On Fri, Dec 4, 2015 at 9:47 PM, Ildus Kurbangaliev <i.kurbangal...@postgrespro.ru> wrote: > Attached patch adds support of partial decompression for datums. > It will be useful in many cases when extracting part of data is > enough for big varlena structures. > > It is especially useful for expanded datums, because it provides > storage for partial results. > > I have another patch, which removes the 1 Mb limit on tsvector using > this feature.
-1 for changing the shape of pglz_decompress directly and particularly use metadata in it. The current format of those routines is close to what lz4 offers in terms of compression and decompression of a string, let's not break that we had a time hard enough in 9.5 cycle to get something clean. By the way, why don't you compress the multiple chunks and store the related metadata at a higher level? There is no need to put that in pglz itself. -- Michael -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
