Google Git
Sign in
gerrit / gerrit / 1eb5429227387e9338497aa1d66bcf514363a931
commit1eb5429227387e9338497aa1d66bcf514363a931[log] [tgz]
authorDavid Ostrovsky <david@ostrovsky.org>Wed Mar 07 20:59:25 2018 +0100
committerDavid Ostrovsky <david@ostrovsky.org>Wed Mar 07 21:35:20 2018 +0100
tree3c9ec25f69c762c6be97afac6ed8a0c3c2a35189
parenteb2f987ddbca9202111137d33c367b8622f66b23 [diff]
ExternalIds NoteDb migration: Avoid intermediate migration state

The problem we are facing on the stable-2.14 branch is: we have
intermediate NoteDb migration state for accounts entity due to
merge of: Ic9bd5791e84. That why we are writing to both backends:
ReviewDb and NoteDb. It creates potential risk to be out of sync
between ReviewDb and NoteDb (and secondary index). In addition it
is always bad from performance point of view to unnecessary write
to 2 different backends. The real migration to NoteDb for accounts
entities (phase 2) happens in: Ia1dae9306b7 and Schema_144, that is
migrating the external IDs from ReviewDb to NoteDb, and that change
is not a part of stable-2.14.

In retrospective, we shouldn't include partially migrated code paths
for the production releases. It's error prone and bad for the
performance. Originally, multi-phase upgrade procedure was done on
master only to support multi master and zero downtime upgrades. These
feature is not related to open source gerrit version.

Moreover, now, that we are facing intermittent account corruption
problems: Issue 7652 that is hard to track down, understand and fix,
we are seeing automatic recovery attempt: [1], that is trying to
detect database corruption and synchronize both backends. This change
takes a different approach and avoids two backends where only ReviewDb
is actually used on production release line 2.14.

To avoid fixing too many caller sites the interfaces of ExternalIds,
ExternalIdsOnInit, ExternalIdsBatchUpdate and ExternalIdsUpdate are
mostly preserved, but the code paths for NoteDb mutations is dropped.

This partially reverts commit 744d2b896719e2058539db98443c80eb9368fd77.

[1] https://gerrit-review.googlesource.com/162450

Change-Id: Iec8d0c5639e462d88a7c5d0906febfd6f3337277
14 files changed
tree: 3c9ec25f69c762c6be97afac6ed8a0c3c2a35189
  1. .settings/
  2. contrib/
  3. Documentation/
  4. gerrit-acceptance-framework/
  5. gerrit-acceptance-tests/
  6. gerrit-antlr/
  7. gerrit-cache-h2/
  8. gerrit-common/
  9. gerrit-elasticsearch/
  10. gerrit-extension-api/
  11. gerrit-gpg/
  12. gerrit-gwtdebug/
  13. gerrit-gwtexpui/
  14. gerrit-gwtui/
  15. gerrit-gwtui-common/
  16. gerrit-httpd/
  17. gerrit-launcher/
  18. gerrit-lucene/
  19. gerrit-main/
  20. gerrit-oauth/
  21. gerrit-openid/
  22. gerrit-patch-commonsnet/
  23. gerrit-patch-jgit/
  24. gerrit-pgm/
  25. gerrit-plugin-api/
  26. gerrit-plugin-gwtui/
  27. gerrit-prettify/
  28. gerrit-reviewdb/
  29. gerrit-server/
  30. gerrit-sshd/
  31. gerrit-test-util/
  32. gerrit-util-cli/
  33. gerrit-util-http/
  34. gerrit-util-ssl/
  35. gerrit-war/
  36. lib/
  37. plugins/
  38. polygerrit-ui/
  39. ReleaseNotes/
  40. tools/
  41. website/
  42. .bazelproject
  43. .editorconfig
  44. .git-blame-ignore-revs
  45. .gitignore
  46. .gitmodules
  47. .mailmap
  48. .pydevproject
  49. BUILD
  50. COPYING
  51. INSTALL
  52. README.md
  53. SUBMITTING_PATCHES
  54. version.bzl
  55. 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 IRC channel on freenode is #gerrit. An archive is available at: echelog.com.

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 --recursive 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.