DynamoDb replicas field always shows update

[dmattia]

Hello!

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Issue details

I had a DynamoDb table that I managed using another service that I wanted to import into Pulumi. Using the import opt, I could find the resource, but it told me that the replica configuration had a diff, as shown in this image:

I was able to eventually import by adding ignoreChanges: ['replicas'], but now each pulumi up shows the same diff from that image unless I leave in the ignoreChanges block, even though as far as I can tell nothing should change.

Steps to reproduce

1. Create a DynamoDb table with read replicas in the AWS console
2. Create a pulumi resource that matches it exactly (steps 1 and 2 can be done easily by creating the table in pulumi, then deleting the table from state)
3. Import the table into the resource
4. run pulumi up

Expected: No changes would appear in the diff
Actual: The replicas field shows a diff

[mikhailshilkov]

I tried reproducing this issue today but failed to do so. My steps:

1. Create a global table with two replicas. I used this program:

import * as aws from "@pulumi/aws";

const example = new aws.dynamodb.Table("example", {
    attributes: [{
        name: "TestTableHashKey",
        type: "S",
    }],
    billingMode: "PAY_PER_REQUEST",
    hashKey: "TestTableHashKey",
    replicas: [
        {
            regionName: "us-east-2",
        },
        {
            regionName: "us-west-2",
        },
    ],
    streamEnabled: true,
    streamViewType: "NEW_AND_OLD_IMAGES",
});

2. Deployed the above from stack A.
3. Imported the same resource in stack B.
4. Pasted the generated program

import * as aws from "@pulumi/aws";

const example = new aws.dynamodb.Table("example", {
    attributes: [{
        name: "TestTableHashKey",
        type: "S",
    }],
    billingMode: "PAY_PER_REQUEST",
    hashKey: "TestTableHashKey",
    name: "example-1904f44",
    pointInTimeRecovery: {
        enabled: false,
    },
    replicas: [
        {
            regionName: "us-west-2",
        },
        {
            regionName: "us-east-2",
        },
    ],
    streamEnabled: true,
    streamViewType: "NEW_AND_OLD_IMAGES",
    ttl: {
        attributeName: "",
    },
}, {
    protect: true,
});

5. Ran pulumi up and received no diff.

I'll assume the issue has been fixed since 2021.