WordPress at a glance
action is not described

clean_post_cache action-hook . WP 2.5.0

Fires immediately after the given post's cache is cleaned.

Usage

add_action( 'clean_post_cache', 'action_function_name_7133', 10, 2 );
function action_function_name_7133( $post_id, $post ){
	// action...
}
$post_id(int)
Post ID.
$post(WP_Post)
Post object.

Where the hook is called

clean_post_cache()
wp-includes/post.php 6052
do_action( 'clean_post_cache', $post->ID, $post );

Where the hook is used (in WP core)

Does not used.