Daniel Widdis

### Is your feature request related to a problem? Part of #356 ### What solution would you like? Update the following registration models to permit removing additions when an extension...

[FEATURE] Implement SDKClusterService.addLocalNodeMasterListener(this)

1

### Is your feature request related to a problem? `AnomalyDetectionIndices` class calls ```java this.clusterService.addLocalNodeMasterListener(this); ``` This doesn't seem to be necessary for extensions. ### What solution would you like? Implement...

[FEATURE] Establish periodic polling of extensions to verify connectivity

2

### Is your feature request related to a problem? Part of #356 ### What solution would you like? Establish periodic polling of extensions to verify connectivity (both ways) - Add...

### Is your feature request related to a problem? One of the goals of extensibility is the ability to add/update/remove an extension without restarting the OpenSearch node. [From #2447](https://github.com/opensearch-project/OpenSearch/issues/2447): >...

### Is your feature request related to a problem? Part of #356 ### What solution would you like? Create REST API calls to add, update, or remove an extension from...

### Is your feature request related to a problem? Part of #356 ### What solution would you like? Create a system index for tracking extensions - store data corresponding to...

[META] Add ability for extensions to require dependencies

3

### Is your feature request related to a problem? Extensions may depend on other extensions. For example, a machine learning model may depend on data cleaning and preparation by another...

### Is your feature request related to a problem? #172 moved test code out of production, which is good. It also removed the existing "main class" associated with `gradle run`...

[BUG] Deleting a not-found model or agent via the MLClient throws an exception

3

**What is the bug?** When using the ML Client to delete a model or agent which does not exist, the ActionListener failure path is followed with an `OpenSearchStatusException` with status...

[META] Migrate feature/multi_tenancy branch to main

5

I will be starting the process of migrating the code developed on the [`feature/multi_tenancy`](https://github.com/opensearch-project/ml-commons/tree/feature/multi_tenancy) branch to `main`. I'm creating this issue to establish context for reviewers and pre-answer some frequently...