swift/releasenotes/notes/2_23_0_release-2a2d11c1934f...

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---
features:
- |
Python 3.6 and 3.7 are now fully supported. If you've been testing Swift
on Python 3, upgrade at your earliest convenience.
- |
Added "static symlinks", which perform some validation as they
follow redirects and include more information about their target
in container listings. For more information, see the `symlink middleware
<https://docs.openstack.org/swift/latest/middleware.html#symlink>`__
section of the documentation.
- |
Multi-character strings may now be used as delimiters in account
and container listings.
upgrade:
- |
**Dependency update**: ``eventlet`` must be at least 0.25.0. This also
dragged forward minimum-supported versions of ``dnspython`` (1.15.0),
``greenlet`` (0.3.2), and ``six`` (1.10.0).
fixes:
- |
Python 3 fixes:
* Removed a request-smuggling vector when running a mixed
py2/py3 cluster.
* Allow ``fallocate_reserve`` to be specified as a percentage.
* Fixed listings for sharded containers.
* Fixed non-ASCII account metadata handling.
* Fixed ``rsync`` output parsing.
* Fixed some title-casing of headers.
If you've been testing Swift on Python 3, upgrade at your earliest
convenience.
- |
Sharding improvements
* Container metadata related to sharding are now removed when no
longer needed.
* Empty container databases (such as might be created on handoffs)
now shard much more quickly.
- |
The ``proxy-server`` now ignores 404 responses from handoffs that have
no data when deciding on the correct response for object requests,
similar to what it already does for account and container requests.
- |
Static Large Object sizes in listings for versioned containers are
now more accurate.
- |
When refetching Static Large Object manifests, non-manifest responses
are now handled better.
- |
S3 API now translates ``503 Service Unavailable`` responses to a more
S3-like response instead of raising an error.
- |
Improved proxy-to-backend requests to be more RFC-compliant.
- |
Various other minor bug fixes and improvements.