How to not recreate unchanged asset bundles

Addressables version: 1.16.6 or 1.16.7
Unity version: 2019.4.8f1

When running "Update a previous build" the asset bundles of the unchanged addressable groups (i.e. containing unchanged assets) are rebuilt (with the same name).

Example, if I make changes to only one asset corresponding to the group `ui_config_xml_supported_languages_xml` here is the content of the asset bundles directory before/after the update:

Before:

$ ls -l "S:\Addressables\ServerData\Production\iOS"

total 262400

-rw-r--r-- 1 vince 197609  5750115 Nov  4 17:12 assets_for_all_languages_assets_all_d2cb82b503dc8b7a75b24e0f70ec3c6e.bundle

-rw-r--r-- 1 vince 197609       32 Nov  4 17:13 catalog_2020.11.04.09.08.37.hash

-rw-r--r-- 1 vince 197609   204080 Nov  4 17:13 catalog_2020.11.04.09.08.37.json

-rw-r--r-- 1 vince 197609 19744389 Nov  4 17:13 pages_prefab_for_001_535_assets_all_b6f9877024f5dca6fc57ed3348e715b3.bundle

-rw-r--r-- 1 vince 197609 54846032 Nov  4 17:13 scene_001_001-the-shapes_scenes_all_be72d87fc192736006522651a9497020.bundle

-rw-r--r-- 1 vince 197609  8455264 Nov  4 17:11 scene_001_500-game-the-house_scenes_all_db69da9f9d2eb4b032f206cd19ab7ca1.bundle

-rw-r--r-- 1 vince 197609 68669865 Nov  4 17:13 scene001_007-the-musical-instruments_scenes_all_83a837915f5960d4084f6145b16818d0.bundle

-rw-r--r-- 1 vince 197609  3712562 Nov  4 17:11 scene001_556-game-hideandseek-crosssection_scenes_all_b6c657bab4d5d2e23b9d6ae85e0d64c3.bundle

-rw-r--r-- 1 vince 197609 81437079 Nov  4 17:12 scene001_701-classic-series-barbapapa_scenes_all_eb13cec16e0b51a8b146a047298d9af0.bundle

-rw-r--r-- 1 vince 197609     9724 Nov  4 17:09 ui_config_xml_supported_languages_xml_assets_all_aa19d794ab4563ae9db72a47e2553f88.bundle

-rw-r--r-- 1 vince 197609     9722 Nov  4 17:11 ui_config_xml_supported_languages_xml_assets_all_d4ca64271a16b5f99ddeab0ad528cc91.bundle

-rw-r--r-- 1 vince 197609 25029555 Nov  2 23:50 ui_translations_en_assets_all_816e7b8f4574dafeee08348fd711b636.bundle

After:

$ ls -l "S:\Addressables\ServerData\Production\iOS"

total 262528

-rw-r--r-- 1 vince 197609  5750115 Nov  4 17:17 assets_for_all_languages_assets_all_d2cb82b503dc8b7a75b24e0f70ec3c6e.bundle

-rw-r--r-- 1 vince 197609       32 Nov  4 17:19 catalog_2020.11.04.09.08.37.hash

-rw-r--r-- 1 vince 197609   204084 Nov  4 17:19 catalog_2020.11.04.09.08.37.json

-rw-r--r-- 1 vince 197609 19744389 Nov  4 17:18 pages_prefab_for_001_535_assets_all_b6f9877024f5dca6fc57ed3348e715b3.bundle

-rw-r--r-- 1 vince 197609 54846032 Nov  4 17:18 scene_001_001-the-shapes_scenes_all_be72d87fc192736006522651a9497020.bundle

-rw-r--r-- 1 vince 197609  8455264 Nov  4 17:17 scene_001_500-game-the-house_scenes_all_db69da9f9d2eb4b032f206cd19ab7ca1.bundle

-rw-r--r-- 1 vince 197609 68669865 Nov  4 17:19 scene001_007-the-musical-instruments_scenes_all_83a837915f5960d4084f6145b16818d0.bundle

-rw-r--r-- 1 vince 197609  3712562 Nov  4 17:17 scene001_556-game-hideandseek-crosssection_scenes_all_b6c657bab4d5d2e23b9d6ae85e0d64c3.bundle

-rw-r--r-- 1 vince 197609 81437079 Nov  4 17:18 scene001_701-classic-series-barbapapa_scenes_all_eb13cec16e0b51a8b146a047298d9af0.bundle

-rw-r--r-- 1 vince 197609     9724 Nov  4 17:17 ui_config_xml_supported_languages_xml_assets_all_525ba80516df3d36b707b8710535733d.bundle

-rw-r--r-- 1 vince 197609     9724 Nov  4 17:09 ui_config_xml_supported_languages_xml_assets_all_aa19d794ab4563ae9db72a47e2553f88.bundle

-rw-r--r-- 1 vince 197609     9722 Nov  4 17:11 ui_config_xml_supported_languages_xml_assets_all_d4ca64271a16b5f99ddeab0ad528cc91.bundle

-rw-r--r-- 1 vince 197609 25029555 Nov  2 23:50 ui_translations_en_assets_all_816e7b8f4574dafeee08348fd711b636.bundle

You can see that there is only one new asset bundle (ui_config_xml_supported_languages_xml_assets_all_525ba80516df3d36b707b8710535733d.bundle) but that the timestamp of all asset bundles has changed because every asset bundle has been rebuilt.

Once I will have added all my addressable groups, it will take hours to update for every little change I want to make to an asset group.

How can I fix this ?

I have put in attachment a screenshot of the advanced configuration of one of the groups

 

I don't see the "addressables_content_state.bin" file in your directory. Is it missing? If you look at the link here under the section "Building for Content Updates", step 3 says you need that file.

 

@tgrotte , "addressables_content_state.bin" is not missing, it's just in a different folder. When I run "Update a previous build" I select it.