DataStore subscriptionDataProcessed event is dispatched twice

[HuiSF]

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• I have searched for duplicate or closed issues and discussions.

Language and Async Model

Java, Kotlin

Amplify Categories

DataStore

Gradle script dependencies

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Environment information

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Please include any relevant guides or documentation you're referencing

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Describe the bug

Observed from testing with amplify-flutter.

When a GraphQL subscription event arrives, after processing merge the data into local DB, subscriptionDataProcessed event gets dispatched twice via DataStore hub event channel.

It looks like that this spot were executed twice during the merge process following this order:
by 1) here and 2) here

According to the source code and code commends, subscriptionDataProcessed event is dispatched on a successful data merge, which should be dispatched only once. Could you confirm if the current behavior is correct?

Additional context: amplify-ios emits a simple event syncReceived after the merging process triggered by a GraphQL subscription event. And syncReceived event gets dispatched once.

Reproduction steps (if applicable)

1. Trigger a GraphQL subscription from any valid source
2. Observe subscriptionDataProcessed event on DataStore hub

Code Snippet

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Log output

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amplifyconfiguration.json

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GraphQL Schema

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Additional information and screenshots

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