RELEASE-NOTES-1.27

   1 Security reminder: If you have PHP's register_globals option set, you must
   2 turn it off. MediaWiki will not work with it enabled.
   3
   4 == MediaWiki 1.27 ==
   5
   6 THIS IS NOT A RELEASE YET
   7
   8 MediaWiki 1.27 is an alpha-quality branch and is not recommended for use in
   9 production.
  10
  11 === Configuration changes in 1.27 ===
  12 * Removed $wgUseLinkNamespaceDBFields
  13 * Deprecated $wgResourceLoaderMinifierStatementsOnOwnLine and
  14   $wgResourceLoaderMinifierMaxLineLength, because there was little value in
  15   making the behavior configurable. The default values (`false` for the former,
  16   1000 for the latter) are now hard-coded.
  17 * $wgDebugDumpSqlLength was removed (deprecated in 1.24).
  18 * $wgDebugDBTransactions was removed (deprecated in 1.20).
  19
  20 === New features in 1.27 ===
  21 * $wgDataCenterId and $wgDataCenterRoles where added, which will serve as
  22   basic configuration settings needed for multi-datacenter setups.
  23   $wgDataCenterUpdateStickTTL was also added.
  24
  25 ==== External libraries ====
  26
  27 === Bug fixes in 1.27 ===
  28
  29 === Action API changes in 1.27 ===
  30
  31 === Action API internal changes in 1.27 ===
  32
  33 === Languages updated in 1.27 ===
  34
  35 MediaWiki supports over 350 languages. Many localisations are updated
  36 regularly. Below only new and removed languages are listed, as well as
  37 changes to languages because of Bugzilla reports.
  38
  39
  40 === Other changes in 1.27 ===
  41
  42
  43 == Compatibility ==
  44
  45 MediaWiki 1.27 requires PHP 5.3.3 or later. There is experimental support for
  46 HHVM 3.3.0.
  47
  48 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
  49 support for them is somewhat less mature. There is experimental support for
  50 Oracle and Microsoft SQL Server.
  51
  52 The supported versions are:
  53
  54 * MySQL 5.0.3 or later
  55 * PostgreSQL 8.3 or later
  56 * SQLite 3.3.7 or later
  57 * Oracle 9.0.1 or later
  58 * Microsoft SQL Server 2005 (9.00.1399)
  59
  60 == Upgrading ==
  61
  62 1.27 has several database changes since 1.26, and will not work without schema
  63 updates. Note that due to changes to some very large tables like the revision
  64 table, the schema update may take quite long (minutes on a medium sized site,
  65 many hours on a large site).
  66
  67 If upgrading from before 1.11, and you are using a wiki as a commons
  68 repository, make sure that it is updated as well. Otherwise, errors may arise
  69 due to database schema changes.
  70
  71 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
  72 new database fields are filled with data.
  73
  74 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
  75 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
  76 with MediaWiki 1.21.
  77
  78 Don't forget to always back up your database before upgrading!
  79
  80 See the file UPGRADE for more detailed upgrade instructions.
  81
  82 For notes on 1.26.x and older releases, see HISTORY.
  83
  84 == Online documentation ==
  85
  86 Documentation for both end-users and site administrators is available on
  87 MediaWiki.org, and is covered under the GNU Free Documentation License (except
  88 for pages that explicitly state that their contents are in the public domain):
  89
  90        https://www.mediawiki.org/wiki/Documentation
  91
  92 == Mailing list ==
  93
  94 A mailing list is available for MediaWiki user support and discussion:
  95
  96        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
  97
  98 A low-traffic announcements-only list is also available:
  99
 100        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 101
 102 It's highly recommended that you sign up for one of these lists if you're
 103 going to run a public MediaWiki, so you can be notified of security fixes.
 104
 105 == IRC help ==
 106
 107 There's usually someone online in #mediawiki on irc.freenode.net.