[airflow] 02/04: Add explanation about tag creation and cleanup (#32406)

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ephraimanierobi pushed a commit to branch v2-6-test
in repository https://gitbox.apache.org/repos/asf/airflow.git

commit 00af0834195f24dfb551152624a02a333f9e21dd
Author: eladkal <45...@users.noreply.github.com>
AuthorDate: Fri Jul 7 11:19:27 2023 +0300

    Add explanation about tag creation and cleanup (#32406)
    
    * Add explanation about tag creation and cleanup
    
    (cherry picked from commit b1c1f97744e735c5230fc658cf8deb71aa770f9b)
---
 docs/apache-airflow/howto/add-dag-tags.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/apache-airflow/howto/add-dag-tags.rst b/docs/apache-airflow/howto/add-dag-tags.rst
index 7e75cec734..5b7db76229 100644
--- a/docs/apache-airflow/howto/add-dag-tags.rst
+++ b/docs/apache-airflow/howto/add-dag-tags.rst
@@ -38,3 +38,7 @@ In your Dag file, pass a list of tags you want to add to DAG object:
 **Screenshot**:
 
 .. image:: ../img/add-dag-tags.png
+
+Tags are registered as part of dag parsing.
+In case of stale tags, you can purge old data with the Airflow CLI command ``airflow db clean``.
+See :ref:`db clean usage<cli-db-clean>` for more details.