Changelog 21 KB

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  1. .. _changelog:
  2. ================
  3. Change history
  4. ================
  5. .. contents::
  6. :local:
  7. If you're looking for versions prior to 3.0.x you should go to :ref:`history`.
  8. .. _version-3.0.11:
  9. 3.0.11
  10. ======
  11. - [security:low] generic-init.d scripts changed permissions of /var/log & /var/run
  12. In the daemonization tutorial the recommended directories were as follows:
  13. .. code-block:: bash
  14. CELERYD_LOG_FILE="/var/log/celery/%n.log"
  15. CELERYD_PID_FILE="/var/run/celery/%n.pid"
  16. But in the scripts themselves the default files were ``/var/log/celery%n.log``
  17. and ``/var/run/celery%n.pid``, so if the user did not change the location
  18. by configuration, the directories ``/var/log`` and ``/var/run`` would be
  19. created - and worse have their permissions and owners changed.
  20. This change means that:
  21. - Default pid file is ``/var/run/celery/%n.pid``
  22. - Default log file is ``/var/log/celery/%n.log``
  23. - The directories are only created and have their permissions
  24. changed if *no custom locations are set*.
  25. Users can force paths to be created by calling the ``create-paths``
  26. subcommand:
  27. .. code-block:: bash
  28. $ sudo /etc/init.d/celeryd create-paths
  29. .. admonition:: Upgrading Celery will not update init scripts
  30. To update the init scripts you have to re-download
  31. the files from source control and update them manually.
  32. You can find the init scripts for version 3.0.x at:
  33. http://github.com/celery/celery/tree/3.0/extra/generic-init.d
  34. - Now depends on billiard 2.7.3.16
  35. - :program:`celery worker` and :program:`celery beat` commands now respects
  36. the :option:`--no-color` option (Issue #999).
  37. - Fixes request stack protection when app is initialized more than
  38. once (Issue #1003).
  39. - Fixed typos in eventlet examples (Issue #1000)
  40. Fix contributed by Bryan Bishop.
  41. Congratulations on opening bug #1000!
  42. - Tasks that raise :exc:`~celery.exceptions.Ignore` are now acknowledged.
  43. - Beat: Now shows the name of the entry in ``sending due task`` logs.
  44. .. _version-3.0.10:
  45. 3.0.10
  46. ======
  47. :release-date: 2012-09-20 05:30 P.M BST
  48. - Now depends on kombu 2.4.7
  49. - Now depends on billiard 2.7.3.14
  50. - Fixes crash at startup when using Django and pre-1.4 projects
  51. (setup_environ).
  52. - Hard time limits now sends the KILL signal shortly after TERM,
  53. to terminate processes that have signal handlers blocked by C extensions.
  54. - Billiard now installs even if the C extension cannot be built.
  55. It's still recommended to build the C extension if you are using
  56. a transport other than rabbitmq/redis (or use forced execv for some
  57. other reason).
  58. - Pool now sets a ``current_process().index`` attribute that can be used to create
  59. as many log files as there are processes in the pool.
  60. - Canvas: chord/group/chain no longer modifies the state when called
  61. Previously calling a chord/group/chain would modify the ids of subtasks
  62. so that:
  63. .. code-block:: python
  64. >>> c = chord([add.s(2, 2), add.s(4, 4)], xsum.s())
  65. >>> c()
  66. >>> c() <-- call again
  67. at the second time the ids for the tasks would be the same as in the
  68. previous invocation. This is now fixed, so that calling a subtask
  69. won't mutate any options.
  70. - Canvas: Chaining a chord to another task now works (Issue #965).
  71. - Worker: Fixed a bug where the request stack could be corrupted if
  72. relative imports are used.
  73. Problem usually manifested itself as an exception while trying to
  74. send a failed task result (``NoneType does not have id attribute``).
  75. Fix contributed by Sam Cooke.
  76. - Tasks can now raise :exc:`~celery.exceptions.Ignore` to skip updating states
  77. or events after return.
  78. Example:
  79. .. code-block:: python
  80. from celery.exceptions import Ignore
  81. @task
  82. def custom_revokes():
  83. if redis.sismember('tasks.revoked', custom_revokes.request.id):
  84. raise Ignore()
  85. - The worker now makes sure the request/task stacks are not modified
  86. by the initial ``Task.__call__``.
  87. This would previously be a problem if a custom task class defined
  88. ``__call__`` and also called ``super()``.
  89. - Because of problems the fast local optimization has been disabled,
  90. and can only be enabled by setting the :envvar:`USE_FAST_LOCALS` attribute.
  91. - Worker: Now sets a default socket timeout of 5 seconds at shutdown
  92. so that broken socket reads do not hinder proper shutdown (Issue #975).
  93. - More fixes related to late eventlet/gevent patching.
  94. - Documentation for settings out of sync with reality:
  95. - :setting:`CELERY_TASK_PUBLISH_RETRY`
  96. Documented as disabled by default, but it was enabled by default
  97. since 2.5 as stated by the 2.5 changelog.
  98. - :setting:`CELERY_TASK_PUBLISH_RETRY_POLICY`
  99. The default max_retries had been set to 100, but documented as being
  100. 3, and the interval_max was set to 1 but documented as 0.2.
  101. The default setting are now set to 3 and 0.2 as it was originally
  102. documented.
  103. Fix contributed by Matt Long.
  104. - Worker: Log messages when connection established and lost have been improved.
  105. - The repr of a crontab schedule value of '0' should be '*' (Issue #972).
  106. - Revoked tasks are now removed from reserved/active state in the worker
  107. (Issue #969)
  108. Fix contributed by Alexey Zatelepin.
  109. - gevent: Now supports hard time limits using ``gevent.Timeout``.
  110. - Documentation: Links to init scripts now point to the 3.0 branch instead
  111. of the development branch (master).
  112. - Documentation: Fixed typo in signals user guide (Issue #986).
  113. ``instance.app.queues`` -> ``instance.app.amqp.queues``.
  114. - Eventlet/gevent: The worker did not properly set the custom app
  115. for new greenlets.
  116. - Eventlet/gevent: Fixed a bug where the worker could not recover
  117. from connection loss (Issue #959).
  118. Also, because of a suspected bug in gevent the
  119. :setting:`BROKER_CONNECTION_TIMEOUT` setting has been disabled
  120. when using gevent
  121. 3.0.9
  122. =====
  123. :release-date: 2012-08-31 06:00 P.M BST
  124. - Important note for users of Django and the database scheduler!
  125. Recently a timezone issue has been fixed for periodic tasks,
  126. but erroneous timezones could have already been stored in the
  127. database, so for the fix to work you need to reset
  128. the ``last_run_at`` fields.
  129. You can do this by executing the following command:
  130. .. code-block:: bash
  131. $ python manage.py shell
  132. >>> from djcelery.models import PeriodicTask
  133. >>> PeriodicTask.objects.update(last_run_at=None)
  134. You also have to do this if you change the timezone or
  135. :setting:`CELERY_ENABLE_UTC` setting.
  136. - Note about the :setting:`CELERY_ENABLE_UTC` setting.
  137. If you previously disabled this just to force periodic tasks to work with
  138. your timezone, then you are now *encouraged to re-enable it*.
  139. - Now depends on Kombu 2.4.5 which fixes PyPy + Jython installation.
  140. - Fixed bug with timezones when :setting:`CELERY_ENABLE_UTC` is disabled
  141. (Issue #952).
  142. - Fixed a typo in the celerybeat upgrade mechanism (Issue #951).
  143. - Make sure the `exc_info` argument to logging is resolved (Issue #899).
  144. - Fixed problem with Python 3.2 and thread join timeout overflow (Issue #796).
  145. - A test case was occasionally broken for Python 2.5.
  146. - Unit test suite now passes for PyPy 1.9.
  147. - App instances now supports the with statement.
  148. This calls the new :meth:`~celery.Celery.close` method at exit, which
  149. cleans up after the app like closing pool connections.
  150. Note that this is only necessary when dynamically creating apps,
  151. e.g. for "temporary" apps.
  152. - Support for piping a subtask to a chain.
  153. For example:
  154. .. code-block:: python
  155. pipe = sometask.s() | othertask.s()
  156. new_pipe = mytask.s() | pipe
  157. Contributed by Steve Morin.
  158. - Fixed problem with group results on non-pickle serializers.
  159. Fix contributed by Steeve Morin.
  160. .. _version-3.0.8:
  161. 3.0.8
  162. =====
  163. :release-date: 2012-08-29 05:00 P.M BST
  164. - Now depends on Kombu 2.4.4
  165. - Fixed problem with amqplib and receiving larger message payloads
  166. (Issue #922).
  167. The problem would manifest itself as either the worker hanging,
  168. or occasionally a ``Framing error`` exception appearing.
  169. Users of the new ``pyamqp://`` transport must upgrade to
  170. :mod:`amqp` 0.9.3.
  171. - Beat: Fixed another timezone bug with interval and crontab schedules
  172. (Issue #943).
  173. - Beat: The schedule file is now automatically cleared if the timezone
  174. is changed.
  175. The schedule is also cleared when you upgrade to 3.0.8 from an earlier
  176. version, this to register the initial timezone info.
  177. - Events: The :event:`worker-heartbeat` event now include processed and active
  178. count fields.
  179. Contributed by Mher Movsisyan.
  180. - Fixed error with error email and new task classes (Issue #931).
  181. - ``BaseTask.__call__`` is no longer optimized away if it has been monkey
  182. patched.
  183. - Fixed shutdown issue when using gevent (Issue #911 & Issue #936).
  184. Fix contributed by Thomas Meson.
  185. .. _version-3.0.7:
  186. 3.0.7
  187. =====
  188. :release-date: 2012-08-24 05:00 P.M BST
  189. - Fixes several problems with periodic tasks and timezones (Issue #937).
  190. - Now depends on kombu 2.4.2
  191. - Redis: Fixes a race condition crash
  192. - Fixes an infinite loop that could happen when retrying establishing
  193. the broker connection.
  194. - Daemons now redirect standard file descriptors to :file:`/dev/null`
  195. Though by default the standard outs are also redirected
  196. to the logger instead, but you can disable this by changing
  197. the :setting:`CELERY_REDIRECT_STDOUTS` setting.
  198. - Fixes possible problems when eventlet/gevent is patched too late.
  199. - ``LoggingProxy`` no longer defines ``fileno()`` (Issue #928).
  200. - Results are now ignored for the chord unlock task.
  201. Fix contributed by Steeve Morin.
  202. - Cassandra backend now works if result expiry is disabled.
  203. Fix contributed by Steeve Morin.
  204. - The traceback object is now passed to signal handlers instead
  205. of the string representation.
  206. Fix contributed by Adam DePue.
  207. - Celery command: Extensions are now sorted by name.
  208. - A regression caused the :event:`task-failed` event to be sent
  209. with the exception object instead of its string representation.
  210. - The worker daemon would try to create the pid file before daemonizing
  211. to catch errors, but this file was not immediately released (Issue #923).
  212. - Fixes Jython compatibility.
  213. - ``billiard.forking_enable`` was called by all pools not just the
  214. processes pool, which would result in a useless warning if the billiard
  215. C extensions were not installed.
  216. .. _version-3.0.6:
  217. 3.0.6
  218. =====
  219. :release-date: 2012-08-17 11:00 P.M BST
  220. - Now depends on kombu 2.4.0
  221. - Now depends on billiard 2.7.3.12
  222. - Redis: Celery now tries to restore messages whenever there are no messages
  223. in the queue.
  224. - Crontab schedules now properly respects :setting:`CELERY_TIMEZONE` setting.
  225. It's important to note that crontab schedules uses UTC time by default
  226. unless this setting is set.
  227. Issue #904 and django-celery #150.
  228. - ``billiard.enable_forking`` is now only set by the processes pool.
  229. - The transport is now properly shown by :program:`celery report`
  230. (Issue #913).
  231. - The `--app` argument now works if the last part is a module name
  232. (Issue #921).
  233. - Fixed problem with unpickleable exceptions (billiard #12).
  234. - Adds ``task_name`` attribute to ``EagerResult`` which is always
  235. :const:`None` (Issue #907).
  236. - Old Task class in :mod:`celery.task` no longer accepts magic kwargs by
  237. default (Issue #918).
  238. A regression long ago disabled magic kwargs for these, and since
  239. no one has complained about it we don't have any incentive to fix it now.
  240. - The ``inspect reserved`` control command did not work properly.
  241. - Should now play better with static analyzation tools by explicitly
  242. specifying dynamically created attributes in the :mod:`celery` and
  243. :mod:`celery.task` modules.
  244. - Terminating a task now results in
  245. :exc:`~celery.exceptions.RevokedTaskError` instead of a ``WorkerLostError``.
  246. - ``AsyncResult.revoke`` now accepts ``terminate`` and ``signal`` arguments.
  247. - The :event:`task-revoked` event now includes new fields: ``terminated``,
  248. ``signum``, and ``expired``.
  249. - The argument to :class:`~celery.exceptions.TaskRevokedError` is now one
  250. of the reasons ``revoked``, ``expired`` or ``terminated``.
  251. - Old Task class does no longer use classmethods for push_request and
  252. pop_request (Issue #912).
  253. - ``GroupResult`` now supports the ``children`` attribute (Issue #916).
  254. - ``AsyncResult.collect`` now respects the ``intermediate`` argument
  255. (Issue #917).
  256. - Fixes example task in documentation (Issue #902).
  257. - Eventlet fixed so that the environment is patched as soon as possible.
  258. - eventlet: Now warns if celery related modules that depends on threads
  259. are imported before eventlet is patched.
  260. - Improved event and camera examples in the monitoring guide.
  261. - Disables celery command setuptools entrypoints if the command can't be
  262. loaded.
  263. - Fixed broken ``dump_request`` example in the tasks guide.
  264. .. _version-3.0.5:
  265. 3.0.5
  266. =====
  267. :release-date: 2012-08-01 04:00 P.M BST
  268. - Now depends on kombu 2.3.1 + billiard 2.7.3.11
  269. - Fixed a bug with the -B option (``cannot pickle thread.lock objects``)
  270. (Issue #894 + Issue #892, + django-celery #154).
  271. - The :control:`restart_pool` control command now requires the
  272. :setting:`CELERYD_POOL_RESTARTS` setting to be enabled
  273. This change was necessary as the multiprocessing event that the restart
  274. command depends on is responsible for creating many semaphores/file
  275. descriptors, resulting in problems in some environments.
  276. - ``chain.apply`` now passes args to the first task (Issue #889).
  277. - Documented previously secret options to the Django-Celery monitor
  278. in the monitoring userguide (Issue #396).
  279. - Old changelog are now organized in separate documents for each series,
  280. see :ref:`history`.
  281. .. _version-3.0.4:
  282. 3.0.4
  283. =====
  284. :release-date: 2012-07-26 07:00 P.M BST
  285. - Now depends on Kombu 2.3
  286. - New experimental standalone Celery monitor: Flower
  287. See :ref:`monitoring-flower` to read more about it!
  288. Contributed by Mher Movsisyan.
  289. - Now supports AMQP heartbeats if using the new ``pyamqp://`` transport.
  290. - The py-amqp transport requires the :mod:`amqp` library to be installed::
  291. $ pip install amqp
  292. - Then you need to set the transport URL prefix to ``pyamqp://``.
  293. - The default heartbeat value is 10 seconds, but this can be changed using
  294. the :setting:`BROKER_HEARTBEAT` setting::
  295. BROKER_HEARTBEAT = 5.0
  296. - If the broker heartbeat is set to 10 seconds, the heartbeats will be
  297. monitored every 5 seconds (double the hertbeat rate).
  298. See the `Kombu 2.3 changelog`_ for more information.
  299. .. _`Kombu 2.3 changelog`:
  300. http://kombu.readthedocs.org/en/latest/changelog.html#version-2-3-0
  301. - Now supports RabbitMQ Consumer Cancel Notifications, using the ``pyamqp://``
  302. transport.
  303. This is essential when running RabbitMQ in a cluster.
  304. See the `Kombu 2.3 changelog`_ for more information.
  305. - Delivery info is no longer passed directly through.
  306. It was discovered that the SQS transport adds objects that can't
  307. be pickled to the delivery info mapping, so we had to go back
  308. to using the whitelist again.
  309. Fixing this bug also means that the SQS transport is now working again.
  310. - The semaphore was not properly released when a task was revoked (Issue #877).
  311. This could lead to tasks being swallowed and not released until a worker
  312. restart.
  313. Thanks to Hynek Schlawack for debugging the issue.
  314. - Retrying a task now also forwards any linked tasks.
  315. This means that if a task is part of a chain (or linked in some other
  316. way) and that even if the task is retried, then the next task in the chain
  317. will be executed when the retry succeeds.
  318. - Chords: Now supports setting the interval and other keyword arguments
  319. to the chord unlock task.
  320. - The interval can now be set as part of the chord subtasks kwargs::
  321. chord(header)(body, interval=10.0)
  322. - In addition the chord unlock task now honors the Task.default_retry_delay
  323. option, used when none is specified, which also means that the default
  324. interval can also be changed using annotations:
  325. .. code-block:: python
  326. CELERY_ANNOTATIONS = {
  327. 'celery.chord_unlock': {
  328. 'default_retry_delay': 10.0,
  329. }
  330. }
  331. - New :meth:`@Celery.add_defaults` method can add new default configuration
  332. dicts to the applications configuration.
  333. For example::
  334. config = {'FOO': 10}
  335. celery.add_defaults(config)
  336. is the same as ``celery.conf.update(config)`` except that data will not be
  337. copied, and that it will not be pickled when the worker spawns child
  338. processes.
  339. In addition the method accepts a callable::
  340. def initialize_config():
  341. # insert heavy stuff that can't be done at import time here.
  342. celery.add_defaults(initialize_config)
  343. which means the same as the above except that it will not happen
  344. until the celery configuration is actually used.
  345. As an example, Celery can lazily use the configuration of a Flask app::
  346. flask_app = Flask()
  347. celery = Celery()
  348. celery.add_defaults(lambda: flask_app.config)
  349. - Revoked tasks were not marked as revoked in the result backend (Issue #871).
  350. Fix contributed by Hynek Schlawack.
  351. - Eventloop now properly handles the case when the epoll poller object
  352. has been closed (Issue #882).
  353. - Fixed syntax error in ``funtests/test_leak.py``
  354. Fix contributed by Catalin Iacob.
  355. - group/chunks: Now accepts empty task list (Issue #873).
  356. - New method names:
  357. - ``Celery.default_connection()`` ➠ :meth:`~@Celery.connection_or_acquire`.
  358. - ``Celery.default_producer()`` ➠ :meth:`~@Celery.producer_or_acquire`.
  359. The old names still work for backward compatibility.
  360. .. _version-3.0.3:
  361. 3.0.3
  362. =====
  363. :release-date: 2012-07-20 09:17 P.M BST
  364. :by: Ask Solem
  365. - amqplib passes the channel object as part of the delivery_info
  366. and it's not pickleable, so we now remove it.
  367. .. _version-3.0.2:
  368. 3.0.2
  369. =====
  370. :release-date: 2012-07-20 04:00 P.M BST
  371. :by: Ask Solem
  372. - A bug caused the following task options to not take defaults from the
  373. configuration (Issue #867 + Issue #858)
  374. The following settings were affected:
  375. - :setting:`CELERY_IGNORE_RESULT`
  376. - :setting:`CELERYD_SEND_TASK_ERROR_EMAILS`
  377. - :setting:`CELERY_TRACK_STARTED`
  378. - :setting:`CElERY_STORE_ERRORS_EVEN_IF_IGNORED`
  379. Fix contributed by John Watson.
  380. - Task Request: ``delivery_info`` is now passed through as-is (Issue #807).
  381. - The eta argument now supports datetime's with a timezone set (Issue #855).
  382. - The worker's banner displayed the autoscale settings in the wrong order
  383. (Issue #859).
  384. - Extension commands are now loaded after concurrency is set up
  385. so that they don't interfere with e.g. eventlet patching.
  386. - Fixed bug in the threaded pool (Issue #863)
  387. - The task failure handler mixed up the fields in :func:`sys.exc_info`.
  388. Fix contributed by Rinat Shigapov.
  389. - Fixed typos and wording in the docs.
  390. Fix contributed by Paul McMillan
  391. - New setting: :setting:`CELERY_WORKER_DIRECT`
  392. If enabled each worker will consume from their own dedicated queue
  393. which can be used to route tasks to specific workers.
  394. - Fixed several edge case bugs in the add consumer remote control command.
  395. - :mod:`~celery.contrib.migrate`: Can now filter and move tasks to specific
  396. workers if :setting:`CELERY_WORKER_DIRECT` is enabled.
  397. Among other improvements, the following functions have been added:
  398. * ``move_direct(filterfun, **opts)``
  399. * ``move_direct_by_id(task_id, worker_hostname, **opts)``
  400. * ``move_direct_by_idmap({task_id: worker_hostname, ...}, **opts)``
  401. * ``move_direct_by_taskmap({task_name: worker_hostname, ...}, **opts)``
  402. - :meth:`~celery.Celery.default_connection` now accepts a pool argument that
  403. if set to false causes a new connection to be created instead of acquiring
  404. one from the pool.
  405. - New signal: :signal:`celeryd_after_setup`.
  406. - Default loader now keeps lowercase attributes from the configuration module.
  407. .. _version-3.0.1:
  408. 3.0.1
  409. =====
  410. :release-date: 2012-07-10 06:00 P.M BST
  411. :by: Ask Solem
  412. - Now depends on kombu 2.2.5
  413. - inspect now supports limit argument::
  414. myapp.control.inspect(limit=1).ping()
  415. - Beat: now works with timezone aware datetime's.
  416. - Task classes inheriting ``from celery import Task``
  417. mistakingly enabled ``accept_magic_kwargs``.
  418. - Fixed bug in ``inspect scheduled`` (Issue #829).
  419. - Beat: Now resets the schedule to upgrade to UTC.
  420. - The :program:`celery worker` command now works with eventlet/gevent.
  421. Previously it would not patch the environment early enough.
  422. - The :program:`celery` command now supports extension commands
  423. using setuptools entry-points.
  424. Libraries can add additional commands to the :program:`celery`
  425. command by adding an entry-point like::
  426. setup(
  427. entry_points=[
  428. 'celery.commands': [
  429. 'foo = my.module:Command',
  430. ],
  431. ],
  432. ...)
  433. The command must then support the interface of
  434. :class:`celery.bin.base.Command`.
  435. - contrib.migrate: New utilities to move tasks from one queue to another.
  436. - :func:`~celery.contrib.migrate.move_tasks`
  437. - :func:`~celery.contrib.migrate.move_task_by_id`
  438. - The :event:`task-sent` event now contains ``exchange`` and ``routing_key``
  439. fields.
  440. - Fixes bug with installing on Python 3.
  441. Fix contributed by Jed Smith.
  442. .. _version-3.0.0:
  443. 3.0.0 (Chiastic Slide)
  444. ======================
  445. :release-date: 2012-07-07 01:30 P.M BST
  446. :by: Ask Solem
  447. See :ref:`whatsnew-3.0`.