[PATCH 00/13]: Incremental index fixes

[ebiederm@xmission.com (Eric W. Biederman)]

Eric,

Recently I noticed some weird indexing on one of my mailboxes.  So I dug
in and made the index_sync tests more robust and found several corner
cases where the current code can be problematic.  What follows are the
test cases and fixes for those cases.

The big one is when a message with the highest message number is
deleted.  This can cause message numbers to be reassigned so I
explicitly track the highest message number assigned.

Very confusing when reading mail there is a case in SearchIdx
that has been assigning message numbers in the wrong order.  Depending
on your time range that can be very confusing as old messages show up
before newer ones.

Finally in v2 deleted messages have not been being deleted from the
msgmap.  Which while great for keeping message numbers from going
backwards it means things still show up that shouldn't.

Eric W. Biederman (13):
      Import.pm: Don't assume {in} and {out} always exist
      t/v1reindex.t: Isolate the test cases
      t/v2reindex.t: Isolate the test cases more
      t/v[12]reindex.t: Place expected second in Xapian tests
      t/v[12]reindex.t: Test that the resulting msgmap is as expected
      t/v[12]reindex.t: Test incremental indexing works
      SearchIdx.pm: Always assign numbers backwards during incremental indexing
      Msgmap.pm: Track the largest value of num ever assigned
      t/v[12]reindex.t Verify num_highwater
      t/v[12]reindex.t: Verify the num highwater is as expected
      SearchIdx,V2Writeable: Update num_highwater on optimized deletes
      V2Writeable.pm: Ensure that a found message number is in the msgmap
      V2Writeable.pm: In unindex_oid delete the message from msgmap

 lib/PublicInbox/Import.pm     |   1 +
 lib/PublicInbox/Msgmap.pm     |  23 ++-
 lib/PublicInbox/SearchIdx.pm  |  30 ++--
 lib/PublicInbox/V2Writable.pm |  20 ++-
 t/v1reindex.t                 | 359 ++++++++++++++++++++++++++++++++++++------
 t/v2reindex.t                 | 335 +++++++++++++++++++++++++++++++++++----
 6 files changed, 666 insertions(+), 102 deletions(-)


Eric