Docsp-19108 v4.2 (#698)

* DOCSP-19108 update aggregation-framework -> aggregation-pipeline-intro (#686)

* DOCSP-19108 update aggregation-framework -> aggregation-pipeline-intro

* CR1

* CR 1.5

* removing timeseries-collections.txt

* rearranging sharding additional info

* fix bullets on sharding additional info

* fixing the fix

* add blank line

* move pipeline-intro ref

* remove rouge agg framework

Author: ianf-mongodb

source/aggregation.txt

@@ -15,16 +15,16 @@ results. Aggregation operations group values from multiple documents
 together, and can perform a variety of operations on the grouped data
 to return a single result. MongoDB provides three ways to perform
 aggregation: the :ref:`aggregation pipeline
-<aggregation-framework>`, the :ref:`map-reduce function
+<aggregation-pipeline>`, the :ref:`map-reduce function
 <aggregation-map-reduce>`, and :ref:`single purpose aggregation methods
 <single-purpose-agg-operations>`.
 
-.. _aggregation-framework:
+.. _aggregation-pipeline-intro:
 
 Aggregation Pipeline
 --------------------
 
-MongoDB's :doc:`aggregation framework
+MongoDB's :doc:`aggregation pipeline
 </core/aggregation-pipeline>` is modeled on the concept of data
 processing pipelines. Documents enter a multi-stage pipeline that
 transforms the documents into an aggregated result. For example:

source/core/sharded-cluster-query-router.txt

@@ -309,3 +309,12 @@ Connection Pools
 .. |newversion| replace:: 4.2
 
 .. |oldversion| replace:: 4.0
+
+Using Aggregation Pipelines with Clusters
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+For more information on how sharding works with :ref:`aggregations
+<aggregation-pipeline>`, read the sharding chapter in the `Practical
+MongoDB Aggregations
+<https://www.practical-mongodb-aggregations.com/guides/sharding.html>`__
+e-book.

source/reference/operator/aggregation/out.txt

@@ -20,7 +20,7 @@ Definition
    Takes the documents returned by the aggregation pipeline and writes
    them to a specified collection. The :pipeline:`$out` operator must
    be *the last stage* in the pipeline. The :pipeline:`$out` operator
-   lets the aggregation framework return result sets of any size.
+   lets the aggregation pipeline return result sets of any size.
 
    .. versionchanged:: 3.2.0
 

source/reference/operator/query/where.txt

@@ -38,9 +38,11 @@ Definition
    (:doc:`BSON type 13 </reference/bson-types/>`). 
 
 .. important::
+   
    .. versionchanged:: 3.6
+
       The :query:`$expr` operator allows the
-      use of :ref:`aggregation expressions <aggregation-framework>`
+      use of :ref:`aggregation expressions <aggregation-expressions>`
       within the query language. :query:`$expr` is faster than
       :query:`$where` because it does not execute JavaScript and should
       be preferred where possible.

source/sharding.txt

@@ -364,8 +364,16 @@ available on sharded clusters.
 
 .. include:: /includes/extracts/transactions-committed-visibility.rst
 
+Additional Information
+~~~~~~~~~~~~~~~~~~~~~~
 
-For details, see:
+For more information on how sharding works with
+:doc:`aggregations </aggregation>`, read the sharding 
+chapter in the `Practical MongoDB Aggregations
+<https://www.practical-mongodb-aggregations.com/guides/sharding.html>`__
+e-book.
+
+See also:
 
 - :doc:`/core/transactions`
 - :doc:`/core/transactions-production-consideration`