Improve Bigtable operator documentation

providers/google/docs/operators/cloud/bigtable.rst

@@ -33,6 +33,11 @@ BigtableCreateInstanceOperator
 Use the :class:`~airflow.providers.google.cloud.operators.bigtable.BigtableCreateInstanceOperator`
 to create a Google Cloud Bigtable instance.
 
+This operator provisions a Bigtable instance along with one or more clusters.
+It is typically used during environment setup or infrastructure provisioning
+before running tasks that depend on Bigtable.
+
+
 If the Cloud Bigtable instance with the given ID exists, the operator does not compare its configuration
 and immediately succeeds. No changes are made to the existing instance.
 
@@ -56,6 +61,10 @@ BigtableUpdateInstanceOperator
 Use the :class:`~airflow.providers.google.cloud.operators.bigtable.BigtableUpdateInstanceOperator`
 to update an existing Google Cloud Bigtable instance.
 
+This operator allows modifying instance properties such as display name,
+instance type, and labels without recreating the instance. It is useful
+for configuration updates while keeping the existing data and clusters intact.
+
 Only the following configuration can be updated for an existing instance:
 instance_display_name, instance_type and instance_labels.
 
@@ -79,6 +88,11 @@ BigtableDeleteInstanceOperator
 Use the :class:`~airflow.providers.google.cloud.operators.bigtable.BigtableDeleteInstanceOperator`
 to delete a Google Cloud Bigtable instance.
 
+This operator permanently removes a Bigtable instance and all associated
+clusters and tables. Use it carefully, typically during cleanup or
+infrastructure teardown tasks.
+
+
 Using the operator
 """"""""""""""""""
 
@@ -99,6 +113,11 @@ BigtableUpdateClusterOperator
 Use the :class:`~airflow.providers.google.cloud.operators.bigtable.BigtableUpdateClusterOperator`
 to modify number of nodes in a Cloud Bigtable cluster.
 
+This operator updates the size of an existing cluster by increasing or
+decreasing the number of nodes. It helps scale Bigtable capacity up or down
+based on workload requirements.
+
+
 Using the operator
 """"""""""""""""""
 
@@ -116,10 +135,16 @@ it will be retrieved from the Google Cloud connection used. Both variants are sh
 BigtableCreateTableOperator
 -----------------------------
 
-Creates a table in a Cloud Bigtable instance.
+Use the :class:`~airflow.providers.google.cloud.operators.bigtable.BigtableCreateTableOperator`
+to create a table in a Cloud Bigtable instance.
+
+This operator creates a new table with specified column families and optional
+split keys. It is typically used when initializing schema or preparing storage
+for application data.
+
 
 If the table with given ID exists in the Cloud Bigtable instance, the operator compares the Column Families.
-If the Column Families are identical operator succeeds. Otherwise, the operator fails with the appropriate
+If the Column Families are identical, the operator succeeds. Otherwise, the operator fails with the appropriate
 error message.
 
 
@@ -151,6 +176,10 @@ BigtableDeleteTableOperator
 Use the :class:`~airflow.providers.google.cloud.operators.bigtable.BigtableDeleteTableOperator`
 to delete a table in Google Cloud Bigtable.
 
+This operator removes a table from an instance. It is commonly used for
+cleanup tasks or when decommissioning unused datasets.
+
+
 Using the operator
 """"""""""""""""""
 
@@ -174,6 +203,11 @@ it will be retrieved from the Google Cloud connection used. Both variants are sh
 Use the :class:`~airflow.providers.google.cloud.sensors.bigtable.BigtableTableReplicationCompletedSensor`
 to wait for the table to replicate fully.
 
+This sensor periodically checks the replication status and blocks execution
+until replication is complete. It is useful in workflows that depend on data
+being fully available across clusters.
+
+
 The same arguments apply to this sensor as the BigtableCreateTableOperator.
 
 **Note:** If the table or the Cloud Bigtable instance does not exist, this sensor waits for the table until