Do not remove .pyc and .pyo files after building Python

Dockerfile

@@ -424,7 +424,7 @@ function install_python() {
     find /usr/python -depth \
       \( \
         \( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
-        -o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+        -o \( -type f -a \( -name 'libpython*.a' \) \) \
     \) -exec rm -rf '{}' +
     link_python
 }

Dockerfile.ci

@@ -363,7 +363,7 @@ function install_python() {
     find /usr/python -depth \
       \( \
         \( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
-        -o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+        -o \( -type f -a \( -name 'libpython*.a' \) \) \
     \) -exec rm -rf '{}' +
     link_python
 }

docker-stack-docs/changelog.rst

@@ -34,6 +34,18 @@ the Airflow team.
        any Airflow version from the ``Airflow 2`` line. There is no guarantee that it will work, but if it does,
        then you can use latest features from that image to build images for previous Airflow versions.
 
+Airflow 3.1.4
+~~~~~~~~~~~~~
+
+In Airflow 3.1.4, the images are build without removing of .pyc and .pyo files when Python is built.
+This increases the size of the image slightly (<0.5%), but improves performance of Python in the container
+because Python does not need to recompile the files on the first run but more importantly, if you use
+``exec`` to run Health Checks, removed .pyc files caused a small but ever growing memory leak in the Unix
+kernel connected to negative ``dentries`` created when .pyc files were attempted to be compiled and failed.
+This over time could lead to out-of-memory issues on the host running the container.
+
+More information about ``dentries`` can be found in `this article <https://lwn.net/Articles/814535/>`_.
+
 Airflow 3.1.0
 ~~~~~~~~~~~~~
 

scripts/docker/install_os_dependencies.sh

@@ -331,7 +331,7 @@ function install_python() {
     find /usr/python -depth \
       \( \
         \( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
-        -o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+        -o \( -type f -a \( -name 'libpython*.a' \) \) \
     \) -exec rm -rf '{}' +
     link_python
 }