The previous coding failed in various scenarios possibly including vpath
builds and doing make install without preceding make all.

This allows us to see what mode the server is in before it starts to
perform actions that can block or hang. Otherwise server messages
may not appear until after messages that say FATAL the database
server is starting up.

corrupted. This error, however, does is not a compilation problem but a runtime
one, so we can keep compiling but still have to declare ERROR.

Windows, thanks to a feature in CRT called Parameter Validation.

Backpatch to 8.2, which is the oldest version supported on Windows. In
8.2 and 8.3 also backpatch the earlier change to use DEVNULL instead of
NULL_DEV #define for a /dev/null-like device. NULL_DEV was hard-coded to
"/dev/null" regardless of platform, which didn't work on Windows, while
DEVNULL works on all platforms. Restarting syslogger didn't work on
Windows on versions 8.3 and below because of that.

Use a file of patterns of filenames to exclude from pgindent runs, instead if using multiple invocations of egrep. Add perl ppport.h to the current list.

Zoltan beautified his hidden-variable-patch for ecpg. This also makes sure we get an error message instead of a warning if the variable have different types.

Applied Zoltan's patch to make ecpg spit out warnings if a local variable hides a global one with the same name.

Takahiro Itagaki

The error message now makes explicit reference to the GUC that must be changed
to fix the problem, using wording suggested by Tom Lane.  Along the way,
rename the GUC from MaxWalSenders to max_wal_senders for consistency and
grep-ability.

more appropriate place for exclusion constraints.

Original patch by Fujii Masao, with heavy editing and bitrot-fixing
after my other commit.

"replication" are quoted in pg_hba.conf, they lose their special meaning.

loop in standby mode, trying to restore from archive, pg_xlog and
streaming.

Move sections around to make the high availability chapter more
coherent: the most prominent part is now a "Log-Shipping Standby Servers"
section that describes what a standby server is (like the old
"Warm Standby Servers for High Availability" section), and how to
set up a warm standby server, including streaming replication, using the
built-in standby mode. The pg_standby method is desribed in another
section called "Alternative method for log shipping", with the added
caveat that it doesn't work with streaming replication.

default values, with example comments.

constraint exclusion on an inheritance set that is the target of an UPDATE
or DELETE query.  Per gripe from Marc Cousin.  Back-patch to 8.4 where
the feature was introduced.

pg_xlog directory. This is essential for replaying WAL records that
were streamed from the master, after a standby server restart.

If a corrupt record is seen in a file restored from the archive or
streamed from the master, log it as a WARNING and keep retrying. If the
corruption is permanent, and not just a glitch in the whatever copies the
files to the archive or a network error not caught by CRC checks in TCP
for example, we will keep retrying and logging the WARNING indefinitely.
But that's better than shutting down completely, the standby is still
useful for running read-only queries. In PITR the recovery ends at such a
corrupt record, which is a bit questionable, but that's the behavior we
had in previous releases and we don't feel like chaning it now. It does
make sense for tools like pg_standby.

btree_xlog_delete_get_latestRemovedXid().  This variable was only tested
in assert builds.

It is no longer installed by default, but included in "make world"/"make
install-world".  Documentation updated accordingly.

Also, fix vpathsearch function to work when calling make install-docs
without previous make docs.

requested by Andrew Lardinois

Similar information already appears in the PL/Perl and PL/Tcl chapters.

suggested by Steve White (bug #5272)

example to 'on or 'off' rather than 'true' or 'false', as shown
in docs. Add restartpoint_command. Add section header for recovery
target parameters, matching docs.

fixes things so that it works for cases where nested removals are possible.
The overhead of the optimization should be significantly less, as well.

WAL record for btree delete contains a list of tids, even when backup
blocks are present. We follow the tids to their heap tuples, taking
care to follow LP_REDIRECT tuples. We ignore LP_DEAD tuples on the
understanding that they will always have xmin/xmax earlier than any
LP_NORMAL tuples referred to by killed index tuples. Iff all tuples
are LP_DEAD we return InvalidTransactionId. The heap relfilenode is
added to the WAL record, requiring API changes to pass down the heap
Relation. XLOG_PAGE_MAGIC updated.

not delayed until the first WAL record is sent.

Fujii Masao

unsatisfiable query, such as indexcol && empty_array.  It should return -1
to tell GIN no scan is required; but silly typo disabled the logic for that,
resulting in unnecessary "GIN indexes do not support whole-index scans" error.
Per bug report from Jeff Trout.

Back-patch to 8.3 where the logic was introduced.

by a superuser -- "ALTER USER f RESET setting" already disallows removing such a
setting.

Apply the same treatment to ALTER DATABASE d RESET ALL when run by a database
owner that's not superuser.

and alter a comment to reduce confusion.

called replication. Add host and port details, following format
of messages in BackendInitialize().