{BUG in streaming}

[Andrew Bennetts]

Martin Pool wrote:
> 2009/2/26 John Arbash Meinel <john at arbash-meinel.com>:
> > Using the latest bzr.dev locally and on my server, I'm getting an error
> > while trying to push a rich-root branch to an empty repository:

I can reproduce this by pushing -r100 of bzr-svn (using bzr.dev on both ends; I
haven't tried other versions).  Note that -r50 doesn't trigger it; I think it
may be caused by a non-lefthand revision with a parent of "null:" causing the
searcher in _walk_to_common_revisions to include "null:" in its list of keys.

> > $ bzr push $BZRB/../../plugins/svn/add_lines_cache
> > Connected (version 1.99, client OpenSSH_4.2)
> > Authentication (publickey) successful!
> > Secsh channel 1 opened.
> > bzr: ERROR: Revision {set([('null:',)])} not present in
> > "KnitVersionedFiles(_KnitGraphIndex(Combined
> > GraphIndex(GraphIndex('file:///C:/Users/jameinel/dev/bzr/plugins/DEACTIVATED/svn/.bzr/repository/ind
> > ices/c359a1a41c08eb98e616da765f13d85e.iix'),
> > GraphIndex('file:///C:/Users/jameinel/dev/bzr/plugins/D...
> >
> > Trimmed to make it more readable, but basically there is a search which
> > ends up looking for the NULL_KEY == (NULL_REVISION,), and then dies.
> 
> I'm also seeing this trying to push to Launchpad, and I can reproduce
> it with 1.12, and lp claims to be running 1.12.
> 
> I think this is https://bugs.edge.launchpad.net/bzr/+bug/317654

I've attached a one-line patch that filters out the "null:" in fetch.  Please
try it out and see if it fixes it for you.

-Andrew.

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