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create_index.sgml

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    • Tom Lane's avatar
      ff301d6e
      Implement "fastupdate" support for GIN indexes, in which we try to accumulate · ff301d6e
      Tom Lane authored
      multiple index entries in a holding area before adding them to the main index
      structure.  This helps because bulk insert is (usually) significantly faster
      than retail insert for GIN.
      
      This patch also removes GIN support for amgettuple-style index scans.  The
      API defined for amgettuple is difficult to support with fastupdate, and
      the previously committed partial-match feature didn't really work with
      it either.  We might eventually figure a way to put back amgettuple
      support, but it won't happen for 8.4.
      
      catversion bumped because of change in GIN's pg_am entry, and because
      the format of GIN indexes changed on-disk (there's a metapage now,
      and possibly a pending list).
      
      Teodor Sigaev
      ff301d6e
      History
      Implement "fastupdate" support for GIN indexes, in which we try to accumulate
      Tom Lane authored
      multiple index entries in a holding area before adding them to the main index
      structure.  This helps because bulk insert is (usually) significantly faster
      than retail insert for GIN.
      
      This patch also removes GIN support for amgettuple-style index scans.  The
      API defined for amgettuple is difficult to support with fastupdate, and
      the previously committed partial-match feature didn't really work with
      it either.  We might eventually figure a way to put back amgettuple
      support, but it won't happen for 8.4.
      
      catversion bumped because of change in GIN's pg_am entry, and because
      the format of GIN indexes changed on-disk (there's a metapage now,
      and possibly a pending list).
      
      Teodor Sigaev
    create_index.sgml 21.75 KiB