4.3.28, so there are no API changes, and applications may be upgraded
by relinking against db4-4.3.29. We stop pretending to support a
"java" package option since we never even bothered with handling the
PLIST differences. Changes from version 4.3.28 include:
* The on-disk log format has changed.
* Add support for lightweight, transactionally protected Sequence
Number generation.
* Add support for Degree 2 isolation.
* Add election generation information to replication to support Paxos
compliance.
* A huge number of bug fixes, including eliminating some instances of
application deadlock and memory leak fixes.
* Some minor performance enhancements.
Rewrote the typechecking code for Makefile variables. The variable
definitions are extracted from logical lines instead of physical lines,
comments are separated from actual values, for Lists of something, each
something is checked. All URLs are subject to MASTER_SITES expansion.
MASTER_SITES is checked to be a List of URLs.
Added CONFLICT to the list of deprecated variables (actually it's a
typo). Added PLIST_SUBST to makevars.map as a List. Allow comments after
a YES/yes/NO/no value of variables.
previous 8.0.x release, no dump-and-restore is necessary. Changes
from version 8.0.3 include:
postgresql80-client:
- Clarify comment for pgsql-hier-query option to note that it is
considered buggy by PostgreSQL developers.
* Make psql -f filename return a nonzero exit code when opening the
file fails
* Change pg_dump to handle inherited check constraints more reliably
postgresql80-server:
* Fix error that allowed "VACUUM" to remove ctid chains too soon, and
add more checking in code that follows ctid links
This fixes a long-standing problem that could cause crashes in very
rare circumstances.
* Fix CHAR() to properly pad spaces to the specified length when
using a multiple-byte character set (Yoshiyuki Asaba)
In prior releases, the padding of CHAR() was incorrect because it
only padded to the specified number of bytes without considering
how many characters were stored.
* Force a checkpoint before committing "CREATE DATABASE"
This should fix recent reports of "index is not a btree" failures
when a crash occurs shortly after "CREATE DATABASE".
* Fix the sense of the test for read-only transaction in "COPY"
The code formerly prohibited "COPY TO", where it should prohibit
"COPY FROM".
* Handle consecutive embedded newlines in "COPY" CSV-mode input
* Fix date_trunc(week) for dates near year end
* Fix planning problem with outer-join ON clauses that reference only
the inner-side relation
* Further fixes for x FULL JOIN y ON true corner cases
* Fix overenthusiastic optimization of x IN (SELECT DISTINCT ...) and
related cases
* Fix mis-planning of queries with small LIMIT values due to poorly
thought out "fuzzy" cost comparison
* Make array_in and array_recv more paranoid about validating their
OID parameter
* Fix missing rows in queries like UPDATE a=... WHERE a... with GiST
index on column a
* Improve robustness of datetime parsing
* Improve checking for partially-written WAL pages
* Improve robustness of signal handling when SSL is enabled
* Improve MIPS and M68K spinlock code
* Don't try to open more than max_files_per_process files during
postmaster startup
* Various memory leakage fixes
* Various portability improvements
* Update timezone data files
* Fix PL/PgSQL to handle var := var correctly when the variable is of
pass-by-reference type
postgresql80-plperl:
* Fix PL/Perl %_SHARED so it's actually shared
Changes:
* Pluggable object models.
* Problems with "gen-apply" on Win32 systems.
* Optimize "if true goto" into "goto".
* Peephole optimization on branches.
* Adjust ARM codegen macros to support branch elimination instructions.
* Redesign exception handling to use "setjmp" everywhere.
* Remove C++ code from "libjit.so" so that it is a pure C library.
* Use computed goto's in the interpreter if the compiler supports them.
* Don't allow conditional branches to jump out of exception contexts.
* Block movement to allow initialization code to be moved to the start
of a function, or loop condition code to be moved to the end.
* Rewrite the exception region routines to make them easier to use.
* Add the "gen-sel" program, for creating instruction selectors.
* Write instruction selectors for x86 and ARM (only x86 is enabled).
* Portability fixes for ARM, PPC, Alpha, IA64, and amd64.
* Clarify the description of LLVM, at the request of LLVM's author.
* Deferred argument popping after function calls.
* Add "--enable-interpreter" to force the interpreter to be used.
* Implement a simple global register allocator based on usage counts.
* Recognise increment and decrement idioms.
* Align cache flushes properly (Miroslaw Dobrzanski-Neumann).
* Querying of x86 cpuid where necessary.
* Add a constant pool for ARM, to make constant loads more efficient.
* Handle register pairs for 64-bit values properly.
* Support for parameter areas on the stack, to reduce push/pop overhead.
* Avoid unnecessary register spills if a value won't be used again.
* Implement tail calls from a function to itself.
* Optimize x86 prologs and epilogs to avoid doing unnecessry work.
* Centralise the code that handles parameter passing.
* Support for parallel builds.
