Restore GIN metapages unconditionally to avoid torn-page risk
(Heikki Linnakangas)
Although this oversight could theoretically result in a corrupted
index, it is unlikely to have caused any problems in practice, since
the active part of a GIN metapage is smaller than a standard 512-byte
disk sector.
Avoid race condition in checking transaction commit status during
receipt of a NOTIFY message (Marko Tiikkaja)
This prevents a scenario wherein a sufficiently fast client might
respond to a notification before database updates made by the
notifier have become visible to the recipient.
Allow regular-expression operators to be terminated early by query
cancel requests (Tom Lane)
This prevents scenarios wherein a pathological regular expression
could lock up a server process uninterruptably for a long time.
Remove incorrect code that tried to allow OVERLAPS with
single-element row arguments (Joshua Yanovski)
This code never worked correctly, and since the case is neither
specified by the SQL standard nor documented, it seemed better to
remove it than fix it.
Avoid getting more than AccessShareLock when de-parsing a
rule or view (Dean Rasheed)
This oversight resulted in pg_dump unexpectedly
acquiring RowExclusiveLock locks on tables mentioned as
the targets of INSERT/UPDATE/DELETE
commands in rules. While usually harmless, that could interfere with
concurrent transactions that tried to acquire, for example,
ShareLock on those tables.
Improve performance of index endpoint probes during planning (Tom Lane)
This change fixes a significant performance problem that occurred
when there were many not-yet-committed rows at the end of the index,
which is a common situation for indexes on sequentially-assigned
values such as timestamps or sequence-generated identifiers.
Fix test to see if hot standby connections can be allowed immediately
after a crash (Heikki Linnakangas)
Prevent interrupts while reporting non-ERROR messages
(Tom Lane)
This guards against rare server-process freezeups due to recursive
entry to syslog(), and perhaps other related problems.
Prevent intermittent "could not reserve shared memory region"
failures on recent Windows versions (MauMau)
Update time zone data files to tzdata release 2014a
for DST law changes in Fiji and Turkey, plus historical changes in
Israel and Ukraine.