On Sun, Mar 2, 2014 at 2:38 PM, Tan Tran <tankimt...@gmail.com> wrote: > 2. Proposal > As a GSoC student, I will implement WAL recovery of hash indexes using the > other index types' WAL code as a guide. Roughly, I will: > - Devise a way to store and retrieve hashing data within the XLog data > structures. > - In the existing skeleton for hash_redo(XLogRecPtr lsn, XLogRecord *record) > in hash.c, branch to code for the various redo operations: creating an > index, inserting into an index, deleting an index, and page operations > (split, delete, update?). > - Code each branch by drawing on examples from btree_redo, gin_redo, and > gist_redo, the existing XLog code of the other index types.
Unfortunately, I don't believe that it's possible to do this easily today because of the way bucket splits are handled. I wrote about this previously here, with an idea for solving the problem: http://www.postgresql.org/message-id/ca+tgmozymojsrfxhxq06g8jhjxqcskvdihb_8z_7nc7hj7i...@mail.gmail.com Sadly, no one responded. :-( -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
