azurerm_cosmosdb_sql_container doesnt support updates but suggests update will run

[MarkDordoy]

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Terraform (and AzureRM Provider) Version

Terraform v0.12.6
provider.azurerm v1.33.0

Affected Resource(s)

• azurerm_cosmosdb_sql_container

Terraform Configuration Files

# Original setup

resource "azurerm_cosmosdb_sql_container" "termsets_termsettemplates" {
    name                = "termsettemplates"
    resource_group_name = data.azurerm_resource_group.resource_group.name
    account_name        = "mydbname
    database_name       = termsettemplates
    partition_key_path  = "/id"
    unique_key {
        paths = ["/Name"]
    }
}

# Error Occurred when changing to this - Added unique key path

resource "azurerm_cosmosdb_sql_container" "termsets_termsettemplates" {
    name                = "termsettemplates"
    resource_group_name = data.azurerm_resource_group.resource_group.name
    account_name        = "mydbname
    database_name       = termsettemplates
    partition_key_path  = "/id"
    unique_key {
        paths = ["/Name", "/Version"]
    }
}

Debug Output

Terraform will perform the following actions:

  # azurerm_cosmosdb_sql_container.termsets_termsettemplates will be updated in-place
  ~ resource "azurerm_cosmosdb_sql_container" "termsets_termsettemplates" {
        account_name        = "########"
        database_name       = "termsets"
        id                  = "/subscriptions/##########/resourceGroups/#####/providers/Microsoft.DocumentDB/databaseAccounts/#####/apis/sql/databases/termsets/containers/termsettemplates"
        name                = "termsettemplates"
        partition_key_path  = "/id"
        resource_group_name = "#######"

      + unique_key {
          + paths = [
              + "/Name",
              + "/Version",
            ]
        }
      - unique_key {
          - paths = [
              - "/Name",
            ] -> null
        }
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

azurerm_cosmosdb_sql_container.termsets_termsettemplates: Modifying... [id=/subscriptions/####/resourceGroups/####/providers/Microsoft.DocumentDB/databaseAccounts/####/apis/sql/databases/termsets/containers/termsettemplates]

Error: doesn't support update

  on cosmosdb.tf line 175, in resource "azurerm_cosmosdb_sql_container" "termsets_termsettemplates":
 175: resource "azurerm_cosmosdb_sql_container" "termsets_termsettemplates" {

Expected Behavior

I would expect terraform to suggest this would be a destroy and recreate rather than an update

Actual Behavior

Says it will be and update then fails as this is not possible with this resource

Steps to Reproduce

Create a container then try and update the unique key

[MarkDordoy]

Will be fixed in release 1.34.0
Thanks @katbyte

[ghost]

This has been released in version 1.34.0 of the provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading. As an example:

provider "azurerm" {
    version = "~> 1.34.0"
}
# ... other configuration ...

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 [email protected]. Thanks!