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Major overhaul of large-object implementation, by Denis Perchine with

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kibitzing from Tom Lane.  Large objects are now all stored in a single
system relation "pg_largeobject" --- no more xinv or xinx files, no more
relkind 'l'.  This should offer substantial performance improvement for
large numbers of LOs, since there won't be directory bloat anymore.
It'll also fix problems like running out of locktable space when you
access thousands of LOs in one transaction.
Also clean up cruft in read/write routines.  LOs with "holes" in them
(never-written byte ranges) now work just like Unix files with holes do:
a hole reads as zeroes but doesn't occupy storage space.
INITDB forced!
This commit is contained in:
Tom Lane
2000-10-24 01:38:44 +00:00
parent d7186cfa9b
commit 4f44aa04b5
21 changed files with 735 additions and 1205 deletions
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5
doc/src/sgml/ref/psql-ref.sgml
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@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.39 2000/10/12 22:16:58 momjian Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.40 2000/10/24 01:38:21 tgl Exp $
Postgres documentation
-->
@ -706,7 +706,8 @@ lo_import 152801
<listitem>
<para>
Shows a list of all <productname>Postgres</productname> <quote>large
objects</quote> currently stored in the database along with their owners.
objects</quote> currently stored in the database, along with any
comments provided for them.
</para>
</listitem>
</varlistentry>