path: root/ChangeLog

2007-09-14    <y-asaba@sraoss.co.jp>
	* Version 3.4.1
	* Fix handling failover when health_check was disabled. (Yoshiyuki)
	  - The bug was introduced in 3.4.
	* Fix deadlock while processing Parse message. (Yoshiyuki)

2007-08-01    <y-asaba@sraoss.co.jp>
	* Version 3.4
	* Add new "replicate_select" directive, being the default value to
	  be false. (Yoshiyuki) 
	  - If it is true, SELECT query is replicated. This behavior is
	    same as V3.2 or earlier.
	* Improve signal handling. (Yoshiyuki)
	  - Occasionaly, zombie processes were remained. Or processes were
	    unstable.
	* Fix hang up when SELECT was error inside a transaction
	  block. The bug was introduced in V3.3. (Yoshiyuki)
	* Fix PREPARE/EXECUTE handling in master slave mode. (Yoshiyuki)
	* Fix "kind mismatch error" when deadlock error 
	* Fix hang up and SEGV in extended query protocol when a warning
	  SQL like "SELECT '\'';" executed. (Yoshiyuki)
	* Fix memory leak when connection cache was full. (Yoshiyuki)

2007-05-18    <yamaguchi@sraoss.co.jp>
	* Version 3.3
	* Improve replication. SELECT nextval() and SELECT setval() are
	  now replicated. (Yoshiyuki)
	* Change SELECT query is only sent to the master node. (Yoshiyuki)
	  - Use /*REPLICATION*/ comment to repliate a SELECT query.
	* Fix unexpected failover error due to receiving an interrupt
	  signal while connecting to the backend. (Yoshiyuki)
	* Fix "ps" output to follow PostgreSQL's output. (Taiki)
	* Change the default value for enable_pool_hba to true. (Taiki)
	* Add "pgpool.pam" file, for PAM configuration file, to be
	  installed under "$PREFIX/share/". (Taiki)

2007-02-10    <ishii@sraoss.co.jp>
	* Version 3.2
	* Support HBA authentication(Taiki)
	* Support log_connections(Taiki)
	* Support log_hostname(Tatsuo)
	* Show pgpool status in ps command(Tatsuo)
	* Fix bug with prepared query(Yoshiyuki)
	* Detach secondary server when "kind mismatch error" is detected(Tatsuo)
        * Re-open socket if it was closed by backend while reusing
	  connection(Yoshiyuki)
	
2006-12-12    <y-asaba@sraoss.co.jp>
	* Version 3.1.2
	* Allow 0 weight(Tatsuo)
	* Return correct error messaes when pg_hba.conf auth fails. Patch
	  contributed by Kenji Kikuchi 
	* Fix kind mismatch errors with COPY FROM STDIN(Yoshiyuki)
	* Allow load balancing with extended protocol(Yoshiyuki)

2006-07-23    <ishii@sraoss.co.jp>
	* Version 3.1.1
	* Fix LISTEN/NOTIFY bug in master/slave mode reported by Michael
	  Ulitskiy (Tatsuo)
	
2006-07-01    <ishii@sraoss.co.jp>
	* Version 3.1
	* Improve documentation. patches contributed by Mark Stosberg
	* Fix "kind is 0!" error in Execute(). Reads messages until
	  receiving CommandComplete, EmptyQuery, ErrorResponse or
	  PortalSuspend in Execute() (Yoshiyuki)
	* Add log_statement option. patches contributed by Thomas E
	  Lackey, modifications and documents by Tatsuo
	* In SimpleForwardToFrontend() do not send SYNC and wait for ready for
	  query when PANIC or FATAL error occurs. In this case the backend
	  closes the communication channel immediately which will cause unwanted
	  failover/degeneration by, for example, trying to connect to
	  invalid database (Tatsuo)
	* Fix dealock problem in extended modd by calling synchronize() in
	  Execute if replication_strict is enabled (Yoshiyuki)
	* Fix segfault problem in race conditions among
	  connection_life_time, child_life_time and child_max_connections (Tatsuo)
	
2006-05-17    <ishii@sraoss.co.jp>
	* Version 3.0.2
	* pgpool does not exit even if pgpool.conf contents is wrong(Tatsuo)
	* Fix buffer overrun bug with long health_check_user name(Taiki)
	* Fix occasional segfault with replication and load balance
	  enabled(bug id #1000548)(Tatsuo)
	* Fix pool_send_error_message to send properly NULL terminated
	  string(Yoshiyuki)
	* Fix kind mismatch error in SimpleFowardFrontend(Yoshiyuki)
	* Enable to build with BSD make(Yoshiyuki)
	* Fix pool_debug and friends to block signals while
	  executing(Tatsuo)
	* Fix numerous bugs with extended query(Yoshiyuki)
	* Fix INSERT LOCK(Yoshiyuki)
	* Do not reuse startup packet(Tatsuo)
	* Automatically DEALLOCTE prepared queries when client
	  disconnects(Yoshiyuki)
	* Do not forward packets when length = 0 in
	  SimpleForwardToFrontend/SimpleForwardToBackend(Tatsuo)
	* Fix lost of kind info(Tatsuo)
	
2006-02-14    <ishii@sraoss.co.jp>
	* Version 3.0.1
	* Fix bugs with master/slave mode introduced in 2.7.2. per report
	  from David Boreham (Tatsuo)
	* Fix bugs with master/slave and prepared quries. per report
	  from David Boreham (Tatsuo)
	
2006-02-03    <devrim@commandprompt.com>
	* Version 3.0.0
	* Changed Copyright to PgPool Global Development Group
	* Fix a typo in man page

2006-02-02    <ishii@sraoss.co.jp>
	* version 2.7.2
	* PQnotifes() does not receive immediate responses from LISTEN
	* NOTIFY emits packet kind does not agree errors in master/slave
	  mode
	* add pgpool man pages(Peter Eisentra)

2006-01-16    <ishii@sraoss.co.jp>
	* version 2.7.1
	* Fix bug in show pool_status for ignore_leading_white_space
	
2006-01-03    <ishii@sraoss.co.jp>
	* version 2.7
	* add child_max_connections. contributed by Pomarede Nicolas with
	  minor changes by Tatsuo
	* add ignore_leading_white_space
	* fix problem with copy on V2 protocol
	* fix master/slave handling
	* fix extended query
	
2005-11-11    <ishii@sraoss.co.jp>
	* version 2.6.5
	* fix bug introduced in v2.6.4. V2 protocol/trust auth/first time
	  connection causes error on connection.
	* fix problem with DROP DATABASE. if pgpool has connected to the
	  database which is about to dropped, the command fails.
	
2005-10-22    <ishii@sraoss.co.jp>
	* version 2.6.4
	* fix connection error when client_min_message is verbose
	* resync pool_config.c with pool_config.l
	
2005-09-02    <t-ishii@sra.co.jp>
	* version 2.6.3
	* if invalid non-switch args are given (for example, pgpool -f
	  pgpool.conf foobar), pgpool silently deleted pgpool.pid even if
	  it's a valid one. Per report from Brad Nicholson.
	* fix show pool_status command bug. Sometimes secondary host is
	  showed "unused" even it is actually used.
	* fix bug in health_check(). It made wrong reports if secondary
	  goes down. Per report from Bunji Nagahasi.

2005-07-30    <t-ishii@sra.co.jp>
	* version 2.6.2
	* fix file descriptor leak bug
	
2005-07-18    <t-ishii@sra.co.jp>
	* version 2.6.1
	* set non blocking to sockets for frontend.
	* remove stdio usage from pool_write/pool_flush. Stdio libs have
	  fundanmental problems with non blocking sockets
	* do not raise failover when read() read encounters EOF. It seems it
	  is a oversight. Backend crush may cause that but it does not
	  immediately mean postmaster crush
	* retries with EINTR or EAGAIN in pool_stream modules

2005-06-25    <t-ishii@sra.co.jp>
	* version 2.6
	* fix memory leak in pool_error()
	* allow replication between servers which have different time zone
	  etc.
	* fix bug in pgpool -m f stop if pgpool stop has already issued
	  but pgpool cannot stop.
	* add new "insert_lock" directive which automatically insert table
	  locks to allow SERIAL data type replication
	* allow new "/*NO STRICT*/ comment to turn off the strict mode
	  temporary
	* add a row to pool_staus to display server status
	
2005-03-12    <t-ishii@sra.co.jp>
	* version 2.5.2
	* fix bug in health checking
	* strict mode is applied to non SELECT query only
	* add -D_GNU_SOURCE to CPP flag
	
2005-02-20    <t-ishii@sra.co.jp>
	* version 2.5.1
	* fix bug in heal checking
	  - sometimes health checking period drifts
	  - if health checking is intrrupted by SIGCHILD (this could
	    happen, for exmaple, if child_life_time expires), unwanted
	    failover happens
	* accept fast/immediate shutdown request while blocking in smart
	  shutdown
	* use asprintf to avoid log output confusion (thanks to Jacques Caron)
	* use sttok rather than strsep
	* emit log when starting up
	* make some logs from log level to debug level
	
2005-02-02    <t-ishii@sra.co.jp>
	* version 2.5
	* add health checking
	* add switch over
	* add following to pgpool.conf
	  - print_time_stamp
	  - master_slave_mode
	  - connection_cache
	  - health_check_timeout
	  - health_check_period
	  - health_check_user
	
2005-01-05    <t-ishii@sra.co.jp>
	* version 2.4
	* add reset_query_list so that SQL commands to be issued at the
	  end of sessions configurable
	* update copyright years
	
2004-12-14    <t-ishii@sra.co.jp>
	* version 2.3.3
	* make signal handling more portable
	* add health check when kind does match between master and secondary
	
2004-12-08    <t-ishii@sra.co.jp>
	* version 2.3.2
	* fix bug in degeneration when session is continued
	
2004-11-12    <t-ishii@sra.co.jp>
	* version 2.3.1
	* fix bug after degeneration
	* fix bug in child expires its life time
	* fix bug when envoked with -n and sent kill signal
	
2004-11-05    <t-ishii@sra.co.jp>
	* version 2.3
	* fix memory leak in handling startup packets
	* implement child_life_time
	* add -m option to pgpool stop mode to terminate pgpool in safe manner
	
2004-10-28    <t-ishii@sra.co.jp>
	* version 2.2.1
	* restart child process if one of them detects backend errors in
	  single/connection pool mode. This will avoid annoying errors in
	  case of postmaster restarting.
	* fix bug in setting select()'s timeout parameter
	* fix enbug in 2.2
	* fix mishandling select()'s timeout parameters in emitting ERROR
	  when select() fails
	* fix comments in pgpool.conf.sample
	
2004-09-30    <t-ishii@sra.co.jp>
	* version 2.2
	* fix unexpected block when master or secondary receives shutdown request
	* allow listen address and add new listen_address
	  directive. contributed by Peter Eisentraut
	
2004-09-13    <t-ishii@sra.co.jp>
	* version 2.1
	* new conf param weight_master and weight_secondary
	* use recent version of autoconf and automake
	
2004-09-02    <t-ishii@sra.co.jp>
	* version 2.0.9
	* use non block read() to be more reliable on heavy load
	* fix compilar warning on Solaris
	
2004-08-18    <t-ishii@sra.co.jp>
	* version 2.0.8
	* fix segfault when connection pool timer expires (Thanks matsuu!)
	
2004-08-13    <t-ishii@sra.co.jp>
	* version 2.0.7
	* fix compiler warning on PPC architecutre (thanks Peter!)
	* no need flex anymore while building pgpool
	  (workaround is fix configure by hand. this is due to
	  AM_PROG_LEX macro bug).
	* fix compiler warning and segfault on FreeBSD 5.2.1+AMD64 (thanks Martin!)
	* fix sigint handler in child
	
2004-07-22    <t-ishii@sra.co.jp>
	* version 2.0.6
	* workaorund with buggy 6.5's libpq
	* fix enbug in 2.0.5(pool_read -> pool_read2)
	
2004-07-19    <t-ishii@sra.co.jp>
	* version 2.0.5
	* do not check NULLMAP when no replication mode
	* fix lots of compiler warnings
	* change pool_read to pool_read2
	* consider the case NULLMAP is different among master and
	secondary in BinaryRow

2004-07-17    <t-ishii@sra.co.jp>
	* version 2.0.4
	* accept more connections than max_pool
	* consider the case NULLMAP is different among master and secondary
	
2004-07-12    <t-ishii@sra.co.jp>
	* version 2.0.3
	* fix segfault when connection is reused (enbug in 2.0.2)
	* fix wording in pgpool.conf.sample
	* fix flat file password authentication on V3 and relication is true
	
2004-07-04    <t-ishii@sra.co.jp>

	* version 2.0.2
	* enhance error handling when frontend or backend failed
	* change "log" -> "LOG" in pool_log()

2004-07-01    <t-ishii@sra.co.jp>

	* version 2.0.1
	* fix bug when backend_host_name is ''
	* relax message length check in SimpleForwardToFrontend so that it
	  allows rows order is physically different
	
2004-06-22    <t-ishii@sra.co.jp>

	* version 2.0
	* add load balancing capability
	* prevent unwanted degeneration (V1.2 behavior can be possible
	  using replication_stop_on_mismatch directive)
	
2004-05-16    <t-ishii@sra.co.jp>
	
	* version 1.2.3
	* fix bug in FunctionCall in replication mode
	
2004-05-11    <t-ishii@sra.co.jp>

	* version 1.2.2
	* fix slowness when client is connected to pgpool via TCP

2004-05-08    <t-ishii@sra.co.jp>

	* version 1.2.1
	* fix a bug when pool_read_string() reads large string
	* remove unnecessary pool_write_and_flush() from AsciiRow() and BinaryRow()

2004-05-06    <t-ishii@sra.co.jp>

	* version 1.2
	* fix a bug introduced by v1.1 which close listen fds accidently
	* prevent buffer overflow by checking password string length
	* do authentication even when connected by pooled connection
	* send an end packet("X") before closing a connection to backend

2004-04-28    <t-ishii@sra.co.jp>

	* version 1.1
	* fix segfault when connection pool timer is expired
	* support clear text password, crypt, md5 authentication method. note that in
	  repication mode, only clear text password authenticaton is supported.

2004-04-23    <t-ishii@sra.co.jp>

	* pgpool 1.0 released