docs: add guides on deleting entities (#7636)

Co-authored-by: Hyejin Yoon <yoonhyejin@Hyejins-MacBook-Pro.local>
Co-authored-by: Hyejin Yoon <yoonhyejin@ip-192-168-0-10.us-west-2.compute.internal>

docs-website/sidebars.js

@@ -388,6 +388,11 @@ module.exports = {
                 "docs/api/tutorials/adding-lineage",
               ],
             },
+            {
+              "Deleting Entities": [
+                "docs/api/tutorials/deleting-entities-by-urn",
+              ],
+            },
             {
               Reference: [
                 "docs/api/tutorials/references/generate-access-token",

docs/api/datahub-apis.md

@@ -59,7 +59,7 @@ DataHub supports several APIs, each with its own unique usage and format.
 Here's an overview of what each API can do.
 
 
-> Last Updated : Mar 15 2023
+> Last Updated : Mar 21 2023
 
 | Feature                                                 | GraphQL                                                         | Python SDK                                                     | OpenAPI |
 |---------------------------------------------------------|-----------------------------------------------------------------|----------------------------------------------------------------|---------|
@@ -74,7 +74,8 @@ Here's an overview of what each API can do.
 | Add owner to a dataset                                  | ✅ [[Guide]](/docs/api/tutorials/adding-ownerships.md)           | ✅                                                              | ✅       |
 | Add lineage                                             | ✅ [[Guide]](/docs/api/tutorials/adding-lineage.md)              | ✅ [[Guide]](/docs/api/tutorials/adding-lineage.md)             | ✅       |
 | Add column level(Fine Grained) lineage                  | 🚫                                                              | ✅                                                              | ✅       |
-| Add documentation(Description) to a column of a dataset | ✅ [[Guide]](/docs/api/tutorials/adding-column-description.md)   | ✅ [[Guide]](/docs/api/tutorials/adding-column-description.md)  | ✅       |
-| Add documentation(Description) to a dataset             | 🚫                                                              | ✅ [[Guide]](/docs/api/tutorials/adding-dataset-description.md) | ✅       |
-| Delete a dataset                                        | 🚫                                                              | ✅                                                              | ✅       |
+| Add documentation(description) to a column of a dataset | ✅ [[Guide]](/docs/api/tutorials/adding-column-description.md)   | ✅ [[Guide]](/docs/api/tutorials/adding-column-description.md)  | ✅       |
+| Add documentation(description) to a dataset             | 🚫                                                              | ✅ [[Guide]](/docs/api/tutorials/adding-dataset-description.md) | ✅       |
+| Delete a dataset (Soft delete)                          | ✅ [[Guide]](/docs/api/tutorials/deleting-entities-by-urn.md)                                                                 | ✅ [[Guide]](/docs/api/tutorials/deleting-entities-by-urn.md)     | ✅       |
+| Delete a dataset (Hard delele)                          | 🚫                                                              | ✅ [[Guide]](/docs/api/tutorials/deleting-entities-by-urn.md)     | ✅       |
 | Search a dataset                                        | ✅                                                               | ✅                                                              | ✅       |

docs/api/tutorials/deleting-entities-by-urn.md

@@ -0,0 +1,96 @@
+# Deleting Entities By Urn
+
+## Why Would You Delete Entities? 
+You may want to delete a dataset if it is no longer needed, contains incorrect or sensitive information, or if it was created for testing purposes and is no longer necessary in production.
+It is possible to [delete entities via CLI](/docs/how/delete-metadata.md), but a programmatic approach is necessary for scalability.
+
+There are two methods of deletion: soft delete and hard delete.
+**Soft delete** sets the Status aspect of the entity to Removed, which hides the entity and all its aspects from being returned by the UI. 
+**Hard delete** physically deletes all rows for all aspects of the entity.
+
+For more information about soft delete and hard delete, please refer to [Removing Metadata from DataHub](/docs/how/delete-metadata.md#delete-by-urn).
+
+### Goal Of This Guide
+This guide will show you how to delete a dataset named `fct_user_deleted`.
+However, you can delete other entities like tags, terms, and owners with the same approach. 
+
+## Prerequisites
+For this tutorial, you need to deploy DataHub Quickstart and ingest sample data. 
+For detailed steps, please refer to [Prepare Local DataHub Environment](/docs/api/tutorials/references/prepare-datahub.md).
+
+## Delete Datasets With GraphQL
+
+> 🚫 Hard delete with GraphQL is currently not supported. 
+> Please check out [API feature comparison table](/docs/api/datahub-apis.md#datahub-api-comparison) for more information.
+
+
+### GraphQL Explorer
+GraphQL Explorer is the fastest way to experiment with GraphQL without any dependancies. 
+Navigate to GraphQL Explorer (`http://localhost:9002/api/graphiql`) and run the following query.
+
+```json
+mutation batchUpdateSoftDeleted {
+    batchUpdateSoftDeleted(input: 
+      { urns: ["urn:li:dataset:(urn:li:dataPlatform:hive,fct_users_deleted,PROD)"], 
+        deleted: true })
+}
+```
+If you see the following response, the operation was successful:
+```json
+{
+  "data": {
+    "batchUpdateSoftDeleted": true
+  },
+  "extensions": {}
+}
+```
+
+### CURL
+
+With CURL, you need to provide tokens. To generate a token, please refer to [Generate Access Token](/docs/api/tutorials/references/generate-access-token.md). 
+With `accessToken`, you can run the following command.
+
+```shell
+curl --location --request POST 'http://localhost:8080/api/graphql' \
+--header 'Authorization: Bearer <my-access-token>' \
+--header 'Content-Type: application/json' \
+--data-raw '{ "query": "mutation batchUpdateSoftDeleted { batchUpdateSoftDeleted(input: { deleted: true, urns: [\"urn:li:dataset:(urn:li:dataPlatform:hive,fct_users_deleted,PROD)\"] }) }", "variables":{}}'
+```
+
+Expected Response:
+```json
+{"data":{"batchUpdateSoftDeleted":true},"extensions":{}}
+```
+
+## Delete Datasets With Python SDK
+
+The following code deletes a hive dataset named `fct_users_deleted`.
+You can refer to the complete code in [delete_dataset.py](https://github.com/datahub-project/datahub/blob/master/metadata-ingestion/examples/library/delete_dataset.py).
+
+```python
+import logging
+from datahub.cli import delete_cli
+from datahub.emitter.rest_emitter import DatahubRestEmitter
+from datahub.emitter.mce_builder import make_dataset_urn
+
+log = logging.getLogger(__name__)
+logging.basicConfig(level=logging.INFO)
+
+rest_emitter = DatahubRestEmitter(gms_server="http://localhost:8080")
+dataset_urn = make_dataset_urn(name="fct_users_created", platform="hive")
+
+delete_cli._delete_one_urn(urn=dataset_urn, soft=true, cached_emitter=rest_emitter)
+
+log.info(f"Deleted dataset {dataset_urn}")
+```
+
+We're using the `MetdataChangeProposalWrapper` to change entities in this example.
+For more information about the `MetadataChangeProposal`, please refer to [MetadataChangeProposal & MetadataChangeLog Events](/docs/advanced/mcp-mcl.md)
+
+
+## Expected Outcomes
+The dataset `fct_users_deleted` has now been deleted, so if you search for a hive dataset named `fct_users_delete`, you will no longer be able to see it.
+
+![dataset-deleted](../../imgs/apis/tutorials/dataset-deleted.png)
+
+

metadata-ingestion/examples/library/delete_dataset.py

@@ -0,0 +1,15 @@
+import logging
+
+from datahub.cli import delete_cli
+from datahub.emitter.mce_builder import make_dataset_urn
+from datahub.emitter.rest_emitter import DatahubRestEmitter
+
+log = logging.getLogger(__name__)
+logging.basicConfig(level=logging.INFO)
+
+rest_emitter = DatahubRestEmitter(gms_server="http://localhost:8080")
+dataset_urn = make_dataset_urn(name="fct_users_created", platform="hive")
+
+delete_cli._delete_one_urn(urn=dataset_urn, soft=True, cached_emitter=rest_emitter)
+
+log.info(f"Deleted dataset {dataset_urn}")