Fixed that automatic killing of delayed insert thread (in flush, alter table etc) will not abort auto-repair of MyISAM table.

Give more information when finding an error in a MyISAM table.
When killing system thread, use KILL_SYSTEM_THREAD instead of KILL_CONNECTION to make it easier to ignore the signal in sensitive context (like auto-repair)
Added new kill level: KILL_SERVER that will in the future to be used to signal killed by shutdown.
Add more warnings about killed connections when warning level > 3

include/myisamchk.h:
  Added counting of printed info/notes
mysys/mf_iocache.c:
  Remove duplicate assignment
sql/handler.cc:
  Added test of KILL_SERVER
sql/log.cc:
  Ignore new 'kill' error ER_NEW_ABORTING_CONNECTION when requesting query error code.
sql/mysqld.cc:
  Add more warnings for killed connections when warning level > 3
sql/scheduler.cc:
  Added checks for new kill signals
sql/slave.cc:
  Ignore new kill signal ER_NEW_ABORTING_CONNECTION
sql/sp_head.cc:
  Fixed assignment to bool
  Added testing of new kill signals
sql/sql_base.cc:
  Use KILL_SYSTEM_THREAD to auto-kill system threads
sql/sql_class.cc:
  Add more warnings for killed connections when warning level > 3
  thd_killed() now ignores KILL_BAD_DATA and THD::KILL_SYSTEM_THREAD as these should not abort sensitive operations.
sql/sql_class.h:
  Added KILL_SYSTEM_THREAD and KILL_SERVER
sql/sql_connect.cc:
  Added handling of KILL_SERVER
sql/sql_insert.cc:
  Use KILL_SYSTEM_THREAD to auto-kill system threads
  Added handling of KILL_SERVER
sql/sql_parse.cc:
  Add more warnings for killed connections when warning level > 3
  Added checking that thd->abort_on_warning is reset at end of query.
sql/sql_show.cc:
  Update condition for when a query is 'killed'
storage/myisam/ha_myisam.cc:
  Added counting of info/notes printed
storage/myisam/mi_check.c:
  Always print an an error if we find data errors when checking/repairing a MyISAM table.
  When a repair was killed, don't retry repair.
  Added assert if sort_get_next_record() returned an error without an error message.
  Removed nonsence check "if (sort_param->read_cache.error < 0)" in repair.
storage/myisam/myisamchk.c:
  Added counting of notes printed
storage/pbxt/src/thread_xt.cc:
  Better error message.

1 files changed, 13 insertions, 1 deletions

diff --git a/sql/sql_class.cc b/sql/sql_class.cc
index 0b6a3ebf85e..41e59489429 100644
--- a/sql/sql_class.cc
+++ b/sql/sql_class.cc
@@ -1254,6 +1254,15 @@ void THD::awake(THD::killed_state state_to_set)
   THD_CHECK_SENTRY(this);
   safe_mutex_assert_owner(&LOCK_thd_data);
 
+  if (global_system_variables.log_warnings > 3)
+  {
+    Security_context *sctx= security_ctx;
+    sql_print_warning(ER(ER_NEW_ABORTING_CONNECTION),
+                      thread_id,(db ? db : "unconnected"),
+                      sctx->user ? sctx->user : "unauthenticated",
+                      sctx->host_or_ip,
+                      "KILLED");
+  }
   killed= state_to_set;
   if (state_to_set != THD::KILL_QUERY)
   {
@@ -3280,7 +3289,10 @@ void THD::restore_backup_open_tables_state(Open_tables_state *backup)
 */
 extern "C" int thd_killed(const MYSQL_THD thd)
 {
-  return(thd->killed);
+  if (thd->killed == THD::NOT_KILLED || thd->killed == THD::KILL_BAD_DATA ||
+      thd->killed == THD::KILL_SYSTEM_THREAD)
+    return 0;
+  return thd->killed;
 }
 
 /**