Release date: 2010-12-16
This release contains a variety of fixes from 8.1.22. For information about new features in the 8.1 major release, see Section E.246.
This is expected to be the last PostgreSQL release in the 8.1.X series. Users are encouraged to update to a newer release branch soon.
A dump/restore is not required for those running 8.1.X. However, if you are upgrading from a version earlier than 8.1.18, see Section E.228.
Force the default
wal_sync_method to be
fdatasync on Linux (Tom Lane, Marti Raudsepp)
The default on Linux has actually been
fdatasync for many years, but recent kernel
changes caused PostgreSQL to
open_datasync instead. This
choice did not result in any performance improvement, and caused
outright failures on certain filesystems, notably
ext4 with the
data=journal mount option.
Fix recovery from base backup when the starting checkpoint WAL record is not in the same WAL segment as its redo point (Jeff Davis)
Add support for detecting register-stack overrun on
IA64 (Tom Lane)
IA64 architecture has two
hardware stacks. Full prevention of stack-overrun failures requires
Add a check for stack overflow in
copyObject() (Tom Lane)
Certain code paths could crash due to stack overflow given a sufficiently complex query.
Fix detection of page splits in temporary GiST indexes (Heikki Linnakangas)
It is possible to have a “concurrent” page split in a temporary index, if for example there is an open cursor scanning the index when an insertion is done. GiST failed to detect this case and hence could deliver wrong results when execution of the cursor continued.
Avoid memory leakage while
ANALYZE'ing complex index expressions (Tom
Ensure an index that uses a whole-row Var still depends on its table (Tom Lane)
An index declared like
create index i on t
(foo(t.*)) would not automatically get dropped when its
table was dropped.
Do not “inline” a SQL function with multiple
OUT parameters (Tom Lane)
This avoids a possible crash due to loss of information about the expected result rowtype.
Fix constant-folding of
expressions (Tom Lane)
The planner would sometimes attempt to evaluate sub-expressions that in fact could never be reached, possibly leading to unexpected errors.
Add print functionality for
InhRelation nodes (Tom Lane)
This avoids a failure when
debug_print_parse is enabled and certain types of
query are executed.
Fix incorrect calculation of distance from a point to a horizontal line segment (Tom Lane)
This bug affected several different geometric distance-measurement operators.
Fix PL/pgSQL's handling of “simple” expressions to not fail in recursion or error-recovery cases (Tom Lane)
Fix bug in
picksplit algorithm (Alexander Korotkov)
This could result in considerable inefficiency, though not
actually incorrect answers, in a GiST index on a
cube column. If you have such an index, consider
REINDEXing it after installing this
Don't emit “identifier
will be truncated” notices in
contrib/dblink except when creating new
connections (Itagaki Takahiro)
Fix potential coredump on missing public key in
contrib/pgcrypto (Marti Raudsepp)
Fix memory leak in
XPath query functions (Tom Lane)
Update time zone data files to tzdata release 2010o for DST law changes in Fiji and Samoa; also historical corrections for Hong Kong.
If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.