Encountered while debugging somwthing else for the package importer.
The first thing that comes to mind is that I was using a bzr branch where the extensions weren't compiled (revno 6451 with branch lp:~vila/bzr/924746-http-fileobj
Running 'iimport-package --no-push --keep-temp --local-branches phpbb3' with it should reproduce the issue.
The following traceback hints that it's related to repacking which is probably not as well tested for the pure python version:
Traceback (most recent call last):
File "/h3t1/vila-tests/pkgimport/scripts/bin/import-package", line 7, in <module>
main()
File "/h3t1/vila-tests/pkgimport/scripts/udd/scripts/import_package.py", line 1177, in main
only_before=options.only_before))
File "/h3t1/vila-tests/pkgimport/scripts/udd/scripts/import_package.py", line 1078, in _import_package
bstore, push, possible_transports=possible_transports)
File "/h3t1/vila-tests/pkgimport/scripts/udd/scripts/import_package.py", line 638, in import_package
use_time_from_changelog=True)
File "/home/vila/.bazaar/plugins/builddeb/import_dsc.py", line 1243, in import_package
pull_debian=pull_debian)
File "/home/vila/.bazaar/plugins/builddeb/import_dsc.py", line 1146, in _import_normal_package
file_ids_from=file_ids_from)
File "/home/vila/.bazaar/plugins/builddeb/import_dsc.py", line 874, in import_upstream
exclude=exclude)
File "/home/vila/.bazaar/plugins/builddeb/upstream/pristinetar.py", line 234, in import_component_tarball
revid = builder.commit(message)
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/vf_repository.py", line 211, in commit
self.repository.commit_write_group()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repository.py", line 633, in commit_write_group
result = self._commit_write_group()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 1727, in _commit_write_group
hint = self._pack_collection._commit_write_group()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 1629, in _commit_write_group
result = self.autopack()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 888, in autopack
return self._do_autopack()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 928, in _do_autopack
reload_func=self._restart_autopack)
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 947, in _execute_pack_operations
result = packer.pack()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 716, in pack
return self._create_pack_from_packs()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/groupcompress_repo.py", line 509, in _create_pack_from_packs
self.new_pack.finish()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 488, in finish
self._write_index('text', self.text_index, 'file texts', suspend)
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/repofmt/pack_repo.py", line 545, in _write_index
index_tempfile = index.finish()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/btree_index.py", line 449, in finish
return self._write_nodes(self.iter_all_entries())[0]
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/btree_index.py", line 398, in _write_nodes
self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/btree_index.py", line 333, in _add_key
rows[-1].finish_node()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/btree_index.py", line 75, in finish_node
byte_lines, _, padding = self.writer.finish()
File "/home/vila/src/bzr/bugs/924746-http-fileobj/bzrlib/chunk_writer.py", line 144, in finish
% (self.bytes_out_len, self.chunk_size))
AssertionError: Somehow we ended up with too much compressed data, 4108 > 4096
