- Scheduler is either initialized at server start or never.
  Starting & stopping is now suspending & resuming.
- The scheduler has clear OO interface
- Now all calls to the scheduler are synchronous
- GLOBAL event_scheduler uses thd::sys_var_tmp (see set_var.cc)
- External API is encapsulated into class Events
- Includes fixes for all comments of Kostja's review of 19.05.2005

Starting to merge into 5.1-release (5.1.10) and push


BitKeeper/etc/ignore:
  Added libmysqld/event_scheduler.cc to the ignore list
libmysqld/Makefile.am:
  executor -> scheduler
mysql-test/r/events.result:
  update result
mysql-test/r/events_bugs.result:
  update result
mysql-test/r/events_logs_tests.result:
  update result
mysql-test/r/events_microsec.result:
  update result
mysql-test/r/events_scheduling.result:
  update result
mysql-test/r/events_stress.result:
  update result
mysql-test/t/disabled.def:
  enable these tests
mysql-test/t/events.test:
  optimize the test a bit for speed, save some seconds runtime
  remove FULL from SHOW EVENTS
  mostly use I_S.EVENTS
mysql-test/t/events_bugs.test:
  Skip irrelevant for the current design tests - all events are loaded
  on server startup. Change in mysql.event will be visible on next server start.
  Don't use numeric error codes.
mysql-test/t/events_logs_tests.test:
  optimize the test a bit for speed
mysql-test/t/events_microsec.test:
   Skip irrelevant for the current design tests - all events are loaded
      on server startup. Change in mysql.event will be visible on next server start.
      Don't use numeric error codes.
mysql-test/t/events_scheduling.test:
  broader test
mysql-test/t/events_stress.test:
  Rework the test to the new architecture of suspending/resuming.
  Use less events, no need for thousands, hundreds is still ok.
sql/Makefile.am:
  executor -> scheduler
sql/cmakelists.txt:
  executor -> scheduler
sql/event.cc:
  - remove todo comments
  - remove unneded evex_queue abstraction functions
  - move events_init() and events_shutdown() from event_executor.cc to here
  - export db_create_event
  - remove evex_load_and_compile_event, part of class Event_scheduler
  - integrate the public interface found in event.h and used by sql_parse.cc
    to use the new class Event_scheduler.
sql/event.h:
  - add COND_finished so if one thread kills a running event it waits on this
  - export callback event_timed_definer_equal, event_timed_identifier_equal(),
    event_timed_name_equal and event_timed_db_equal()
    to be used by Event_scheduler::drop_matching_events()
  - cleanup event.h
  - encapsulated all external interface into class Events
sql/event_executor.cc:
  make it empty, will delete after that
sql/event_priv.h:
  - more things in the private header
  - remove event queue abstraction functions. tightly bind to QUEUE
  - export privately db_drop_event, db_find_event, db_create_event()
  - made change_security_context() and restore_security_context() free functions
sql/event_timed.cc:
  - fix calculation of time when ENDS is set (STARTS is always set)
  - during Event_timed::compile() set the right Security_ctx. Prevents a crash
        during Event_scheduler::load_events_from_db()
  - add Event_timed::kill_thread()
  - implement event_timed_*_equal()
  - made change_security_context() and restore_security_context() free functions.
  - Comments cleanups
sql/lex.h:
  new word scheduler for SHOW SCHEDULER STATUS (available only debug builds)
sql/log.cc:
  move these from event_scheduler.cc
sql/mysql_priv.h:
  refactor kill_one_thread
  export sql_print_message_func and sql_print_message_handlers
sql/mysqld.cc:
  In close_connections, called by kill_server() skip the main scheduler
  thread and use events_shutdown() for shutting down the scheduler, in the same
  manner it's done for RPL.
  Add a new value to --event-scheduler :
  0 <- No scheduler available
  1 <- Start with scheduler enabled
  2 <- Start with scheduler suspended
sql/repl_failsafe.cc:
  refactor thd::system_thread to be an enum
sql/set_var.cc:
  move sys_var_event_executor::update() to set_var.cc
  executor -> scheduler
  use thd::sys_var_tmp
sql/set_var.h:
  executor -> scheduler
sql/share/errmsg.txt:
  3 new error messages
sql/sql_class.cc:
  refactor thd::system_thread to be an enum . more type-safety
sql/sql_class.h:
  refactor thd::system_thread to be an enum . more type-safety
sql/sql_db.cc:
  get the error from evex_drop_schema_events
sql/sql_error.h:
  export warning_level_names
sql/sql_lex.h:
  new command SHOW SCHEDULER STATUS, available only in debug build and
  for debug purposes.
sql/sql_parse.cc:
  refactor kill_one_thread() -> does the *dirty* work, and sql_kill
  just the reporting.
  add handler for SQLCOM_SHOW_SCHEDULER_STATUS
sql/sql_show.cc:
  fix verbosity handling (this will be obsoleted anyway by the fix for 17394).
sql/sql_yacc.yy:
  remove FULL from SHOW EVENTS
  add SHOW SCHEDULER STATUS in debug builds
sql/table.cc:
  Fix valgrind warning.

  Removed Berkeley DB
configure.in:
  Adjusted Netware support
basic.t.c:
  Change for Netware
Makefile.am:
  Use thread safe libmysqlclient_r if it was built
valgrind.supp:
  Hide report about strlen/_dl_init_paths
ha_tina.cc:
  Temporarely disable CSV engine on Netware,
  as the engine depends on mmap()
net_serv.cc:
  Include <sys/select.h> for Netware


sql/net_serv.cc:
  Include <sys/select.h> for Netware
storage/csv/ha_tina.cc:
  Temporarely disable CSV engine on Netware,
  as the engine depends on mmap()
mysql-test/valgrind.supp:
  Hide report about strlen/_dl_init_paths
tests/Makefile.am:
  Use thread safe libmysqlclient_r if it was built
unittest/mytap/t/basic.t.c:
  Change for Netware
configure.in:
  Adjusted Netware support
support-files/mysql.spec.sh:
  Removed Berkeley DB

into  zippy.(none):/home/cmiller/work/mysql/mysql-5.1-release

client/mysql.cc:
  No longer use the length of data to infer whether it is null.

 - memset Connection.sessionID_ in Connection contructor
 - From upstream yaSSL


extra/yassl/src/yassl_imp.cpp:
  Set sessionID_ of Connection to zero when Connection constructor

storage/ndb/src/ndbapi/DictCache.cpp:
  changed dbug printout

Bug#16445 ndb, removed workaround in test to see if rewrite of dict cache has worked to remove this bug

  Added suppressions for Red Hat AS 4


mysql-test/valgrind.supp:
  Added suppressions for Red Hat AS 4

config/ac-macros/ha_ndbcluster.m4:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/log.cc:
  SCCS merged
sql/sql_base.cc:
  SCCS merged

into  mysql.com:/home/bk/b17400-mysql-5.1-new


sql/log_event.cc:
  Auto merged

Fixing bug where UPDATE failed on slave and some cleanup of ndb_unpack_record().


mysql-test/r/rpl_bit_npk.result:
  Result change
mysql-test/t/disabled.def:
  Disabling tests
mysql-test/t/rpl_bit_npk.test:
  Making test storage-engine independent
mysql-test/t/rpl_ndb_innodb2ndb-slave.opt:
  Storage engine name change
mysql-test/t/rpl_ndb_myisam2ndb-slave.opt:
  Storage engine name change
sql/ha_ndbcluster.cc:
  Using move_field_offset() to move field pointer.
  Using my_ptrdiff_t instead of uint for pointer difference.
  Removing ineffective cast.
  Calling member function directly, bypassing the virtual mechanism
  for Field_bit.
sql/log_event.cc:
  Starting and stopping range scan and index read inside find_and_fetch row
  instead of in calling function. There are storage engines that require the
  search to be restarted for every changed row.

unittest/examples/no_plan.t.c:
  Ensure that the "configure" result is used when compiling this module.
unittest/examples/skip_all.t.c:
  Ensure that the configure result is used when compiling this module.
unittest/examples/todo.t.c:
  Ensure that the configure result is used when compiling this module.
unittest/mytap/t/basic.t.c:
  Ensure that the configure result is used when compiling this module.

+ removed extra (not needed) discovery done at online create/drop index

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.1-new-ndb

into  mysql.com:/home/bk/fix-mysql-5.1-new

test rpl_err_ignoredtables.


sql/log_event.cc:
  Clearing tables to lock list in the event of errors.
  Adding asserts to catch failing to clear the list of tables to lock.
  Releasing allocated memory if the table will not be replicated.
sql/rpl_rli.h:
  Adding assert to ensure post-condition of clear_tables_to_lock().
  Minor rewrites.

libmysqld/Makefile.am:
  Another undetected typo ...

libmysqld/Makefile.am:
  Silly typo: Lacking a trailing semicolon after shell "if".

shell "for" loops without values to loop over cause syntax errors.


libmysqld/Makefile.am:
  Workaround:  The variable "$sqlstoragesources" expands to empty, this causes shell errors.
  The clean solution would be to check the reason for this, whether it will be permanent etc,
  but for a quick fix it is sufficient to prevent shell syntax errors.

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.1-new-ndb

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.1-new-ndb

into  mysql.com:/home/marty/MySQL/mysql-5.1-new


sql/ha_ndbcluster.cc:
  Auto merged

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new


storage/ndb/src/kernel/blocks/dbtc/Dbtc.hpp:
  Auto merged
storage/ndb/src/kernel/blocks/dbtc/DbtcMain.cpp:
  Auto merged

into  mysql.com:/home/mydev/mysql-5.1-bug10405


storage/myisam/mi_check.c:
  Auto merged

- ndb system tables not created because of filter, moved chack of filter

into  mysql.com:/home/my/mysql-5.1


mysql-test/mysql-test-run.pl:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged

(Fixes core dump in rpl_failed_optimize.test)
Ensure we end active transcations if we do an admin command (like optimize, repair etc)


mysql-test/extra/rpl_tests/rpl_failed_optimize.test:
  Added extra test + drop of table at end of test
mysql-test/lib/mtr_report.pl:
  Fail if mysqld asserts or prints stack
mysql-test/mysql-test-run.sh:
  Fail if mysqld asserts or prints stack
mysql-test/r/exampledb.result:
  Cleanup of events_tests (as this caused a lot of problems if it didn't work)
mysql-test/r/innodb.result:
  Extra test to see that we can do an optimize table on an active transaction
mysql-test/r/rpl_failed_optimize.result:
  Added extra test + drop of table at end of test
mysql-test/t/exampledb.test:
  Cleanup of events_tests (as this caused a lot of problems if it didn't work)
mysql-test/t/innodb.test:
  Extra test to see that we can do an optimize table on an active transaction
sql/handler.cc:
  Don't use row level logging on optimize or repair table.
sql/log.cc:
  Simplify code (no logic changes)
sql/mysql_priv.h:
  Added prototype
sql/sql_base.cc:
  Better name for define
sql/sql_class.cc:
  Indentation fix
sql/sql_parse.cc:
  Make end_active_trans() global
sql/sql_table.cc:
  Ensure we end active transcations if we do an admin command (like optimize, repair etc)

into  mysql.com:/home/ndbdev/jmiller/clones/mysql-5.1-new

    fixed memleak in ndbcluster_end


mysql-test/mysql-test-run.pl:
  do not install ndb slave if no slaves
sql/ha_ndbcluster.cc:
  fixed memleak in ndbcluster_end

Bug #18798: mysqld cores on update in ha_ndbcluster call if cluster has failed before, added extra check that transaction is started

into  mysql.com:/home/my/mysql-5.1


sql/ha_ndbcluster.cc:
  Auto merged
mysql-test/t/disabled.def:
  Manual merge

into  mysql.com:/home/mydev/mysql-5.1-bug10405