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2.1, 2.2 and 2.3, and can read and write repositories generated by all
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Dropping Python2.4 and Python2.5 support
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****************************************
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Bazaar 2.4.0 is the first version of bzr to drop support for python
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versions before 2.6. The 2.3 series will still be maintained in bugfix
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mode for people who need older versions of python. You can also use
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Launchpad to nominate fixes for 2.3. We can't fix everything, but that can
26
help guide us to what people are running into. Upgrading to python2.6
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allows us to clean up the syntax in our files, and makes it easier to work
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on python3 compatibility.
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********************
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External merge tool configuration has been added to ``bzr`` core. The name
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and commandline of one or more external merge tools can be defined in
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35
bazaar.conf. See the help topic ``configuration`` for more details.
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Tagged Revisions are Copied
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Tagged revisions are copied
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***************************
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When tags are copied from a branch, the associated revisions are now copied
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revisions from tags will always be present, so that operations like ``bzr
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log -r tag:foo`` will always work.
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Deprecated command synonyms
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***************************
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Two built-in synonyms for ``bzr branch`` have been deprecated: ``clone`` and
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Configuration files
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*******************
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65
format. Refer to ``bzr help changelog_merge`` for documentation on how to
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enable it and what it can do.
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Faster operations on Large Trees
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********************************
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Many bzr commands used to run into pathological behavior on large trees
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(>10k files), reading the inventory data in random order causing cache
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thrashing (the fix was backported to bzr-2.3.2). We also updated several
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code paths that were updating the WT state using an O(tree) operation to
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one that was an O(changes) operation. A possibly incomplete list is as
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follows for running commands on a 70k file tree::
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bzr-2.3.1 bzr-2.3.2 bzr-2.4 action
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3m39s 1m08s 1m03s bzr co --lightweight
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38s 8s 2s bzr revert (in a clean tree)
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4m47s 3m56s 15s bzr merge
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9m33s 21s 19s bzr uncommit (including a merge)
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4m44s 17s 2s bzr uncommit (simple commit)
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This is a smaller table of times for the Launchpad tree (~8k items)::
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bzr-2.3.1 bzr-2.4 action
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5.3s 5.2s bzr co --lightweight
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3.9s 3.7s bzr uncommit (with merge)
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0.9s 0.3s bzr uncommit (without merge)
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Faster stacked branches
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***********************
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Creating a stacked branch from a smart server with ``bzr branch
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--stacked`` is a bit faster now. For small branches it does 20% fewer
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network roundtrips. Other operations where a local branch is stacked on a
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branch hosted on a smart server will also benefit.
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Further information
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*******************
added
removed
doc/en/whats-new/whats-new-in-2.4.txt
