NoteDbMigrator: Totally skip migration for orphan changes

This case was explicitly handled by ChangeRebuilderImpl, and
NoteDbMigrator in fact caught RepositoryNotFoundException and let the
migration proceed. Unfortunately, this would then cause the primary
storage migration step to fail with:

  com.google.gwtorm.server.OrmRuntimeException: change X has no note_db_state; rebuild it first

Work around this by catching this exception and checking after the fact
whether the change is known to be unrecoverably corrupt. There is
already another check in place: no patch set, in which case the
migration process would also proceed, that was added in I0439c7fc8e5.
So that we are just adding yet another "supported" kind of change
corruption recovery mechanism to the migration proccess.

Also add a test that is trying to migrate two different changes from two
different projects, where one project was deleted on the file system.
That test demonstrates, that one change is completely migrated while
for another change the migration is skipped, as it is detected as
corrupted change.

The usual use case for orphan changes, also, the changes with not
existing git repsitories on the file system, is often seen for gerrit
test instances: Database replicated from the production system but only
a couple of git repositories are replicated, leading to orphan changes.

Reported-by: Alan Tokaev <tokaev@gmail.com>
Bug: Issue 12097
Change-Id: I516f40f03feaafe3014fabb0c2f5c40d6753b8bc
2 files changed
tree: 12d6d9b38c23a67ef718b6d83cfef51c49ffdcc5
  1. .settings/
  2. antlr3/
  3. contrib/
  4. Documentation/
  5. gerrit-gwtdebug/
  6. gerrit-gwtui/
  7. gerrit-gwtui-common/
  8. gerrit-plugin-gwtui/
  9. java/
  10. javatests/
  11. lib/
  12. plugins/
  13. polygerrit-ui/
  14. prolog/
  15. prologtests/
  16. proto/
  17. resources/
  18. tools/
  19. webapp/
  20. .bazelignore
  21. .bazelproject
  22. .bazelrc
  23. .bazelversion
  24. .editorconfig
  25. .git-blame-ignore-revs
  26. .gitignore
  27. .gitmodules
  28. .gitreview
  29. .mailmap
  30. .pydevproject
  31. BUILD
  32. COPYING
  33. INSTALL
  34. Jenkinsfile
  35. package.json
  36. README.md
  37. SUBMITTING_PATCHES
  38. version.bzl
  39. WORKSPACE
README.md

Gerrit Code Review

Gerrit is a code review and project management tool for Git based projects.

Build Status

Objective

Gerrit makes reviews easier by showing changes in a side-by-side display, and allowing inline comments to be added by any reviewer.

Gerrit simplifies Git based project maintainership by permitting any authorized user to submit changes to the master Git repository, rather than requiring all approved changes to be merged in by hand by the project maintainer.

Documentation

For information about how to install and use Gerrit, refer to the documentation.

Source

Our canonical Git repository is located on googlesource.com. There is a mirror of the repository on Github.

Reporting bugs

Please report bugs on the issue tracker.

Contribute

Gerrit is the work of hundreds of contributors. We appreciate your help!

Please read the contribution guidelines.

Note that we do not accept Pull Requests via the Github mirror.

Getting in contact

The Developer Mailing list is repo-discuss on Google Groups.

License

Gerrit is provided under the Apache License 2.0.

Build

Install Bazel and run the following:

    git clone --recurse-submodules https://gerrit.googlesource.com/gerrit
    cd gerrit && bazel build release

Install binary packages (Deb/Rpm)

The instruction how to configure GerritForge/BinTray repositories is here

On Debian/Ubuntu run:

    apt-get update & apt-get install gerrit=<version>-<release>

NOTE: release is a counter that starts with 1 and indicates the number of packages that have been released with the same version of the software.

On CentOS/RedHat run:

    yum clean all && yum install gerrit-<version>[-<release>]

On Fedora run:

    dnf clean all && dnf install gerrit-<version>[-<release>]

Use pre-built Gerrit images on Docker

Docker images of Gerrit are available on DockerHub

To run a CentOS 7 based Gerrit image:

    docker run -p 8080:8080 gerritforge/gerrit-centos7[:version]

To run a Ubuntu 15.04 based Gerrit image:

    docker run -p 8080:8080 gerritforge/gerrit-ubuntu15.04[:version]

NOTE: release is optional. Last released package of the version is installed if the release number is omitted.