os-core-update-index bundle is too big and unused

[cmarcelo]

This bundle was an attempt to make metadata available to improve search and other queries, but I don't think it was ever used, besides people reading the files directly. It has some problems at the moment:

• It does include a list of all files in each bundle. While this is useful, it is also expensive. The bundle has about 800M nowadays.
• The representation of the file list is actually a map from files to boolean, and they are always true, so we have a : true in every line.

For the reference, the open issues related to os-core-update-index:

• "Use it for search" Use new os-core-update-index file for swupd search swupd-client#394
• "Use it for getting bundle info" Implement bundle-info command swupd-client#461
• A bug! Hash Mismatch for os-core-update-index Bundle in MoM #541

[cmarcelo]

Is there an use for it that I'm missing?

[bryteise]

@otaviobp is this something being considered for swupd search?

[otaviobp]

That was something added to improve swupd search, but it wan't used yet. We are reconsidering if they are useful for the search use cases we have. There are some other fields that we can't obtain in other way, like packages and includes, but I don't think we really need them.

[otaviobp]

+1 for removing that. no plans to use them on search anymore.

[miguelinux]

Do we have a replacement for it?

[gtkramer]

Not only is it pretty much unused, but as mentioned in #541, it is a bug which has the potential to block release engineering from publishing builds.

[reaganlo]

os-core-update-index bundle has been deprecated in Mixer v6.0.0 by the PR #636