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RELEASE_NOTES
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Copyright 2008 Google Inc.
All rights reserved.
App Engine Python SDK - Release Notes
Version 1.7.6
===============================
- The new and improved development appserver, which was previewed last release,
now becomes the default. The old development appserver has been renamed to
old_appserver.py and will remain available until the first release after
1 July 2013 when it will be removed from the SDK. For more information, please
visit
http://developers.google.com/appengine/docs/python/tools/devserver
- A Go runtime has been added to the new and improved development appserver.
- The Debug log level for the runtime has been enabled.
- Improvements to the App Engine billing system will be rolled out gradually to
all apps. Fore more information, please visit
http://developers.google.com/appengine/docs/billing
- The application summary no longer displays the default version of a running
application, instead it lists the application as 'RUNNING'. In an upcoming
release applications will have multiple logical sub components, each of which
will have a default version. This UI update is meant to align with this
functionality.
- Projection queries are now a fully supported GA feature.
- The XMPP API now has multi-JID get_presence. This provides the ability to get
the availability of multiple users.
- Django 1.4 and Webob 1.2.3 are now promoted to GA.
- Apps now have the ability to fopen() files that are declared as static files
in app.yaml using the application_readable flag.
- The dev_appserver now allocates automatic ids using the 'scattered' id
allocation policy by default. For more information, please see "Specifying the
Automatic ID Allocation Policy":
https://developers.google.com/appengine/docs/python/tools/devserver#Using_the_
Datastore
- Admin console dashboard charts and current load/errors reports will be moving
to a new, more reliable backend. The change will be gradually rolling to users
of admin console over the next few weeks.
- New Search API quotas are now displayed in the Admin Console. These quotas are
not currently enforced, but will be part of the pricing model for the Search
API in a future release.
- The experimental Search API's ability to explicitly sort search results by
SortExpression.RANK_FIELD_NAME (i.e. _order_id) field in ascending order has
been removed.
- Globally consistent indexes in the experimental Search API are now deprecated
and will be removed in the next release.
- Task Queue tasks may now be added and deleted asynchronously. This allows
applications to perform common task queue operations without blocking. This is
an experimental feature.
- In the experimental MapReduce framework, shards that encounter Files API
errors will retry three times before the entire job fails.
- Google Protocol RPC now supports deserializing and reserializing of unexpected
fields.
- A new Google Protocol RPC field type for supporting datetime values has been
added. For more information, please visit
https://developers.google.com/appengine/docs/python/tools/protorpc
- Fixed an issue which caused an incorrect server error message when setting the
default version on the admin console, though the version was set correctly.
- Fixed an issue where get_indexes() didn't correctly populate the namespace
when run from the new dev_appserver.
- Fixed an issue with the new dev_appserver failing on invalid login cookies. It
now uses type="email" for email in the login form.
https://code.google.com/p/appengine-devappserver2-experiment/issues/detail?
id=36
- Fixed an issue with the new dev_appserver to have fix_sys_path add the
necessary libraries to sys.path making it now compatible with the testbed.
https://code.google.com/p/appengine-devappserver2-experiment/issues/detail?
id=45
Version 1.7.5
===============================
- New instance classes F4_1G and B4_1G are now available. These instances have
compute capacity equal to F4/B4 but with a maximum of 1G RAM instead
of 512MB.
- The Logs API stub now uses sqlite in the dev_appserver. Please note that the
--persist_logs flag is still needed in order for logs to be saved.
- The deprecated classes and functions AddError, AddResult,
ListIndexesResponse, ListResponse, RemoveError, RemoveResult, and
list_indexes were removed from the Search API in the SDK. If your app
references any of these classes or functions, you must deploy a new version
without these references before the next release of App Engine. If you do not
do this, your app may stop working in production.
- The Conversion API, which was decommissioned last release, has been removed
from the SDK. In a future release, the API will be removed from the runtime
and any attempt to import the library will raise an exception. Applications
in production that import the library should be fixed as soon as possible.
- Matplotlib v1.2.0 is now available as an experimental feature.
- Django 1.4 has been upgraded to 1.4.3. This is an experimental feature.
- We are including a preview of a new and improved version of our development
server. The new version is faster, provides more faithful support for
complex multi-threaded applications, has better support for Datastore and
supports more libraries. Try dev_appserver2.py in the SDK. This is an
experimental feature. For more information, please visit
http://code.google.com/p/appengine-devappserver2-experiment/
- The Channel API now has the ability to send channel messages from any app
version or backend regardless of where the channel was created.
http://code.google.com/p/googleappengine/issues/detail?id=5123
- The URL Fetch service now supports PATCH method requests.
http://code.google.com/p/googleappengine/issues/detail?id=6316
- The Mail API can now send mail bounce notifications to the app. The
notification will be delivered to /_ah/bounce if mail_bounce inbound
services are enabled.
http://code.google.com/p/googleappengine/issues/detail?id=7451
- The Blobstore service now returns the created filename instead of the blobKey
when using Cloud Storage
http://code.google.com/p/googleappengine/issues/detail?id=8337
- Fixed an issue with os.urandom throwing an exception in dev_appserver2 when
using OS X.
http://code.google.com/p/appengine-devappserver2-experiment/issues/
detail?id=23
- Fixed an issue with time.tzset not existing in dev_appserver2 for Windows.
https://code.google.com/p/appengine-devappserver2-experiment/issues/
detail?id=26
Version 1.7.4
===============================
- Background threads is now a GA feature.
- Traffic Splitting is now a GA feature.
- Task Queue Statistics is now a GA feature.
- Logs API now has the ability to fetch requests based on a list of
request_ids. Currently, this only works in production and is not supported
in dev_appserver.
- Python Interpreter has been upgraded to 2.7.3.
- WebOb 1.2.3 is now available for Python 2.7. Users using the undocumented
1.2.2 should update their app, since that version will be removed in the
next release.
- DISTINCT for Datastore queries is now available as an experimental feature.
- Matplotlib v1.1.1 is now available as an experimental feature.
- The decommissioned Conversion API has been removed.
- Added a warning that the interactive console will be disabled if a user runs
dev_appserver with the --address flag.
- JSON properties are now restrictable to list or dictionaries in NDB.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=223
- Users can now set how many columns can be viewed in the Datastore Viewer via
a drop-down menu which customizes the number of columns displayed.
http://code.google.com/p/googleappengine/issues/detail?id=8158
- Fixed an issue with expandos throwing an error when containing nested
expandos in NDB.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=216
- Fixed an issue with properties not being added to structured properties in
NDB.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=220
- Fixed an issue with PyCrypto raising an ImportError when installing
globally into site-packages.
http://code.google.com/p/googleappengine/issues/detail?id=1627
- Fixed an issue with PyCrypto not working with OSX 10.8 or Ubuntu Precise.
http://code.google.com/p/googleappengine/issues/detail?id=7925
- Fixed an issue with backends.get_instance returning thread ID instead of
integer instance ID in production.
http://code.google.com/p/googleappengine/issues/detail?id=8338
- Fixed an issue with Datastore Backup failing when a schema has a very large
number of properties.
http://code.google.com/p/googleappengine/issues/detail?id=8363
- Fixed an issue with dev_appserver not reloading changed code.
http://code.google.com/p/googleappengine/issues/detail?id=8383
- Fixed an issue with custom ordered queries not working using sqlite on the
dev_appserver.
http://code.google.com/p/googleappengine/issues/detail?id=8390
- Fixed an issue with users being unable to change Authentication Type after
app creation in the Admin Console.
http://code.google.com/p/googleappengine/issues/detail?id=8394
Version 1.7.3
===============================
- Django 1.4 is now supported in Python 2.7
- The file-based implementation of the Datastore stub will be deprecated soon.
- A warning message informing users that SQLLite stub will be the default
stub soon is now displayed.
- Datastore Index stats now report type instead of representation-type.
- Rich sort expressions beyond single field names are now supported in the
Search API for dev_appserver.
- search.MIN_NUMBER_VALUE and search.MAX_NUMBER_VALUE are now public in the
Search API.
- Globally Consistent Indexes are now deprecated in the Search API.
- search.list_indexes() has been deprecated and replaced with
search.get_indexes() in the Search API.
- Index.list_documents() has been deprecated and replaced with
Index.get_range() in the Search API.
- Added method Index.get(doc_id) to get a document by its ID in the Search API
- Index.add() has been deprecated and renamed to Index.put() in the Search API.
- Index.remove() has been deprecated and renamed to Index.delete() in the
Search API.
- The AddDocumentError and RemoveDocumentError classes, which were already
deprecated, have been removed from the Search API.
- OperationCode.object_id and OperationCode.document_id, which were already
deprecated, have been removed from the Search API.
- Users can now change authentication options after app creation
http://code.google.com/p/googleappengine/issues/detail?id=483
- Fixed an issue with Datastore backup/restore finalization steps only looking
at the default queue in Admin Console.
- Fixed an NDB issue with Structured Properties not converting dict properly.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=207
- Fixed an NDB issue where multiple async transactions corrupt old
Datastore connections.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=209
- Fixed an NDB issue with fetch() with offset > 1000 returning an empty list.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=210
- Fixed an issue with 2 factor authentication not giving useful error messages.
http://code.google.com/p/googleappengine/issues/detail?id=8020
- Fixed an issue in the Search API snippeting breaking if the field contains
a single word in dev_appserver.
http://code.google.com/p/googleappengine/issues/detail?id=8171
- Fixed an issue with PyCrypto AES cipher not running on dev_appserver.
http://code.google.com/p/googleappengine/issues/detail?id=8188
Version 1.7.2
===============================
- Paid applications can now upload Static files and Code > 1GB. Additional
storage will be billed at $0.13/GB per month. Free applications will
continue to be provided 1GB of storage at no charge. Free quota will apply
per application.
- PyCrypto 2.6 is now a GA feature for Python 2.7
- The Conversion API will be decommissioned soon. Developers using this API
will receive a warning message. Please find an alternative document
conversion/OCR service.
- You can now fetch Task Queue Statistics. This allows you to fetch
statistics and information about your task queue from within your
application. Statistics include information such as the number of tasks
in a queue, how many tasks were executed in the last minute and enforced
rate. This is an experimental feature.
- Added Timezone selection widget in Admin Console Admin Logs.
- Added a warning message about caching when modifying or deleting datastore
entities.
- Added a flush cache button to dev_appserver and Admin Console.
- Attempting to update multiple entity groups in a single transaction
in Datastore now throws an error suggesting to use XG transactions.
- Search API now has a string maximum length limit of 2000 characters.
- We now allow a user with multiple google accounts the ability to create an
app if they are an SMS verified user.
http://code.google.com/p/googleappengine/issues/detail?id=1419
- A more useful error message now displays when a deployment fails
due to local date/time settings being improperly set.
http://code.google.com/p/googleappengine/issues/detail?id=2033
- Cron Descriptions may now include non-ASCII characters.
http://code.google.com/p/googleappengine/issues/detail?id=2641
- App Config Service Delete App Version Call Count quota raised to
10,000/day.
http://code.google.com/p/googleappengine/issues/detail?id=2808
- Queries with transactions are now supported in Remote API.
http://code.google.com/p/googleappengine/issues/detail?id=3643
- There are now more descriptive error messages for Datastore Admin
deadline exceeded errors in stack trace.
http://code.google.com/p/googleappengine/issues/detail?id=5413
- Replaced error code “Administrators cannot be removed right now”
with a more descriptive message.
http://code.google.com/p/googleappengine/issues/detail?id=7080
- Fixed an issue with namespace dropdown in Admin Console appearing blank
even though the URL specified namespace is correct.
- Fixed an issue where Model.get_by_id() returns none in dev_appserver
whereas this is not allowed in production.
- Fixed an issue with dev_appserver app_identity.get_default_version_hostname()
- Fixed an issue with mail service sendToAdmins() failing when using
multi-arg message constructor.
- Fixed an issue with dev_appserver for mimetypes.guess_type()
- Fixed an issue with runtime failing to use scope with OAuth under certain
conditions.
- Fixed an issue with AppConfigNotFound error.
http://code.google.com/p/googleappengine/issues/detail?id=686
- Fixed an issue with static path with + in dev_appserver.
http://code.google.com/p/googleappengine/issues/detail?id=888
- Fixed an issue with support for models with large numbers of properties in
Admin Console Dataviewer where previously the page would fail to render.
http://code.google.com/p/googleappengine/issues/detail?id=937
- Fixed an issue with multi-line string property not editing correctly
in Dataviewer.
http://code.google.com/p/googleappengine/issues/detail?id=1725
- Fixed an issue with URLFetch mimetools.Message parsing incorrectly.
http://code.google.com/p/googleappengine/issues/detail?id=2011
- Fixed an issue with the behavior of Expires header in dev_appserver
http://code.google.com/p/googleappengine/issues/detail?id=2106
- Fixed an issue with Content-Disposition header being removed if filename
contains utf-8 characters.
http://code.google.com/p/googleappengine/issues/detail?id=2212
- Fixed an issue with incoming Mail API where encoded headers failed to
decode.
http://code.google.com/p/googleappengine/issues/detail?id=2288
- Fixed an issue with non-ascii text displaying incorrect values
when posted by URL created by blobstore.create_upload_url()
http://code.google.com/p/googleappengine/issues/detail?id=2749
- Fixed an issue with using sendmail in Mail API.
http://code.google.com/p/googleappengine/issues/detail?id=3106
- Fixed an issue with appcfg.py cron_info giving the wrong timezone information.
http://code.google.com/p/googleappengine/issues/detail?id=3307
- Fixed an issue with Paging link in Datastore viewer not working with # or &
http://code.google.com/p/googleappengine/issues/detail?id=3591
- Fixed an issue with rounding errors in crop image transform on dev_appserver.
http://code.google.com/p/googleappengine/issues/detail?id=3647
- Fixed an issue with TypeError being incorrectly raised when attachment
has Character Set and Language Information.
http://code.google.com/p/googleappengine/issues/detail?id=3836
- Fixed an issue with Mail API attachments in unicode failing
in_check_attachments()
http://code.google.com/p/googleappengine/issues/detail?id=3900
- Fixed an issue with ereporter not reporting errors when applications
use namespaces.
http://code.google.com/p/googleappengine/issues/detail?id=4212
- Fixed an issue with Dataviewer GQL stripping new lines after initial run
and a user paginates results.
http://code.google.com/p/googleappengine/issues/detail?id=4246
- Fixed an issue with Python Unicode prefix in Datastore viewer.
http://code.google.com/p/googleappengine/issues/detail?id=4275
- Fixed an issue with get_serving_url for images giving non-cacheable URLs
in dev_appserver.
http://code.google.com/p/googleappengine/issues/detail?id=4402
- Fixed an issue with fancy_urllib using squid proxy server with
authentication.
http://code.google.com/p/googleappengine/issues/detail?id=4849
- Fixed an issue with custom admin page not displaying when restricted to
only admins.
http://code.google.com/p/googleappengine/issues/detail?id=5117
- Fixed an issue with dev_appserver_import_hook.py handling Crypto import
accounts.
http://code.google.com/p/googleappengine/issues/detail?id=4612
- Fixed an issue with Remote API gzip compression for transmitted data.
http://code.google.com/p/googleappengine/issues/detail?id=5298
- Fixed an issue with remote API shell not having pwd in Python Path.
http://code.google.com/p/googleappengine/issues/detail?id=5317
- Fixed an issue with Admin Console Logs < 30 minutes not being available.
http://code.google.com/p/googleappengine/issues/detail?id=5494
- Fixed an issue with Apps that are using Mail API reporting
“No Provider for address type rfc822” error.
http://code.google.com/p/googleappengine/issues/detail?id=5769
- Fixed an issue with concurrent write access to Datastore stubs.
http://code.google.com/p/googleappengine/issues/detail?id=6058
- Fixed an issue with Viewers being able to prohibit code downloads.
http://code.google.com/p/googleappengine/issues/detail?id=6255
- Fixed an issue with billing applications that are disabled.
http://code.google.com/p/googleappengine/issues/detail?id=6344
- Fixed an issue with deploying to an existing version
when an app has 10 versions.
http://code.google.com/p/googleappengine/issues/detail?id=6803
- Fixed an issue with bulkloader “model” class not uploading correctly.
http://code.google.com/p/googleappengine/issues/detail?id=6907
- Fixed an issue with TextProperty in Datastore viewer.
http://code.google.com/p/googleappengine/issues/detail?id=6997
- Fixed an issue with appcfg.py request_logs failing with ~oauth2
http://code.google.com/p/googleappengine/issues/detail?id=7011
- Fixed an issue with editing a bytestring field in Datastore viewer.
http://code.google.com/p/googleappengine/issues/detail?id=7046
- Fixed an issue with dev_appserver clearing after restart. This is a
Windows only bug.
http://code.google.com/p/googleappengine/issues/detail?id=7244
- Fixed an issue with Cron schedule failing on 1st day of month.
http://code.google.com/p/googleappengine/issues/detail?id=7286
- Fixed an issue with gzip compression for application/plist content type.
http://code.google.com/p/googleappengine/issues/detail?id=7641
- Fixed an issue with datetime.datetime.fromtimestamp() in python 2.7
http://code.google.com/p/googleappengine/issues/detail?id=7819
- A note about an upcoming change: starting with the 1.7.3 release
of App Engine, data statistics will report statistics on property type
usage by indexes using the documented property type names ("Integer",
"Key", etc, see
https://developers.google.com/appengine/docs/python/datastore/stats)
rather than the current property representation names ("INT64",
"REFERENCE", etc, see http://goo.gl/db5dT). This will affect the
__Stat_PropertyType__, __Stat_PropertyType_Kind__,
__Stat_PropertyType_PropertyName_Kind__ and their per-namespace equivalents.
This will also affect the displayed "Breakdown by Property Type" under the
"Datastore Statistics" in your application's console.
Version 1.7.1
===============================
- The URLFetch API now supports multiple cookie headers.
http://code.google.com/p/googleappengine/issues/detail?id=3379
- You can download 90 days worth of Usage Reports for your application from the
Billing History page of the Admin Console.
- Task Queue requests now include an X-AppEngine-TaskExecutionCount that counts
the number of times a task was run by an instance.
- Added support for multiple files to be deleted using the Files API.
- Added support to delete files from Google Cloud Storage using the Files API.
- Added a REQUEST_LOG_ID to be written in the logs and as an environment
variable. This can be used to later identifying that request in the
application logs.
- The Memcache Viewer now supports namespaces.
http://code.google.com/p/googleappengine/issues/detail?id=7245
- The Mail API now supports the following headers for outgoing mail: List-Id,
List-Unsubscribe, On-Behalf-Of, Resent-Date, Resent-From, Resent-To.
http://code.google.com/p/googleappengine/issues/detail?id=2559
http://code.google.com/p/googleappengine/issues/detail?id=7672
- PyCrypto 2.6. is now supported in the Python 2.7 runtime.
http://code.google.com/p/googleappengine/issues/detail?id=7884
- NDB now throws a BadProjectionError when trying to perform a projection query
on an unknown or unindexed property.
- NDB Tasklets use the namespace from when it was called, not the namespace from
when it is performed.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=190
- NDB Properties' string representation size is limited to the max string
length for Blob and Text properties.
- Appstats provides an interactive shell for observing RPC behavior of calls
immediately.
- Appstats now contains information about the cost of the RPCs made during the
request.
- The Images API now supports specifying the default pixel color to fill in for
image types that don't support transparent images, such as JPEG.
- We've added full asynchronous API support in the Images API.
- Added an error to the Images API to indicate when a blob being referenced is
not found or not accessible.
- Made the Python search limits public in the Search API.
- Added namespace support for the Search API in the Python SDK.
http://code.google.com/p/googleappengine/issues/detail?id=7670
- Added support in the Search API for simple sorting in the SDK.
http://code.google.com/p/googleappengine/issues/detail?id=7456
- The Testbed testing framework now supports the Logservice API.
- Added support in the Files API to list Google Cloud Storage files.
- Improve the MapReduce File API Reader to support multiple files and file
formats.
- Fixed an issue with the App Engine satisfaction survey in the Admin Console
which was released in 1.6.6, which will be re-enabled in this release.
- Fixed an issue with Search API websafe cursors not being returned as a
websafe value.
- Fixed an issue where SearchRequest was returning errors that weren't
available as search.Error subclasses.
- Fixed an NDB issue where entities over 1000000 bytes where written to
memcache, causing failure.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=193
- Fixed NDB AutoBatcher error handling.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=196
- Fixed an issue where Appstats assuming all objects have a __class__ attribute
resulted in an error.
http://code.google.com/p/googleappengine/issues/detail?id=5668
- Fixed an issue where there was unbalanced string quoting in Appstats
formatting.
http://code.google.com/p/googleappengine/issues/detail?id=5976
- Fixed an issue where search indexes were not persisted in the SDK.
http://code.google.com/p/googleappengine/issues/detail?id=6791
- Fixed an issue where an error in formatter.py in Appstats was being thrown.
http://code.google.com/p/googleappengine/issues/detail?id=7034
- Fixed an issue in the SDK where the Search API did not support boolean queries
on a field.
http://code.google.com/p/googleappengine/issues/detail?id=7247
- Fixed an issue where numeric and date comparators were not supported in the
Search API in the Python SDK.
http://code.google.com/p/googleappengine/issues/detail?id=7247
- Fixed an issue where Appstats didn't show a detailed view of an RPC when using
the Python 2.7 runtime.
http://code.google.com/p/googleappengine/issues/detail?id=7558
- Fixed a search issue where snippets failed to highlight when a capital letter
is used in a search term.
http://code.google.com/p/googleappengine/issues/detail?id=7665
- Fixed an issue where the SDK Admin tool couldn't browse search indexes
containing unicode characters.
http://code.google.com/p/googleappengine/issues/detail?id=7791
- Fixed an issue where traffic splitting by cookie was not working.
http://code.google.com/p/googleappengine/issues/detail?id=7813
- Fixed an issue where RequestTooLargeError was being incorrectly thrown using
Python 2.7.
http://code.google.com/p/googleappengine/issues/detail?id=7820
- Fixed a memcache race condition.
http://code.google.com/p/googleappengine/issues/detail?id=7864
- Fixed a Search issue in the SDK where a query that does not match all search
terms resulted in divide-by-zero.
http://code.google.com/p/googleappengine/issues/detail?id=7943
Version 1.7.0
===============================
- You can now configure your custom domain to serve HTTPS requests with App
Engine. You can choose either an SNI, VIP, or SNI and VIP configuration. SNI
costs $9/month for 5 certificates. A VIP costs $99/month.
https://developers.google.com/appengine/docs/ssl
- Premier customers now have the option to create applications to be served from
datacenters located in the European Union.
- Developers can configure their HRD app to use Google's PageSpeed Service,
which automatically speeds up serving of content for your application. The
PageSpeed Service costs $0.39/gigabyte in addition to the normal App Engine
bandwidth charges.
https://developers.google.com/appengine/docs/adminconsole/performancesettings#pagespeed
- The Search API now contains support for storing and searching on GeoPoints.
- The total size of all application versions is now limited to 1 GB. In the
future, you'll be able to purchase additional storage for your application
code.
- Logs API calls are now $.12/gigabyte for all data read from the Logs API over
the first 100MB.
- You can now specify a time frame of up to 1 year for the retention of your
application logs. All storage above 1 GB is billed based on the prices for
logs storage.
- You can now specify HTTP headers on static content for your application.
- The HRD Blob Migration tool is now generally available.
- After using the datastore backup utility, you can now restore that backup
to a new app id.
- It will not be possible to create new authorizations for M/S applications to
access Cloud SQL instances.
- You can now delete a Google Cloud Storage object using blobstore.delete().
- You can now fetch a Google Cloud Storage object using blobstore.fetch().
- You can now store keys for a Google Cloud Storage object in the datastore.
- The create_upload_url call now works for Google Cloud Storage objects.
- You can now use get_serving_url() and delete_serving_url() for Google
Cloud Storage buckets.
- Projection queries are now supported in NDB.
- In NDB, app and namespace are now keyword arguments to get_by_id().
- Context().call_on_commit() added to NDB for adding a callback to be executed
upon successful commit of a transaction.
- NDB Context.memcache_* ops now accept unicode.
- NDB has added support for storing protorpc.Message objects.
- Improved error messaging for multiple repeated=True levels with
StructuredProperty in NDB.
- PyAMF is now fully launched.
- We've increased various Search API limits. New limits are a maximum of 1000
documents returned from search() or list_documents(), a maximum of 1000
indexes returned from list_indexes(), and a maximum offset of 1000 for
search() or list_indexes()
- Fixed an issue where the Search API did not enforce limits on NumberFields.
- Fixed an issue in the SDK where SortExpression did not enforce the
presence of a default_value set when required.
- Fixed an issue where lxml did not support unicode parsing.
http://code.google.com/p/googleappengine/issues/detail?id=7158
- Fixed a javascript syntax error in the Admin Console.
http://code.google.com/p/googleappengine/issues/detail?id=7566
- Fixed an issue in SDK admin viewer where a TemplateDoesNotExist error was
thrown when clicking on any Full-Text Search index.
http://code.google.com/p/googleappengine/issues/detail?id=7598
- Fixed an issue in the Search API tab of the Admin Console where it threw an
error displaying non-ascii characters.
http://code.google.com/p/googleappengine/issues/detail?id=7601
Version 1.6.6
===============================
- On May 8, 2012 we released an experimental Search API.
http://googleappengine.blogspot.com/2012/05/looking-for-search-find-it-on-google.html
- The Admin Console now displays the quotas for Search API Calls and Search
Stored Data.
- The Search API has deprecated the order_id attribute on Document class. It has
been replaced with the rank attribute.
- The Search API has deprecated the document attribute on ListResponse and
replaced it with a result attribute. Also the document_id attribute on
OperationResult class is deprecated and replaced with the id attribute.
- Fixed an issue where unicode is not consistently handled in the Python Search
API.
- App creation for apps using the Master/Slave datastore is now restricted to
only those users who already own a Master/Slave app.
- Apps with billing enabled are now able to configure up to 100 cron jobs.
- Admin Console can no longer be included in an <iframe>. To prevent
clickjacking attacks on the Admin Console, we are now setting
X-Frame-Options: SAMEORIGIN. To read more about clickjacking, please read:
https://www.owasp.org/index.php/Clickjacking.
- The Admin Console will now periodically prompt administrators to take an
optional App Engine satisfaction survey.
- You can now use the third party PyAMF library with Python 2.7. This is
available as an experimental feature.
- For NDB, Rollback has been added to the default list of flow exceptions.
http://code.google.com/p/appengine-ndb-experiment/issues/detail?id=179
- Fixed an issue where large datastore backups were unable to be deleted.
- Fixed an issue where datastore backups fail due to an ASCII decoding issue.
- Fixed an issue where the SDK did not import subpackages correctly when using
import hooks.
- Fixed an issue where running a projection query on a multi-valued property
with an equality filter did not return any results.
- Fixed an issue where unicode environment variables were dropped in Appstats
when using Python 2.7.
http://code.google.com/p/googleappengine/issues/detail?id=6448
- Fixed an issue where XG transactions did not work with the Remote API.
http://code.google.com/p/googleappengine/issues/detail?id=7238
Version 1.6.5
===============================
- You can now perform datastore queries that return a subset of your entity
properties with the same performance and cost of a keys-only query. This
feature is experimental.
- In the High Replication Datastore, there is a new metadata kind,
__entity_group__, that has a numeric __version__ property. This property is
guaranteed to increase on every change to the entity group.
- The Images API now supports manipulating objects hosted on Google Cloud
Storage.
- In the Images API, the get_serving_url call now optionally allows you to
specify if the URL you are generating should be served over https.
- In the Task Queue REST API, you can now specify a tag when you insert a task
on a Pull Queue.
- In the Task Queue API, you can specify a deadline for the lease_tasks call.
The default deadline has been increased from 5 seconds to 10 seconds.
- You can now use cron to schedule Datastore backups.
- The Datastore Admin now has a page that displays information on the status of
your Datastore backups and restores.
- You can now abort your Datastore backup or restore from the Datastore Admin.
- You can now restore a single Datastore Kind from the Datastore Admin from a
Datastore backup.
- In the Admin Console, you can report production issues with your application
directly to Google from the application's pages. Simply click the "Report
Production Issues" link, fill out the requested information, and submit.
- All user requests have X-AppEngine-Region, X-AppEngine-City, and
X-AppEngine-CityLatLong headers which contain location information based on
the IP address of the client request. For a full description of these headers,
see:
https://developers.google.com/appengine/docs/python/runtime#Request_Headers
- We have added support for concurrent transactions to @db.transactional and
db.run_in_transaction_options() along with other transaction propagation
options.
- We've introduced an experimental new Mac Installer that only supports Python
2.7.
- In your app.yaml file, you can include an env_variables stanza that will set
the given environment variables in your application's runtime.
- Jinja2 now includes the _debugsupport module.
- Fixed an issue with the dev_appserver where it defaulted the HTTP
Content-Type of a request to text/plain instead of text/html.
- Fixed an issue where the SDK would include some indexes that were not needed
in production.
- Fixed an issue in the SDK where the SDK admin console would not display utf-8
encoded list property values.
http://code.google.com/p/googleappengine/issues/detail?id=7079
Version 1.6.4
===============================
- Billed applications that have specified additional logs retention over 1 GB
are now being charged for that storage at $0.24/GB/month (the first gigabyte
of logs storage is free). All logs beyond an application's specified storage
limit will be deleted. Please examine your Application Settings page to verify
you are retaining the desired amount of logs.
- Datastore statistics now show the amount of storage used by application
indexes.
- We have released an experimental utility for migrating your application's
blobs at the same time you migrate your datastore data. You can opt-in to
blob migration in the Admin Console when you start your migration.
- We have updated the experimental Backup/Restore functionality to include
the option to backup and restore to Google Cloud Storage.
- The NDB datastore API is now generally available. For full release notes
on the version 0.9.9 and 1.0.0 fixes that have been integrated into the
API see:
http://code.google.com/p/appengine-ndb-experiment/source/browse/RELEASE_NOTES?name=sandbox
- In the Python 2.7 runtime, Background threads are available as an
experimental release when using App Engine backends.
- Using the Blobstore API's send_blob() method, your application can serve
objects hosted on Google Storage for Developers.
- The Admin Console now provides a Memcache viewer that lists Memcache stats and
can display Memcache content based on key.
- In the Capabilities API stub in the SDK, you can now enable or disable
a capability using SetPackagedEnabled.
- The Windows installer now prompts to install Python 2.7 instead of
Python 2.5.
- The Testbed API now supports the Capabilities API.
- GQL queries in the Admin Console no longer throw an error when a trailing
semi-colon is included.
- The Datastore API now includes a NonTransactional decorator to ensure that
a function is run outside of a transaction. Existing transactions are paused
while the function is executing.
- The Datastore Admin tab in the Admin Console now shows entities from every
namespace.
http://code.google.com/p/googleappengine/issues/detail?id=3962
- Fixed an issue with _strptime when threadsafe was specified.
http://code.google.com/p/googleappengine/issues/detail?id=6489
- Fixed an issue where DatastoreFileStub.__del__ fails on tempfile.msktemp.
http://code.google.com/p/googleappengine/issues/detail?id=6749
- WebOb 1.1.1 is now included in the SDK, and used by default there when
Python 2.7 is specified.
http://code.google.com/p/googleappengine/issues/detail?id=7014
- Fixed an issue where the index.yaml file was cleared if your skip_files entry
differs from the default skip_files list.
http://code.google.com/p/googleappengine/issues/detail?id=7031
Version 1.6.3
===============================
- In the Admin Console, you can use new the Traffic Splitting feature to send a
certain percentage of traffic to a non-default application version. The
traffic is split by either cookie or IP address.
- Emails that are sent from Google Apps domains email addresses where the domain
has been set up to use DKIM will be signed: when an email was from a request
that originated on that app's domain or any time the email was sent from
an app adminstrator, including when that email is sent from a cron job or task
queue request.
- In the Admin Console, you can now choose how much and how long you'd like to
store logs. All apps get 1G for free and eventually will be able to pay for
more, while the amount can be increased this release we won't start charging
for the additional capacity until the next release at the earliest.
- The instances screen in the Admin Console now has a button to shut down
a specific instance.
- Each application log has a link to the instance that served the request. If
the instance is no longer serving requests, a message will be displayed.
- The TaskQueue API now supports the ability to tag a Pull Queue task. You may
then lease tasks by tag. This feature is experimental.
- Using Google Apps wildcard domain mappings, you can access alternate
versions of your app via a custom domain.
- Push and Pull Queues are now listed separately in the SDK development console.
- Developer documentation for the experimental NDB API, the replacement for
db.py, is now available.
- Appcfg now supports OAuth2.
- webapp 2.5.1 is now available in the Python 2.7 runtime.
- Django 1.3 is now available in the Python 2.7 runtime.
- GQL Query now supports custom type casting for list elements for "IN" filters.
- Fixed an issue where StringProperty's validate() didn't check the 500 byte
limit.
http://code.google.com/p/googleappengine/issues/detail?id=4030
- Fixed an issue where the datastore admin didn't work with Federated Login.
http://code.google.com/p/googleappengine/issues/detail?id=4111
- Fixed an issue in the SDK where failing to call _RemoveTxn in the
datastore_stub_util caused a memory leak:
http://code.google.com/p/googleappengine/issues/detail?id=6157
- Code that inherits from the deferred library's TaskHandler can now define
custom handling of exceptions.
http://code.google.com/p/googleappengine/issues/detail?id=6478
- Fixed an issue where logging in the SDK was broken in Windows 7 using
Python 2.7.2.
http://code.google.com/p/googleappengine/issues/detail?id=6756
- Fixed an issue in the SDK where the Conversion API call limited was limited
to 1 MB when the production limit is 2 MB.
http://code.google.com/p/googleappengine/issues/detail?id=6794
- Fixed an issue so that a deferred task retries like a push queue task when
using the SingularTaskFailure exception:
http://code.google.com/p/googleappengine/issues/detail?id=6412
Version 1.6.2
===============================
- The Admin Console Datastore Admin has added experimental backup and restore
functionality. The job occurs within your application and counts against your
application quota, including Instance Hours, Datastore Ops and Datastore
Storage.
- Developers can now specify how long a channel token will last until it
expires, with the default remaining two hours. Channel API quota is now
measured both in calls to create a channel and the number of hours of channel
time requested. The maximum hours of quota is the maximum number of channel
creation calls * 2, so free apps get 200 hours of requested channel token
time.
- Python Django now work with Cloud SQL without additional configuration. For
further information see https://developers.google.com/cloud-sql/.
- Task Queue API requests now include a X-Appengine-TaskETA header, that can be
used to measure task delivery latency.
- The default API deadlines for Blobstore API calls have been raised to 15s for
online and 30s for offline requests, up from 5s.
- The Images API now allows you to stretch an image without maintaining the
aspect ratio.
http://code.google.com/p/googleappengine/issues/detail?id=2220
- The Blobstore API now includes the asynchronous function calls
create_upload_url_async, delete_async, and fetch_data_async.
- Django version 1.3 is now available in the Python 2.5 runtime.
- We've added a django_wsgi builtin to allow easier bootstrapping of Django
applications.
- Mail Quota for App Engine apps that have signed up for billing will only be
increased after the first payment for the app is processed.
- As announced in 1.6.1, in this release for the experimental Python 2.7
runtime, the mapreduce and datastore_admin builtins are not available to apps
deployed to Python 2.7.
- Fixed an issue with remote_api where calling fetch_page() with a page size
of 301 and chaining the calls through the returned cursor was skipping half
of the results.
- Fixed an issue where the PIL _imagingmath module was not available in Python
2.7.
- Fixed an issue where the SDK did not resize images down to 512 pixels by
default, as it does in production.
- Fixed an issue with the Images API where valid images were returning a
NotImageError.
http://code.google.com/p/googleappengine/issues/detail?id=5545
- Fixed an issue where the SDK didn't start when using Python 2.7 and the
--backends flag.
http://code.google.com/p/googleappengine/issues/detail?id=6187
- Fixed an issue where Jinja2 was not included in the SDK for use with Python
2.7.
http://code.google.com/p/googleappengine/issues/detail?id=6265
- Fixed an issue with the sql datastore stub in Python 2.7 where the sqlite
module no longer accepted strings with non-ASCII characters.
http://code.google.com/p/googleappengine/issues/detail?id=6290
- Fixed an issue where gzip did not work with Python 2.7 in the dev_appserver.
http://code.google.com/p/googleappengine/issues/detail?id=6324
- Fixed an issue where urllib2 did not work with Python 2.7.
http://code.google.com/p/googleappengine/issues/detail?id=6567
- Fixed an error in the Datastore Viewer where an error was thrown when viewing
an Entity which defines an index with no properties.
http://code.google.com/p/googleappengine/issues/detail?id=6600
- Fixed an issue where transactional tasks were not enqueued in the SDK when
running in high_replication mode.
http://code.google.com/p/googleappengine/issues/detail?id=6669
Version 1.6.1
===============================
- You can now configure Frontend Instance Classes from your Admin Console's
application settings page. Three classes are available, with increasing
memory, CPU limits, and associated cost. By default, all applications use the
basic frontend instance setting of 128MB memory and 600MHz CPU.
- We've added new functionality to the Log API that will allow you to read your
application's logs programmatically.
- We are releasing an experimental Conversion API that will allow you to convert
between document types including .doc, .html, .pdf, images using OCR, and
more.
- The High Replication Datastore migration utility is now available as a GA
feature, and is no longer experimental.
- The ext.db API query functions (run, fetch, count, get) now accept the keyword
arguments: deadline, read_policy, prefetch_size, batch_size, limit, offset,
start_cursor, end_cursor, keys_only. It is recommended that developers use
Query.run() with a limit or batch_size instead of Query.fetch() when iterating
over results.
- The ext.db API model functions (get, put, delete, allocate_ids) now directly
accept the keyword arguments: deadline, read_policy
- The Blobstore API now supports the multiple="true" attribute to the HTML input
tag.
- Fixed an issue logging unicode objects in the SDK.
- Fixed an issue with the dev_appserver where HTTP HEAD always returned
content-length: 0.
http://code.google.com/p/googleappengine/issues/detail?id=2000
- Fixed an issue in the SDK where importing Crypto.Util.Counter caused an
ImportError.
http://code.google.com/p/googleappengine/issues/detail?id=4168
- Fixed an issue where the SDK didn't work with virtualenv.
http://code.google.com/p/googleappengine/issues/detail?id=4339
- Fixed an issue where cached static files served to IPs on the DoS blacklist
consumed bandwidth quota.
http://code.google.com/p/googleappengine/issues/detail?id=4607
- Fixed an issue that was causing slow serving of requests in the SDK.
http://code.google.com/p/googleappengine/issues/detail?id=6005
- Fixed an issue where the Channel API didn't work in the SDK with Python 2.7.
http://code.google.com/p/googleappengine/issues/detail?id=6267
- Fixed an httplib compatibility issue between Python 2.5 and Python 2.7 in the
SDK.
http://code.google.com/p/googleappengine/issues/detail?id=6271
- Fixed an issue where queries larger than 1MB didn't work with Python 2.7.
http://code.google.com/p/googleappengine/issues/detail?id=6282
- Fixed an error in the SDK on first page load for a handler.
http://code.google.com/p/googleappengine/issues/detail?id=6302
- Fixed an issue in the SDK that caused slowness due to app's logs being written
to the datastore. Set the --persist_logs flag in the SDK if you are using the
Logservice API to read logs.
http://code.google.com/p/googleappengine/issues/detail?id=6355
- WARNING: Starting with the 1.6.2 release of the experimental Python 2.7
runtime, the mapreduce and datastore_admin builtins will not be supported.
Version 1.6.0
===============================
- On November 7th, App Engine will be out of Preview. The new Terms of Service
and previously announced pricing changes will be in effect. Additionally, all
paid apps are now covered by our SLA.
http://code.google.com/appengine/docs/billing.html
- Paid apps can now specify the maximum pending latency for instances and the
minimum number of idle instances for your application in the Admin Console.
- Task Queue storage has been separated in to its own line item. Previously,
this was included in Datastore storage.
- We have released an experimental utility, available in the Admin Console, to
assist in migrating your application to the High Replication datastore. This
utility allows you to copy the bulk of your data in the background, while the
source application is still serving. You then need a brief read-only period to
migrate your application data while you copy the data that has changed from
the time the original copy started.
- Blobstore, which was previously limited to apps with billing enabled, is now
available for all apps.
- We have published a new article on Datastore Index Selection and Advanced
Search which explains our recent improvements to the query planner that make
exploding indexes unnecessary.
http://code.google.com/appengine/articles/indexselection.html
- Applications can now receive xmpp error stanzas at /_ah/xmpp/error.
- In the Admin Console data viewer, you can now filter by namespace from a drop
down menu, if applicable.
- In the Admin Console's Datastore Statistics, we now offer namespace suggest
for filtering stats.
- We have released as experimental the full MapReduce framework.
- The SDK now supports Python 2.7.
- Python 2.7 now supports WebOb 1.1.1, which has some significant bug fixes.
Applications that explicitly set the "webob" version to "1.1" in their
app.yaml files must update the version to "1.1.1".
- The mail_stub.get_sent_messages() call now returns EmailMessage instances.
- Fixed an issue when setting an initial_value in memcache.incr unexpectedly
returned a string.
http://code.google.com/p/googleappengine/issues/detail?id=2012
- Fixed an issue where DoS stats in the Admin Console didn't work for High
Replication apps.
http://code.google.com/p/googleappengine/issues/detail?id=5237
- WARNING: Starting with 1.6.1 (our next release, NOT this release), URLFetch
requests will honor the Accept-Encoding header. If your code sets this header
then it must be prepared to receive content of the specified type. For more
information please see
http://code.google.com/p/googleappengine/issues/detail?id=4978
Version 1.5.5
===============================
- Python 2.7 is now available as an experimental runtime for all applications
using the High Replication Datastore. To upload your app to the Python 2.7
runtime, change the runtime argument in your app.yaml to python27. Note that
the dev_appserver does NOT work with Python 2.7 - you must deploy your
application in order test it.
- We have increased the number of files you can upload with your application
from 3,000 to 10,000.
- We have increased the size limit for a single file uploaded to App Engine from
10MB to 32MB.
- We have increased the Frontend request deadline from 30 seconds to 60 seconds.
- We have increased the online URLFetch maximum deadline from 10 seconds to 60
seconds. The default deadline remains at 10 seconds. The offline maximum deadline
for URLFetch remains at 10 minutes.
- We have increased the URLFetch Post payload from 1MB to 5MB.
- App Engine now supports Cross Group (XG) transactions with the High
Replication Datastore, which allow you to perform transactions across
multiple entity groups.
http://code.google.com/appengine/docs/python/datastore/transactions.html
- We have released an experimental API that can write to Google Storage for
Developers directly from App Engine.
http://code.google.com/appengine/docs/python/googlestorage/overview.html
- We have added a graph to the admin console that displays the number of
instances for which you will be billed.
- In the XMPP API, get_presence() is deprecated in favor of using the inbound
presence handlers documented in
http://code.google.com/appengine/docs/python/xmpp/overview.html#Handling_User_Presence.
- The Task Queue API 'target' parameter now accepts a new value,
taskqueue.DEFAULT_APP_VERSION, which will send the task to the default
frontend version, rather than the version or backend where the 'add' method is
being called.
- In the URLFetch API, make_fetch_call() now returns an RPC object.
- Fixed an issue in the Admin Console where the "Run Now" button did not work
for tasks with a '-' in the name.
- Fixed an issue where the SDK did not decode Base64 encoded blobs.
- Fixed an issue to provide a better error message when using the Mail API to
send email to an invalid user address.
- Fixed an issue in the SDK where a skip_files entry caused an ImportError when
the library was located elsewhere in the PYTHONPATH.
- Fixed an issue in the SDK index viewer where the arrows indicating whether a
query was ascending or descending were not properly rendered.
- Fixed an issue where httplib did not support the deadline argument for
URLFetch calls.
http://code.google.com/p/googleappengine/issues/detail?id=2216
- Fixed an issue where you could not schedule a cron job to run every 100
minutes.
http://code.google.com/p/googleappengine/issues/detail?id=5243
- Fixed an issue in the SDK where failed tasks retried immediately instead of
waiting for 30 seconds.
http://code.google.com/p/googleappengine/issues/detail?id=5587
- Fixed an issue making it possible to modify request headers using the deferred
library.
http://code.google.com/p/googleappengine/issues/detail?id=5861
Version 1.5.4
===============================
- You can now specify the maximum size for a blob in create_upload_url().
- Zigzag merge join queries will now continue scanning up to the 30 second
Datastore query deadline. For zigzag queries that used to generate NeedIndex
errors, many will now succeed. A small percentage will now instead timeout.
- The SDK datastore viewer in the dev console now displays the number of "Write
Ops" for each entity. "Write Ops" are the total number of entity and index
writes that were required to create the entity.
- Added API functionality for making calls to the Memcache API asynchronously.
- Fixed an issue that incorrectly allowed creation of tasks with whitespace in
the url.
- Fixed the error message for "transaction not found" to be more descriptive.
- Fixed an issue where blobstore uploads didn't work in the SDK with the
-a 0.0.0.0 flag set.
- Fixed an issue where --dry_run was broken for upload_data in bulkload.py.
- Fixed an issue where db.Model().to_xml() incorrectly updated auto-updating
properties.
http://code.google.com/p/googleappengine/issues/detail?id=322
- Fixed an issue where the SDK didn't expand the '~' in a file path.
http://code.google.com/p/googleappengine/issues/detail?id=522
- Fixed an issue where is_saved() wasn't valid after db.Model.__init__.
http://code.google.com/p/googleappengine/issues/detail?id=844
- Fixed an issue where GQL IN queries with an empty list returned all entities.
http://code.google.com/p/googleappengine/issues/detail?id=932
- Fixed an issue where the SDK's sqlite stub did not handle cursors on
descending queries correctly.
http://code.google.com/p/googleappengine/issues/detail?id=3121
- Fixed a typo in the SDK's Datastore Stats generator message.
http://code.google.com/p/googleappengine/issues/detail?id=5425
Version 1.5.3
=============================
- We've removed the limit on the size of blob uploads using the Blobstore API.
- You can now send emails with any attachment extension that is not included on
the email attachment extension blacklist.
- Added a db.get_indexes() method to retrieve an application's indexes and
their corresponding states.
- The dev_appserver has been updated to understand the reduced index
requirements of the 1.5.2 datastore query planner changes.
- The Datastore Admin functionality can now be enabled directly in the Admin
Console.
- Added cas(), the compare-and-set function, to the Memcache API.
http://code.google.com/p/googleappengine/issues/detail?id=2139
- Added a set_default_fetch_deadline to the URLFetch API which sets the
URLFetch deadline globally.
- Added app_identity api with methods to get the application id, default
hostname, and service accounts for asserting identity on outbound HTTP calls.
http://code.google.com/appengine/docs/python/appidentity/overview.html
- Added an improved HRD migration tool that requires a read-only period relative
to your datastore write rate (as opposed to your datastore size, which is how
the current version behaves). The tool is not yet generally available. If you
are interested in being an early adopter please fill out this form:
http://goo.gl/3jrXu
- Fixed an issue in the Channel API where jsapi was not served with the correct
mime type.
- Fixed an issue that broke use_library when the Python SDK was located in a
directory that contained the word 'django'.
- Fixed an issue where blobs could not be uploaded using HTTPS.
- Fixed an issue where GQL didn't allow querying for valid kind names
containing '.', '-', and ':' by supporting quoted identifiers.
http://code.google.com/p/googleappengine/issues/detail?id=2584
Version 1.5.2
=============================
- You can now specify the minimum pending latency for instances and the maximum
number of idle instances for your application in the Admin Console.
- The datastore now never requires an exploding index.
http://code.google.com/appengine/docs/python/datastore/queries.html#Big_Entities_and_Exploding_Indexes
- The SDK will now never suggest indexes with the same property repeated, as
such indexes are likely to be exploding indexes.
- The SDK now supports multiple concurrent transactions.
- Datastore stats are now available on a per-namespace basis.
- The queue details page in the Admin Console now contains request header
details, previous run information, and a task payload viewer.
- You can modify the lease on a task leased from a pull queue using the
modify_task_lease() method.
- Pull Task maximum size has been increased to 1MB.
- You can now update the number of available backend instances without needing
to first stop the backend using the "backend configure" appcfg.py directive.
- You can now set the "References" and "In-Reply-To" headers with the Mail API.
http://code.google.com/p/googleappengine/issues/detail?id=2802
- The SDK "application" environment variable will now be prefixed with dev~.
The new preferred way of retrieving your app id is to use
appidentity.get_application_id(). The --default_partition flag can be used
for applications whose code relied on a specific environment variable.
- In the Deferred API, defer() now accepts the _target parameter.
- Added a to_dict() function to db.py which converts a model to a dictionary.
- Added a get_original_metadata() method to the Images API to extract EXIF
information from images.
http://code.google.com/p/googleappengine/issues/detail?id=4133