Inline Task Getting executed multiple times And giving output as null while it is actually non null

Describe the bug

Inline Task gets executed multiple times and in such cases where the subsequent tasks which refer to output of this inline task sometimes (I have noticed One Attempt of the inline task is running during the same time) it is getting null and causing my Workflow execution is failing at random

Details Conductor version: 3.13.7 Persistence implementation: Postgres Queue implementation: Redis Lock: Redis Workflow definition: Task definition: Inline Task Definition :

{
  "name": "lambda_xx_migrate_0_b52",
  "taskReferenceName": "lambda_xx_migrate_0_b52",
  "inputParameters": {
    "parallelTasks": [
      "e152639b-cc9a-4f9d-83d6-c1d86744225d",
      "c6c119eb-6997-4807-a961-27e211055aac",
      "f35f4800-da23-4129-a8c5-16c9d4294718",
      "91ad9020-b74d-4db3-9c0c-dfe63bd8d441",
      "e9ace7c1-5c83-417e-bdee-458e390c1eb9",
      "5394119a-851e-4f3a-b05d-8fae956e74c9"
    ],
    "expression": "function scriptFun(){ return $.parallelTasks[$.index-1]} scriptFun();",
    "evaluatorType": "javascript",
    "index": "${loop_xx_migrate_0_b52.output.iteration}"
  },
  "type": "INLINE",
  "startDelay": 0,
  "optional": false,
  "asyncComplete": false
}

Subsequent Task Refering to Inline Task

{
  "name": "xx_migrate_0_b52",
  "taskReferenceName": "xx_migrate_0_b52",
  "inputParameters": {
    "parallelTasksList": "${workflow.input.parallelTasksList}",
    "taskId": "${lambda_xx_migrate_0_b52.output.result}"
  },
  "type": "SUB_WORKFLOW",
  "startDelay": 0,
  "subWorkflowParam": {
    "name": "xx_migrate",
    "version": 6
  },
  "optional": false,
  "asyncComplete": false
}

Event handler definition: NA

To Reproduce Steps to reproduce the behavior:

Randomly occurring under high load (large number of workflows getting executed simutaneously

Expected behavior

The Inline task should be executed once or the subsequent implemention should'nt overwrite the

Screenshots Inline Task Getting executed multiple times

Subsequent Task Getting output as null even though the actual result of inline task is non null

See the taskId is given as null , even though it is not

Additional context Add any other context about the problem here.

Netflix / conductor

Inline Task Getting executed multiple times And giving output as null while it is actually non null #3849