4 out of 18
• Modifications: 6
• Removals: 4
• Additions: 8
• Breaking Removals: 4
• Breaking Modifications: 4

Report

The full API changes report is available at: https://github.com/opensearch-project/opensearch-api-specification/actions/runs/10632763599/artifacts/1874573007

API Coverage

	Before	After	Δ
Covered (%)	533 (52.2 %)	533 (52.2 %)	0 (0 %)
Uncovered (%)	488 (47.8 %)	488 (47.8 %)	0 (0 %)
Unknown	26	26	0

[github-actions]

Spec Test Coverage Analysis

Total	Tested
559	246 (44.01 %)

[nhtruong]

Loving seeing a bunch of deletions thanks to this 🥳