* Consider having the background writer update the transaction status
hint bits before writing out the page
Implementing this requires the background writer to have access to system
catalogs and the transaction status log.
<
< * Allow free-behind capability for large sequential scans to avoid
< kernel cache spoiling
<
< Posix_fadvise() can control both sequential/random file caching and
< free-behind behavior, but it is unclear how the setting affects other
< backends that also have the file open, and the feature is not supported
< on all operating systems.
useful and confuses people who think it is the same as -U. (Eventually
we might want to re-introduce it as being an alias for -U, but that should
not happen until the switch has actually not been there for a few releases.)
Likewise in pg_dump and pg_restore. Per gripe from Robert Treat and
subsequent discussion.
with the logged event. CSV logs are now a first-class citizen along plain
text logs in that they carry much of the same information.
Per complaint from depesz on bug #3799.
hazards. Instead teach these programs to prompt for a password when
necessary, just like all our other programs.
I did not bother to invent -W switches for them, since the return on
investment seems so low.
PQconnectionNeedsPassword function that tells the right thing for whether to
prompt for a password, and improve PQconnectionUsedPassword so that it checks
whether the password used by the connection was actually supplied as a
connection argument, instead of coming from environment or a password file.
Per bug report from Mark Cave-Ayland and subsequent discussion.
< o -Allow commenting of variables in postgresql.conf to restore them
< to defaults
< o -Add a GUC variable to control the tablespace for temporary objects
< and sort files
< Monitoring
< ==========
<
< * -Allow server log information to be output as CSV format
< * -Add ability to monitor the use of temporary sort files
< * -Allow user-defined types to accept 'typmod' parameters
<
< http://archives.postgresql.org/pgsql-hackers/2005-08/msg01142.php
< http://archives.postgresql.org/pgsql-hackers/2005-09/msg00012.php
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00149.php
<
< * -Add Globally/Universally Unique Identifier (GUID/UUID)
<
< http://archives.postgresql.org/pgsql-patches/2006-09/msg00209.php
< http://archives.postgresql.org/pgsql-general/2007-01/msg00853.php
<
< * -Support a data type with specific enumerated values (ENUM)
< o -Add support for arrays of complex types
< o -Make 64-bit version of the MONEY data type
< * -Add ISO day of week format 'ID' to to_char() where Monday = 1
< * -Add a field 'isoyear' to extract(), based on the ISO week
< * -Add RESET SESSION command to reset all session state
< o -Make CLUSTER preserve recently-dead tuples per MVCC requirements
< o -Add more logical syntax CLUSTER table USING index;
< support current syntax for backward compatibility
< o -Allow UPDATE/DELETE WHERE CURRENT OF cursor
< o -Add support for MOVE cursors
< o -Allow PL/PythonU to return boolean rather than 1/0
< o -Allow psql \pset boolean variables to set to fixed values, rather
< than toggle
< o -Add -f to pg_dumpall
< Dependency Checking
< ===================
<
< * -Flush cached query plans when the dependent objects change or
< when new ANALYZE statistics are available
< * -Track dependencies in function bodies and recompile/invalidate
< * -Invalidate prepared queries, like INSERT, when the table definition
< is altered
<
< * -Allow use of indexes to search for NULLs
< * -Allow the creation of indexes with mixed ascending/descending
< specifiers
< * -Reduce checkpoint performance degredation by forcing data to disk
< more evenly
< * -Allow sequential scans to take advantage of other concurrent
< sequential scans, also called "Synchronised Scanning"
< * -Consider shrinking expired tuples to just their headers
< * -Allow heap reuse of UPDATEd rows if no indexed columns are changed,
< and old and new versions are on the same heap page
< * -Reduce XID consumption of read-only queries
< o -Turn on by default
< o -Allow multiple vacuums so large tables do not starve small
< tables
< * -Allow the pg_xlog directory location to be specified during initdb
< with a symlink back to the /data location
< * -Allow buffered WAL writes and fsync
< * -Allow ORDER BY ... LIMIT # to select high/low value without sort or
< index using a sequential scan for highest/lowest values
< * -Merge xmin/xmax/cmin/cmax back into three header fields
< o -Support a smaller header for short variable-length fields
< * -Move NAMEDATALEN from postgres_ext.h to pg_config_manual.h
< * -Fix problem with excessive logging during SSL disconnection
<
< http://archives.postgresql.org/pgsql-bugs/2006-12/msg00122.php
< http://archives.postgresql.org/pgsql-bugs/2007-05/msg00065.php
<
< o -Add long file support for binary pg_dump output
