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+<!-- BEGIN page_title_block -->
+Weekly News - September 19 2010
+<!-- END page_title_block -->
+
+<h1>PostgreSQL Weekly News - September 19 2010</h1>
+
+<p>
+Barring catastrophe, PostgreSQL 9.0.0, now with, among many other new
+features, built-in replication, will be out Monday, September 20,
+2010. Rejoice!
+<a href="http://www.postgresql.org/">http://www.postgresql.org/</a>
+</p>
+
+<p>
+Early bird registration for JDCon West 2010 is now open.
+<a href="https://www.postgresqlconference.org/content/pgwest-2010-registration">https://www.postgresqlconference.org/content/pgwest-2010-registration</a>
+</p>
+
+<p>
+Surge 2010, the scalability and performance conference will be in
+Baltimore, MD, USA on September 30 - October 1st, 2010.
+<a href="http://omniti.com/surge/2010">http://omniti.com/surge/2010</a>
+</p>
+
+<h2>PostgreSQL Product News</h2>
+<p>
+Another PostgreSQL Diff Tool 2.0.2, a tool for database diffs, released.
+<a href="http://apgdiff.sourceforge.net/">http://apgdiff.sourceforge.net/</a>
+</p>
+
+<p>
+Benetl 3.6, an ETL tool for files using PostgreSQL, released.
+<a href="http://www.benetl.net">http://www.benetl.net</a>
+</p>
+
+<p>
+phpPgAdmin 5.0-beta1, a web-based administrative tool for PostgreSQL, released.
+<a href="http://phppgadmin.sourceforge.net/">http://phppgadmin.sourceforge.net/</a>
+</p>
+
+<h2>PostgreSQL Jobs for September</h2>
+<p>
+<a href="http://archives.postgresql.org/pgsql-jobs/2010-09/threads.php">http://archives.postgresql.org/pgsql-jobs/2010-09/threads.php</a>
+</p>
+
+<h2>PostgreSQL Local</h2>
+<p>
+Surge 2010, the scalability and performance conference will be in
+Baltimore, MD, USA on September 30 - October 1st, 2010.
+<a href="http://omniti.com/surge/2010">http://omniti.com/surge/2010</a>
+</p>
+
+<p>
+Call for Papers for PGDay.EU 2010 held on December 6-8 in Stuttgart,
+Germany is open.
+<a href="http://2010.pgday.eu/callforpapers">http://2010.pgday.eu/callforpapers</a>
+</p>
+
+<p>
+
+== PostgreSQL in the News ==
+</p>
+
+<p>
+Planet PostgreSQL: <a href="http://planet.postgresql.org/">http://planet.postgresql.org/</a>
+</p>
+
+<p>
+PostgreSQL Weekly News is brought to you this week by David Fetter
+</p>
+
+<p>
+Submit news and announcements by Sunday at 3:00pm Pacific time.
+</p>
+
+<h2>Reviews</h2>
+<p>
+- Abhijit Menon-Sen reviewed the "Our CLUSTER implementation is
+ pessimal" patch and found two chunks that did not apply cleanly,
+ along with some possible bit rot on copy_heap_data().
+</p>
+
+<p>
+- KaiGai Kohei reviewed Peter Eisentraut's patch to extend ALTER TYPE.
+</p>
+
+<p>
+- ITAGAKI Takahiro reviewed the SQL/MED(FDW) patch and found some
+ unused new types, a missing error check, a place to improve an error
+ message, and some places to improve consistency in type checks
+ between TABLE and FOREIGN TABLE.
+</p>
+
+<p>
+- Tom Lane reviewed Sushant Sinha's url-part extention for text
+ search.
+</p>
+
+<p>
+- Hitoshi Harada reviewed Pavel Stehule's WIP patch for median() and
+ percentile(), and found that it left out changes to contrib, had
+ some cosmetic coding style issues, has a possible new out-of-memory
+ condition due to the extra tuplesorts added, contained neither
+ documentation nor new regression tests, doesn't work in windowing
+ function context.
+== Applied Patches ==
+</p>
+
+<p>
+Heikki Linnakangas committed:
+</p>
+
+<p>
+- In pgsql/src/backend/utils/init/postinit.c, process options from the
+ startup packed in walsender. Only few options make sense for
+ walsender, but for example application_name and client_encoding do.
+ We still don't apply per-role settings from pg_db_role_setting,
+ because that would require connecting to a database to read the
+ table. Fujii Masao
+</p>
+
+<p>
+- In pgsql/src/include/replication/walreceiver.h, remove prototype for
+ non-existent function from walreceiver.h. Tidy up by separating
+ prototypes for functions in walreceiver.c and walreceiverfuncs.c
+ with comments.
+</p>
+
+<p>
+- In pgsql/src/backend/port/unix_latch.c, add a comment noting that
+ the owner_pid test in OwnLatch is just a sanity check, per request
+ by Jeff Davis.
+</p>
+
+<p>
+- In pgsql/src/bin/pg_ctl/pg_ctl.c, don't warn about an in-progress
+ online backup, when we're recovering from an online backup instead
+ of performing one. pg_ctl can detect that by checking if
+ recovery.conf exists. Backup label file is renamed away early in
+ recovery, so the window where backup label exists during recovery is
+ normally very small, but you can run into it e.g if restore_command
+ is set incorrectly and the startup process never finds even the
+ first WAL segment containing the checkpoint record to start recovery
+ from. Fujii Masao with comments by me.
+</p>
+
+<p>
+- In pgsql/src/backend/replication/walsender.c, oops, the timeout
+ argument to WaitLatchOrSocket is in microseconds, not milliseconds.
+</p>
+
+<p>
+- In pgsql/src/backend/replication/walsender.c, don't call OwnLatch
+ while holding a spinlock. OwnLatch can elog() under some "can't
+ happen" scenarios, and spinlocks should only be held for a few
+ instructions anyway. As pointed out by Fujii Masao.
+</p>
+
+<p>
+- Simplify Windows implementation of latches. There's no need to keep
+ a dynamic pool of event handles, we can permanently assign one for
+ each shared latch. Thanks to that, we no longer need a separate
+ shared memory block for latches, and we don't need to know in
+ advance how many shared latches there is, so you no longer need to
+ remember to update NumSharedLatches when you introduce a new latch
+ to the system.
+</p>
+
+<p>
+- Use a latch to make startup process wake up and replay immediately
+ when new WAL arrives via streaming replication. This reduces the
+ latency, and also allows us to use a longer polling interval, which
+ is good for energy efficiency. We still need to poll to check for
+ the appearance of a trigger file, but the interval is now 5 seconds
+ (instead of 100ms), like when waiting for a new WAL segment to
+ appear in WAL archive.
+</p>
+
+<p>
+- In pgsql/src/backend/access/transam/xlog.c, fix two typos in
+ comments, spotted by Fujii Masao and Thom Brown.
+</p>
+
+<p>
+Robert Haas committed:
+</p>
+
+<p>
+- In pgsql/doc/src/sgml/catalogs.sgml, elaborate on what gets stored
+ in pg_authid.rolpasswd. Also, add cross-reference from
+ pg_shadow.passwd to pg_authid.rolpasswd and fix a bit of markup I
+ muffed in my previous commit. Per discussion with Josh Kupershmidt.
+</p>
+
+<p>
+- In pgsql/src/backend/commands/comment.c, remove duplicated code left
+ behind by my recent refactoring of comment.c. These checks are also
+ present in objectaddress.c, so there's no need to recheck here.
+</p>
+
+<p>
+- In pgsql/doc/src/sgml/catalogs.sgml, move pg_db_role_setting docs to
+ correct place in alphabetical order.
+</p>
+
+<p>
+Tom Lane committed:
+</p>
+
+<p>
+- Fix join-removal logic for pseudoconstant and outerjoin-delayed
+ quals. In these cases a qual can get marked with the removable rel
+ in its required_relids, but this is just to schedule its evaluation
+ correctly, not because it really depends on the rel. We were
+ assuming that, in effect, we could throw away *all* quals so marked,
+ which is nonsense. Tighten up the logic to be a little more
+ paranoid about which quals belong to the outer join being considered
+ for removal, and arrange for all quals that don't belong to be
+ updated so they will still get evaluated correctly. Also fix
+ another problem that happened to be exposed by this test case, which
+ was that make_join_rel() was failing to notice some cases where a
+ constant-false qual could be used to prove a join relation empty.
+ If it's a pushed-down constant false, then the relation is empty
+ even if it's an outer join, because the qual applies after the outer
+ join expansion. Per report from Nathan Grange. Back-patch into
+ 9.0.
+</p>
+
+<p>
+- In pgsql/doc/src/sgml/release-9.0.sgml, add a compatibility note
+ about plpgsql's treatment of SELECT INTO rec.fld when fld is of
+ composite type. Per discussion of bug #5644 from Valentine
+ Gogichashvili.
+</p>
+
+<p>
+- Fix two new-in-9.0 bugs in hstore. There was an incorrect Assert in
+ hstoreValidOldFormat(), which would cause immediate core dumps when
+ attempting to work with pre-9.0 hstore data, but of course only in
+ an assert-enabled build. Also, ghstore_decompress() incorrectly
+ applied DatumGetHStoreP() to a datum that wasn't actually an hstore,
+ but rather a ghstore (ie, a gist signature bitstring). That used to
+ be harmless, but could now result in misbehavior if the hstore
+ format conversion code happened to trigger. In reality, since
+ ghstore is not marked toastable (and doesn't need to be), this
+ function is useless anyway; we can lobotomize it down to returning
+ the passed-in pointer. Both bugs found by Andrew Gierth, though
+ this isn't exactly his proposed patch.
+</p>
+
+<p>
+- In pgsql/doc/src/sgml/plpgsql.sgml, fix bad grammar.
+</p>
+
+<p>
+- Stamp 9.0 release notes with expected release date; also some
+ last-minute copy-editing.
+</p>
+
+<p>
+- In pgsql/src/backend/access/transam/README, add some documentation
+ about how we WAL-log filesystem actions. Per a question from Robert
+ Haas.
+</p>
+
+<p>
+- In pgsql/src/backend/parser/analyze.c, give a suitable HINT when an
+ INSERT's data source is a RowExpr containing the same number of
+ columns expected by the insert. This suggests that there were extra
+ parentheses that converted the intended column list into a row
+ expression. Original patch by Marko Tiikkaja, rather heavily
+ editorialized by me.
+</p>
+
+<p>
+- In pgsql/src/backend/commands/copy.c, make sure we wait for
+ protocol-level EOF when ending binary COPY IN. The previous coding
+ just terminated the COPY immediately after seeing the EOF marker (-1
+ where a row field count is expected). The expected CopyDone or
+ CopyFail message just got thrown away later, since we weren't in
+ COPY mode anymore. This behavior complicated matters for the JDBC
+ driver, and arguably was the wrong thing in any case since a
+ CopyFail message after the marker wouldn't be honored. Note that
+ there is a behavioral change here: extra data after the EOF marker
+ was silently ignored before, but now it will cause an error. Hence
+ not back-patching, although this is arguably a bug. Per report and
+ patch by Kris Jurka.
+</p>
+
+<p>
+- Fix several broken $PostgreSQL$ keywords. Noted while experimenting
+ with Magnus's script to remove these.
+</p>
+
+<p>
+- In pgsql/src/backend/utils/mb/Unicode/UCS_to_GB18030.pl, replace
+ last remaining $Id$ with $PostgreSQL$.
+</p>
+
+<p>
+Peter Eisentraut committed:
+</p>
+
+<p>
+- Translation updates for 9.0.0.
+</p>
+
+<p>
+Magnus Hagander committed:
+</p>
+
+<p>
+- In pgsql/src/backend/postmaster/postmaster.c, treat exit code 128
+ (ERROR_WAIT_NO_CHILDREN) as non-fatal on Win32, since it can happen
+ when a process fails to start when the system is under high load.
+ Per several bug reports and many peoples investigation. Back-patch
+ to 8.4, which is as far back as the "deadman-switch" for shared
+ memory access exists.
+</p>
+
+<p>
+Marc Fournier committed:
+</p>
+
+<p>
+- Tag v9.0.0 ... the big day approaches.
+</p>
+
+<p>
+Bruce Momjian committed:
+</p>
+
+<p>
+- In pgsql/src/backend/access/heap/README.HOT, update HOT README about
+ when single-page vacuums happen.
+</p>
+
+<h2>Rejected Patches (for now)</h2>
+<p>
+No one was disappointed this week :-)
+</p>
+
+<h2>Pending Patches</h2>
+<p>
+Teodor Sigaev sent in another revision of the patches to add
+K-Nearest-Neighbor support to GiST indexes.
+</p>
+
+<p>
+Heikki Linnakangas sent in two revisions of a patch using the new
+latch facility to reduce walreceiver latency.
+</p>
+
+<p>
+Hitoshi Harada sent in two revisions of a patch to allow top-level DML
+(INSERT, UPDATE, DELETE) in CTEs (WITH queries).
+</p>
+
+<p>
+KaiGai Kohei sent in another revision of the security label patch.
+</p>
+
+<p>
+Kevin Grittner sent in another revision of the patch to do
+serializable snapshot isolation.
+</p>
+
+<p>
+Bernd Helmle sent in another revision of the patch to fix a mismatch
+between ALTER TABLE ... ALTER COLUMN and table inheritance.
+</p>
+
+<p>
+Fujii Masao sent in two more revisions of the synchronous replication
+patch.
+</p>
+
+<p>
+ITAGAKI Takahiro sent in a patch, inspired by Joseph Adams's Google
+Summer of Code work, to add JSON. Joseph Adams sent in a patch based
+on it.
+</p>
+
+<p>
+SAKAMOTO Masahiko sent in three revisions of a patch to add FDW
+(foreign data wrapper) support, which is part of SQL/MED (Management
+of External Data).
+</p>
+
+<p>
+Peter Eisentraut sent in another WIP patch to implement per-column
+collation.
+</p>
+
+<p>
+Fujii Masao sent in a patch to adjust signal handling during recovery.
+</p>
+
+<p>
+Fujii Masao sent in two revisions of a patch to add a user-callable
+function to trigger failover in replication.
+</p>
+
+<p>
+Simon Riggs sent in a WIP patch which uses latches to adjust behavior
+of the startup process.
+</p>
+
+<p>
+Peter Eisentraut sent in another revision of the patch to extend ALTER
+TYPE for composite types.
+</p>
+
+<p>
+Fujii Masao sent in a patch to add a new function to libpq which is
+used to send an ACK back from walreceiver.
+</p>
+
+<p>
+Kevin Grittner sent in another revision of the patch to do
+serializable row locks.
+</p>
+
+<p>
+Robert Haas sent in a patch to add a pg_opfamily_is_visible()
+function.
+
+</p>
+
projects / pgweb-old.git / commitdiff