Обсуждение: pgsql-server/ oc/src/sgml/ref/reindex.sgml rc/ ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@svr1.postgresql.org    03/09/29 20:40:26

Modified files:
    doc/src/sgml/ref: reindex.sgml
    src/backend/access/nbtree: nbtpage.c nbtree.c nbtsort.c
                               nbtxlog.c
    src/include/access: nbtree.h

Log message:
    Adjust btree index build procedure so that the btree metapage looks
    invalid (has the wrong magic number) until the build is entirely
    complete.  This turns out to cost no additional writes in the normal
    case, since we were rewriting the metapage at the end of the process
    anyway.  In normal scenarios there's no real gain in security, because
    a failed index build would roll back the transaction leaving an unused
    index file, but for rebuilding shared system indexes this seems to add
    some useful protection.