[EH+SB] Thread Safety Documentation (Azure#31772)

* update thread safety

* client method instances -> clients

* app responsiblity

* remove eventdata

* specify

* list out instances

* update sample

* update readme

* update samples

* update samples

Author: l0lawrence

sdk/eventhub/azure-eventhub/README.md

@@ -20,10 +20,6 @@ The Azure Event Hubs client library allows for publishing and consuming of Azure
 | [Product documentation](https://docs.microsoft.com/azure/event-hubs/)
 | [Samples](https://github.com/Azure/azure-sdk-for-python/tree/main/sdk/eventhub/azure-eventhub/samples)
 
-## _Disclaimer_
-
-_Azure SDK Python packages support for Python 2.7 has ended 01 January 2022. For more information and questions, please refer to https://github.com/Azure/azure-sdk-for-python/issues/20691_
-
 ## Getting started
 
 ### Prerequisites
@@ -98,6 +94,12 @@ its partition; if there are multiple readers on the same partition, then they wi
 For more concepts and deeper discussion, see: [Event Hubs Features](https://docs.microsoft.com/azure/event-hubs/event-hubs-features).
 Also, the concepts for AMQP are well documented in [OASIS Advanced Messaging Queuing Protocol (AMQP) Version 1.0](https://docs.oasis-open.org/amqp/core/v1.0/os/amqp-core-overview-v1.0-os.html).
 
+### Thread safety
+
+We do not guarantee that the EventHubProducerClient or EventHubConsumerClient are thread-safe. We do not recommend reusing these instances across threads. It is up to the running application to use these classes in a thread-safe manner.
+
+The data model type, `EventDataBatch` is not thread-safe. It should not be shared across threads nor used concurrently with client methods.
+
 ## Examples
 
 The following sections provide several code snippets covering some of the most common Event Hubs tasks, including:

sdk/servicebus/azure-servicebus/README.md

@@ -22,10 +22,6 @@ Use the Service Bus client library for Python to communicate between application
 **NOTE**: If you are using version 0.50 or lower and want to migrate to the latest version
 of this package please look at our [migration guide to move from Service Bus V0.50 to Service Bus V7][migration_guide].
 
-## _Disclaimer_
-
-_Azure SDK Python packages support for Python 2.7 ended 01 January 2022. For more information and questions, please refer to https://github.com/Azure/azure-sdk-for-python/issues/20691_
-
 ## Getting started
 
 ### Install the package
@@ -97,6 +93,10 @@ To interact with these resources, one should be familiar with the following SDK
 
 * [ServiceBusMessage][message_reference]: When sending, this is the type you will construct to contain your payload.  When receiving, this is where you will access the payload.
 
+### Thread safety
+
+We do not guarantee that the ServiceBusClient, ServiceBusSender, and ServiceBusReceiver are thread-safe. We do not recommend reusing these instances across threads. It is up to the running application to use these classes in a thread-safe manner.
+
 ## Examples
 
 The following sections provide several code snippets covering some of the most common Service Bus tasks, including:

sdk/servicebus/azure-servicebus/samples/async_samples/auto_lock_renew_async.py

@@ -9,6 +9,10 @@
 Example to show usage of AutoLockRenewer asynchronously:
     1. Automatically renew locks on messages received from non-sessionful entity
     2. Automatically renew locks on the session of sessionful entity
+
+We do not guarantee that this SDK is thread-safe. We do not recommend reusing the ServiceBusClient,
+ ServiceBusSender, ServiceBusReceiver across threads. It is up to the running 
+ application to use these classes in a thread-safe manner.
 """
 
 import os

sdk/servicebus/azure-servicebus/samples/sync_samples/auto_lock_renew.py

@@ -9,6 +9,10 @@
 Example to show usage of AutoLockRenewer:
     1. Automatically renew locks on messages received from non-sessionful entity
     2. Automatically renew locks on the session of sessionful entity
+
+We do not guarantee that this SDK is thread-safe. We do not recommend reusing the ServiceBusClient,
+ ServiceBusSender, ServiceBusReceiver across threads. It is up to the running 
+ application to use these classes in a thread-safe manner.
 """
 
 import os