Cleaned up more

Author: spelluru

articles/event-hubs/use-blob-storage-checkpoint-store-azure-stack-hub.md

@@ -13,30 +13,20 @@ ms.author: spelluru
 ---
 
 # Use Blob Storage as checkpoint store on Azure Stack Hub
-This article explains:
+If you're using Azure Blob Storage as the checkpoint store in an environment that supports a different version of Storage Blob SDK than the ones that are typically available on Azure, you'll need to use code to change the Storage service API version to the specific version supported by that environment. For example, if you're running [Event Hubs on an Azure Stack Hub version 2002](https://docs.microsoft.com/azure-stack/user/event-hubs-overview), the highest available version for the Storage service is version 2017-11-09. In this case, you'll need to use the code to change the Storage service API version to 2017-11-09. For an example on how to target a specific Storage API version, see these samples on GitHub: 
 
-- What a checkpointing is
-- How Blob Storage can be used as a checkpoint store
-- Additional steps for using Blob Storage on Azure Stack Hub 
-
-## Checkpointing
-Checkpointing is a process that event readers use to mark their position within a sequence of events in a partition. If a reader disconnects from a partition and then reconnects, it begins reading at the checkpoint that was previously submitted by the last reader of that partition in the consumer group. When the reader connects, it passes the offset to the event hub to specify the location at which to start reading. In this way, you can use checkpointing to both mark events as "complete" by downstream applications, and to provide resiliency if a failover between readers that run on different machines occurs. 
-
-For more information, see [Balance partition load across multiple instances of your application](event-processor-balance-partition-load.md)).
-
-## Blob Storage as a checkpoint store
-When the checkpoint is performed to mark an event as processed, an entry in checkpoint store is added or updated with the event's offset and sequence number. You can use Azure Blob Storage as a checkpoint store. For an example of using Blob Storage as a checkpoint store, see the following samples on GitHub: [.NET](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/eventhub/Azure.Messaging.EventHubs.Processor/samples/Sample04_BasicCheckpointing.cs), [Java](https://github.com/Azure/azure-sdk-for-java/tree/master/sdk/eventhubs/azure-messaging-eventhubs-checkpointstore-blob/), [JavaScript and TypeScript](https://github.com/Azure/azure-sdk-for-js/tree/master/sdk/eventhub/eventhubs-checkpointstore-blob), Python - [Synchronous](https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/eventhub/azure-eventhub-checkpointstoreblob/samples) and [Asynchronous](https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/eventhub/azure-eventhub-checkpointstoreblob-aio/samples).
-
-## Blob Storage on Azure Stack Hub
-If you're using Azure Blob Storage as the checkpoint store in an environment that supports a different version of Storage Blob SDK than the ones that are typically available on Azure, you'll need to use code to change the Storage service API version to the specific version supported by that environment. For example, if you're running [Event Hubs on an Azure Stack Hub version 2002](https://docs.microsoft.com/azure-stack/user/event-hubs-overview), the highest available version for the Storage service is version 2017-11-09. In this case, you'll need to use the code to change the Storage service API version to 2017-11-09. For an example on how to target a specific Storage API version, see these samples on GitHub: [.NET](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/eventhub/Azure.Messaging.EventHubs.Processor/samples/Sample10_RunningWithDifferentStorageVersion.cs), [Java](https://github.com/Azure/azure-sdk-for-java/blob/master/sdk/eventhubs/azure-messaging-eventhubs-checkpointstore-blob/src/samples/java/com/azure/messaging/eventhubs/checkpointstore/blob/EventProcessorWithOlderStorageVersion.java). [JavaScript](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/eventhub/eventhubs-checkpointstore-blob/samples/receiveEventsWithDownleveledStorage.js) or  [TypeScript](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/eventhub/eventhubs-checkpointstore-blob/samples/receiveEventsWithDownleveledStorage.ts), Python - [Synchronous](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/eventhub/azure-eventhub-checkpointstoreblob/samples/event_processor_blob_storage_example_with_storage_api_version.py), [Asynchronous](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/eventhub/azure-eventhub-checkpointstoreblob-aio/samples/event_processor_blob_storage_example_with_storage_api_version.py)
+- [.NET](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/eventhub/Azure.Messaging.EventHubs.Processor/samples/Sample10_RunningWithDifferentStorageVersion.cs)
+- [Java](https://github.com/Azure/azure-sdk-for-java/blob/master/sdk/eventhubs/azure-messaging-eventhubs-checkpointstore-blob/src/samples/java/com/azure/messaging/eventhubs/checkpointstore/blob/EventProcessorWithOlderStorageVersion.java). 
+- [JavaScript](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/eventhub/eventhubs-checkpointstore-blob/samples/receiveEventsWithDownleveledStorage.js) or  [TypeScript](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/eventhub/eventhubs-checkpointstore-blob/samples/receiveEventsWithDownleveledStorage.ts), 
+- Python - [Synchronous](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/eventhub/azure-eventhub-checkpointstoreblob/samples/event_processor_blob_storage_example_with_storage_api_version.py), [Asynchronous](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/eventhub/azure-eventhub-checkpointstoreblob-aio/samples/event_processor_blob_storage_example_with_storage_api_version.py)
 
 If you run Event Hubs receiver that uses Blob Storage without targeting the version that Azure Stack Hub supports, you'll receive the following error message:
 
 ```bash
 The value for one of the HTTP headers is not in the correct format
 ```
 
-### Sample error message in Python
+## Sample error message in Python
 For Python, an error of `azure.core.exceptions.HttpResponseError` is passed to the error handler `on_error(partition_context, error)` of `EventHubConsumerClient.receive()`. But, method `receive()` doesn't raise an exception. print(error) will print the following exception information:
 
 ```bash