Iterator work overview

[joshtrichards]

Bugs

• 158

  • Only impacts certain environments.

Suspected to be same root cause:

The below are likely related to #158 (which can be confirmed once a solution is developed).

• core/shipped.json disappearing from prior updates leading to failures on the next update

  • 131

  • 222

  • 434

• Other previously mysterious deleteOldFiles() situations

  • 249

• Likely some of the previously mysterious createBackup() situations
  • https://github.com/nextcloud/updater/issues?q=is%3Aopen+is%3Aissue+label%3A%22feature%3A+backups%22

Fixes/PRs:

• 515 targeting #158

  • Note: reverted in #518 due to #517
  • a new solution is required :disappointed:

Enhancements

• 507

• 397

The above are performance matters that impact all environments. The solution required for both of the above will in all likelihood be the same.

Fixes/PRs:

• 516 (WIP/draft)

Cc: @caco3, @Altahrim, @blizzz, @kesselb, @come-nc

[joshtrichards]

Another suspected to be same root cause:

• Some moveNewVersionInPlace() situations:

  • 276

  • Possibly some in #156

[joshtrichards]

A preliminary update: https://github.com/nextcloud/updater/issues/158#issuecomment-2070056900

[marcelstoer]

Could you merge the two "Fixes/PRs:" sections in the original description? Should the open bugs be closed in favor of referencing this issue?