Added time_in_execution attribute to /_cluster/pending_tasks response

[gargmanik13]

Description

Added time_in_execution attribute to /_cluster/pending_tasks response

• For task under execution we will get execution time in response
• For all other tasks, this will be zero

 OpenSearch git:(time_execution_metrics) ✗ curl -X GET "localhost:9200/_cluster/pending_tasks?pretty" \
     -H 'Content-Type: application/json'
{
  "tasks" : [
    {
      "insert_order" : 5,
      "priority" : "URGENT",
      "source" : "create-index [my_new_index], cause [api]",
      "executing" : true,
      "time_in_queue_millis" : 19703,
      "time_in_queue" : "19.7s",
      "time_in_execution_millis" : 19701,
      "time_in_execution" : "19.7s"
    },
    {
      "insert_order" : 6,
      "priority" : "URGENT",
      "source" : "create-index [my_new_index_2], cause [api]",
      "executing" : false,
      "time_in_queue_millis" : 8999,
      "time_in_queue" : "8.9s",
      "time_in_execution_millis" : 0,
      "time_in_execution" : "0s"
    },
    {
      "insert_order" : 7,
      "priority" : "URGENT",
      "source" : "create-index [my_new_index_3], cause [api]",
      "executing" : false,
      "time_in_queue_millis" : 3123,
      "time_in_queue" : "3.1s",
      "time_in_execution_millis" : 0,
      "time_in_execution" : "0s"
    }
  ]
}

Related Issues

Resolves #11818

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[github-actions]

❌ Gradle check result for 8294f2e: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 679819b: FAILURE

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[github-actions]

❕ Gradle check result for 70f29b9: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Attention: Patch coverage is 48.27586% with 15 lines in your changes missing coverage. Please review.

Project coverage is 72.66%. Comparing base (d52cefa) to head (b655665).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
...opensearch/cluster/service/PendingClusterTask.java	0.00%	9 Missing ⚠️
...min/cluster/tasks/PendingClusterTasksResponse.java	0.00%	4 Missing ⚠️
...rrent/PrioritizedOpenSearchThreadPoolExecutor.java	87.50%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #17780      +/-   ##
============================================
- Coverage     72.74%   72.66%   -0.09%     
+ Complexity    67767    67752      -15     
============================================
  Files          5497     5497              
  Lines        311815   311840      +25     
  Branches      45261    45266       +5     
============================================
- Hits         226822   226589     -233     
- Misses        66504    66815     +311     
+ Partials      18489    18436      -53     

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[gargmanik13]

❕ Gradle check result for 70f29b9: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

Test Result (1 failure / -2)
org.opensearch.snapshots.DedicatedClusterSnapshotRestoreIT.testSnapshotWithStuckNode

Flaky test - #15806

[github-actions]

✅ Gradle check result for dd64d73: SUCCESS

[rajiv-kv]

LGTM!

[github-actions]

❌ Gradle check result for 8f732f2: FAILURE

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[github-actions]

❕ Gradle check result for 3f8fb8f: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

✅ Gradle check result for b655665: SUCCESS