[NIFI-7242] Parameters update not taken into account in controller services

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.12.0, 1.11.4
• Component/s: Core Framework
• Assignee: Mark Payne
• Reporter: Pierre Villard
• Created: 10/Mar/20 13:33
• Updated: 11/Mar/20 20:04
• Resolved: 11/Mar/20 20:04

Description

There is a bug with the parameters when used in Controller Services:

• when updating a parameter that is referenced in a controller service (in this case avro schema registry), changing the value of the parameter does not seem to trigger the restart of the controller service
• even if I do restart the components manually, the old value of the parameter is still used... NiFi restart is the only way to get the new value applied

With the supplied template, create a Parameter Context with schema =

{
  "type" : "record",
  "name" : "myData",
  "namespace" : "myLine",
  "fields" : [
    {
      "name" : "myField1",
      "type" : "string"
    }
  ]
}

The AvroSchemaRegistry contains the schema with:

schema => #{schema}

Get everything running: output data has only one column. Then update the Parameter Context to have schema =

{
  "type" : "record",
  "name" : "myData",
  "namespace" : "myLine",
  "fields" : [
    {
      "name" : "myField1",
      "type" : "string"
    }, {
      "name" : "myField2",
      "type" : "string"
    }
  ]
}

Output data has still one column only when it should have two with the new schema.

Issue Links

• links to: GitHub Pull Request #4134