Don't crash with: UPDATE performance_schema.setup_instruments SET ENABLED="NO";

Don't log updates to performance schema in replication log.
Ensure that we don't call ha_update after ha_index_or_rnd_end() is called on slave.


.bzrignore:
  Ignore some generated files
mysql-test/include/show_slave_status.inc:
  Ensure that ./ is removed from file names
mysql-test/suite/perfschema/r/binlog_mix.result:
  Updated results
mysql-test/suite/perfschema/r/binlog_row.result:
  Updated results
mysql-test/suite/perfschema/r/binlog_stmt.result:
  Updated results
mysql-test/suite/rpl/r/rpl_cant_read_event_incident.result:
  Updated results
mysql-test/suite/rpl/r/rpl_performance_schema.result:
  Ensure that we don't crash slave when we update performance schema
mysql-test/suite/rpl/t/rpl_performance_schema.test:
  Ensure that we don't crash slave when we update performance schema
sql/log_event.cc:
  Ensure that we don't call ha_update after ha_index_or_rnd_end() is called.
  Remove old code that is not needed anymore (like restarting read loop over all rows if no matcing row is found)
  Simplify code
sql/log_event_old.cc:
  Ensure that we don't call ha_update after ha_index_or_rnd_end() is called.
storage/myisam/ha_myisam.cc:
  More DBUG_PRINT
storage/perfschema/ha_perfschema.h:
  Don't log updates to performance schema in replication log.

.bzrignore

@@ -1135,3 +1135,5 @@ plugin/handler_socket/perl-Net-HandlerSocket/Makefile.PL
 libmysqld/libmysqld_exports_file.cc
 libmysqld/gcalc_slicescan.cc
 libmysqld/gcalc_tools.cc
+sql/share/errmsg.sys
+sql/share/mysql

mysql-test/include/show_slave_status.inc

@@ -69,6 +69,7 @@ while ($_show_slave_status_items)
   --let $_show_slave_status_name= `SELECT SUBSTRING_INDEX('$_show_slave_status_items', ',', 1)`
   --let $_show_slave_status_items= `SELECT LTRIM(SUBSTRING('$_show_slave_status_items', LENGTH('$_show_slave_status_name') + 2))`
 
+  --replace_regex /\.[\\\/]master/master/
   --let $_show_slave_status_value= query_get_value(SHOW SLAVE STATUS, $_show_slave_status_name, 1)
   --let $_show_slave_status_value= `SELECT REPLACE("$_show_slave_status_value", '$MYSQL_TEST_DIR', 'MYSQL_TEST_DIR')`
   --echo $_show_slave_status_name = '$_show_slave_status_value'

mysql-test/suite/perfschema/r/binlog_mix.result

@@ -26,10 +26,6 @@ update performance_schema.setup_instruments set enabled='YES'
   and name not in ("wait/synch/rwlock/sql/CRYPTO_dynlock_value::lock");
 show binlog events from <binlog_start>;
 Log_name	Pos	Event_type	Server_id	End_log_pos	Info
-master-bin.000001	#	Query	#	#	BEGIN
-master-bin.000001	#	Table_map	#	#	table_id: # (performance_schema.setup_instruments)
-master-bin.000001	#	Update_rows	#	#	table_id: # flags: STMT_END_F
-master-bin.000001	#	Query	#	#	COMMIT
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE IF EXISTS `t1` /* generated by server */
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE IF EXISTS `t2` /* generated by server */
 master-bin.000001	#	Query	#	#	use `test`; create table test.t1 (thread_id integer)
@@ -44,7 +40,3 @@ master-bin.000001	#	Write_rows	#	#	table_id: # flags: STMT_END_F
 master-bin.000001	#	Query	#	#	COMMIT
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE `t1` /* generated by server */
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE `t2` /* generated by server */
-master-bin.000001	#	Query	#	#	BEGIN
-master-bin.000001	#	Table_map	#	#	table_id: # (performance_schema.setup_instruments)
-master-bin.000001	#	Update_rows	#	#	table_id: # flags: STMT_END_F
-master-bin.000001	#	Query	#	#	COMMIT

mysql-test/suite/perfschema/r/binlog_row.result

@@ -26,10 +26,6 @@ update performance_schema.setup_instruments set enabled='YES'
   and name not in ("wait/synch/rwlock/sql/CRYPTO_dynlock_value::lock");
 show binlog events from <binlog_start>;
 Log_name	Pos	Event_type	Server_id	End_log_pos	Info
-master-bin.000001	#	Query	#	#	BEGIN
-master-bin.000001	#	Table_map	#	#	table_id: # (performance_schema.setup_instruments)
-master-bin.000001	#	Update_rows	#	#	table_id: # flags: STMT_END_F
-master-bin.000001	#	Query	#	#	COMMIT
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE IF EXISTS `t1` /* generated by server */
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE IF EXISTS `t2` /* generated by server */
 master-bin.000001	#	Query	#	#	use `test`; create table test.t1 (thread_id integer)
@@ -44,7 +40,3 @@ master-bin.000001	#	Write_rows	#	#	table_id: # flags: STMT_END_F
 master-bin.000001	#	Query	#	#	COMMIT
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE `t1` /* generated by server */
 master-bin.000001	#	Query	#	#	use `test`; DROP TABLE `t2` /* generated by server */
-master-bin.000001	#	Query	#	#	BEGIN
-master-bin.000001	#	Table_map	#	#	table_id: # (performance_schema.setup_instruments)
-master-bin.000001	#	Update_rows	#	#	table_id: # flags: STMT_END_F
-master-bin.000001	#	Query	#	#	COMMIT

mysql-test/suite/perfschema/r/binlog_stmt.result

@@ -20,12 +20,14 @@ insert into test.t1
 select thread_id from performance_schema.events_waits_current;
 Warnings:
 Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. The statement is unsafe because it uses the general log, slow query log, or performance_schema table(s). This is unsafe because system tables may differ on slaves.
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Mixing self-logging and non-self-logging engines in a statement is unsafe.
 insert into test.t2
 select name from performance_schema.setup_instruments
 where name like "wait/synch/rwlock/sql/%"
     and name not in ("wait/synch/rwlock/sql/CRYPTO_dynlock_value::lock");
 Warnings:
 Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. The statement is unsafe because it uses the general log, slow query log, or performance_schema table(s). This is unsafe because system tables may differ on slaves.
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Mixing self-logging and non-self-logging engines in a statement is unsafe.
 drop table test.t1;
 drop table test.t2;
 update performance_schema.setup_instruments set enabled='YES'

mysql-test/suite/rpl/r/rpl_cant_read_event_incident.result

@@ -11,7 +11,7 @@ reset slave;
 start slave;
 include/wait_for_slave_param.inc [Last_IO_Errno]
 Last_IO_Errno = '1236'
-Last_IO_Error = 'Got fatal error 1236 from master when reading data from binary log: 'binlog truncated in the middle of event; consider out of disk space on master; the last event was read from './master-bin.000001' at 316, the last byte read was read from './master-bin.000001' at 335.''
+Last_IO_Error = 'Got fatal error 1236 from master when reading data from binary log: 'binlog truncated in the middle of event; consider out of disk space on master; the last event was read from 'master-bin.000001' at 316, the last byte read was read from 'master-bin.000001' at 335.''
 reset master;
 stop slave;
 reset slave;

mysql-test/suite/rpl/r/rpl_performance_schema.result

+include/master-slave.inc
+[connection master]
+UPDATE performance_schema.setup_instruments SET ENABLED="NO";
+include/rpl_end.inc

mysql-test/suite/rpl/t/rpl_performance_schema.test

+--source include/master-slave.inc
+--source include/have_perfschema.inc
+--source include/have_binlog_format_mixed.inc
+
+UPDATE performance_schema.setup_instruments SET ENABLED="NO";
+
+--sync_slave_with_master
+--source include/rpl_end.inc
+
+# End of test case

sql/log_event.cc

@@ -10127,7 +10127,11 @@ void issue_long_find_row_warning(Log_event_type type,
 
   @note If the engine allows random access of the records, a combination of
   @c position() and @c rnd_pos() will be used. 
- */
+
+  Note that one MUST call ha_index_or_rnd_end() after this function if
+  it returns 0 as we must leave the row position in the handler intact
+  for any following update/delete command.
+*/
 
 int Rows_log_event::find_row(const Relay_log_info *rli)
 {
@@ -10216,7 +10220,7 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
     {
       DBUG_PRINT("info",("ha_index_init returns error %d",error));
       table->file->print_error(error, MYF(0));
-      goto err;
+      goto end;
     }
 
     /* Fill key data for the row */
@@ -10251,7 +10255,7 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
         error= HA_ERR_KEY_NOT_FOUND;
       table->file->print_error(error, MYF(0));
       table->file->ha_index_end();
-      goto err;
+      goto end;
     }
 
   /*
@@ -10281,15 +10285,15 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
       /* Unique does not have non nullable part */
       if (!(table->key_info->flags & (HA_NULL_PART_KEY)))
       {
-        table->file->ha_index_end();
-        goto ok;
+        error= 0;
+        goto end;
       }
       else
       {
         KEY *keyinfo= table->key_info;
         /*
-          Unique has nullable part. We need to check if there is any field in the
-          BI image that is null and part of UNNI.
+          Unique has nullable part. We need to check if there is any
+          field in the BI image that is null and part of UNNI.
         */
         bool null_found= FALSE;
         for (uint i=0; i < keyinfo->key_parts && !null_found; i++)
@@ -10301,8 +10305,8 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
 
         if (!null_found)
         {
-          table->file->ha_index_end();
-          goto ok;
+          error= 0;
+          goto end;
         }
 
         /* else fall through to index scan */
@@ -10345,14 +10349,9 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
         DBUG_PRINT("info",("no record matching the given row found"));
         table->file->print_error(error, MYF(0));
         table->file->ha_index_end();
-        goto err;
+        goto end;
       }
     }
-
-    /*
-      Have to restart the scan to be able to fetch the next row.
-    */
-    table->file->ha_index_end();
   }
   else
   {
@@ -10360,14 +10359,12 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
     /* We use this to test that the correct key is used in test cases. */
     DBUG_EXECUTE_IF("slave_crash_if_table_scan", abort(););
 
-    int restart_count= 0; // Number of times scanning has restarted from top
-
     /* We don't have a key: search the table using rnd_next() */
     if ((error= table->file->ha_rnd_init_with_error(1)))
     {
       DBUG_PRINT("info",("error initializing table scan"
                          " (ha_rnd_init returns %d)",error));
-      goto err;
+      goto end;
     }
 
     is_table_scan= true;
@@ -10383,8 +10380,14 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
       switch (error) {
 
       case 0:
+        DBUG_DUMP("record found", table->record[0], table->s->reclength);
         break;
 
+      case HA_ERR_END_OF_FILE:
+        DBUG_PRINT("info", ("Record not found"));
+        table->file->ha_rnd_end();
+        goto end;
+
       /*
         If the record was deleted, we pick the next one without doing
         any comparisons.
@@ -10392,58 +10395,28 @@ int Rows_log_event::find_row(const Relay_log_info *rli)
       case HA_ERR_RECORD_DELETED:
         goto restart_rnd_next;
 
-      case HA_ERR_END_OF_FILE:
-        if (++restart_count < 2)
-        {
-          int error2;
-          if ((error2= table->file->ha_rnd_init_with_error(1)))
-          {
-            error= error2;
-            goto err;
-          }
-        }
-        break;
-
       default:
         DBUG_PRINT("info", ("Failed to get next record"
                             " (rnd_next returns %d)",error));
         table->file->print_error(error, MYF(0));
         table->file->ha_rnd_end();
-        goto err;
+        goto end;
       }
     }
-    while (restart_count < 2 && record_compare(table));
+    while (record_compare(table));
     
     /* 
       Note: above record_compare will take into accout all record fields 
       which might be incorrect in case a partial row was given in the event
      */
 
-    /*
-      Have to restart the scan to be able to fetch the next row.
-    */
-    if (restart_count == 2)
-      DBUG_PRINT("info", ("Record not found"));
-    else
-      DBUG_DUMP("record found", table->record[0], table->s->reclength);
-    table->file->ha_rnd_end();
-
     DBUG_ASSERT(error == HA_ERR_END_OF_FILE || error == 0);
-    goto err;
   }
-ok:
-  if (is_table_scan || is_index_scan)
-    issue_long_find_row_warning(get_type_code(), m_table->alias.c_ptr(), 
-                                is_index_scan, rli);
-
-  table->default_column_bitmaps();
-  DBUG_RETURN(0);
 
-err:
+end:
   if (is_table_scan || is_index_scan)
     issue_long_find_row_warning(get_type_code(), m_table->alias.c_ptr(), 
                                 is_index_scan, rli);
-
   table->default_column_bitmaps();
   DBUG_RETURN(error);
 }
@@ -10516,6 +10489,7 @@ int Delete_rows_log_event::do_exec_row(const Relay_log_info *const rli)
       Delete the record found, located in record[0]
     */
     error= m_table->file->ha_delete_row(m_table->record[0]);
+    m_table->file->ha_index_or_rnd_end();
   }
   return error;
 }
@@ -10658,7 +10632,7 @@ Update_rows_log_event::do_exec_row(const Relay_log_info *const rli)
   m_curr_row= m_curr_row_end;
   /* this also updates m_curr_row_end */
   if ((error= unpack_current_row(rli)))
-    return error;
+    goto err;
 
   /*
     Now we have the right row to update.  The old row (the one we're
@@ -10678,6 +10652,8 @@ Update_rows_log_event::do_exec_row(const Relay_log_info *const rli)
   if (error == HA_ERR_RECORD_IS_THE_SAME)
     error= 0;
 
+err:
+  m_table->file->ha_index_or_rnd_end();
   return error;
 }
 

sql/log_event_old.cc

@@ -2218,7 +2218,11 @@ Old_rows_log_event::write_row(const Relay_log_info *const rli,
 
   @note If the engine allows random access of the records, a combination of
   @c position() and @c rnd_pos() will be used. 
- */
+
+  Note that one MUST call ha_index_or_rnd_end() after this function if
+  it returns 0 as we must leave the row position in the handler intact
+  for any following update/delete command.
+*/
 
 int Old_rows_log_event::find_row(const Relay_log_info *rli)
 {
@@ -2361,15 +2365,14 @@ int Old_rows_log_event::find_row(const Relay_log_info *rli)
       /* Unique does not have non nullable part */
       if (!(table->key_info->flags & (HA_NULL_PART_KEY)))
       {
-        table->file->ha_index_end();
         DBUG_RETURN(0);
       }
       else
       {
         KEY *keyinfo= table->key_info;
         /*
-          Unique has nullable part. We need to check if there is any field in the
-          BI image that is null and part of UNNI.
+          Unique has nullable part. We need to check if there is any
+          field in the BI image that is null and part of UNNI.
         */
         bool null_found= FALSE;
         for (uint i=0; i < keyinfo->key_parts && !null_found; i++)
@@ -2381,7 +2384,6 @@ int Old_rows_log_event::find_row(const Relay_log_info *rli)
 
         if (!null_found)
         {
-          table->file->ha_index_end();
           DBUG_RETURN(0);
         }
 
@@ -2424,11 +2426,6 @@ int Old_rows_log_event::find_row(const Relay_log_info *rli)
         DBUG_RETURN(error);
       }
     }
-
-    /*
-      Have to restart the scan to be able to fetch the next row.
-    */
-    table->file->ha_index_end();
   }
   else
   {
@@ -2462,8 +2459,10 @@ int Old_rows_log_event::find_row(const Relay_log_info *rli)
         if (++restart_count < 2)
         {
           int error2;
+          table->file->ha_rnd_end();
           if ((error2= table->file->ha_rnd_init_with_error(1)))
             DBUG_RETURN(error2);
+          goto restart_rnd_next;
         }
         break;
 
@@ -2489,7 +2488,8 @@ int Old_rows_log_event::find_row(const Relay_log_info *rli)
       DBUG_PRINT("info", ("Record not found"));
     else
       DBUG_DUMP("record found", table->record[0], table->s->reclength);
-    table->file->ha_rnd_end();
+    if (error)
+      table->file->ha_rnd_end();
 
     DBUG_ASSERT(error == HA_ERR_END_OF_FILE || error == 0);
     DBUG_RETURN(error);
@@ -2738,6 +2738,7 @@ int Delete_rows_log_event_old::do_exec_row(const Relay_log_info *const rli)
       Delete the record found, located in record[0]
     */
     error= m_table->file->ha_delete_row(m_table->record[0]);
+    m_table->file->ha_index_or_rnd_end();
   }
   return error;
 }
@@ -2874,6 +2875,8 @@ Update_rows_log_event_old::do_exec_row(const Relay_log_info *const rli)
 #endif
 
   error= m_table->file->ha_update_row(m_table->record[1], m_table->record[0]);
+  m_table->file->ha_index_or_rnd_end();
+
   if (error == HA_ERR_RECORD_IS_THE_SAME)
     error= 0;
 

storage/myisam/ha_myisam.cc

@@ -1672,18 +1672,26 @@ int ha_myisam::index_init(uint idx, bool sorted)
 
 int ha_myisam::index_end()
 {
+  DBUG_ENTER("ha_myisam::index_end");
   active_index=MAX_KEY;
   //pushed_idx_cond_keyno= MAX_KEY;
   mi_set_index_cond_func(file, NULL, 0);
   in_range_check_pushed_down= FALSE;
   ds_mrr.dsmrr_close();
-  return 0; 
+#if !defined(DBUG_OFF) && defined(SQL_SELECT_FIXED_FOR_UPDATE)
+  file->update&= ~HA_STATE_AKTIV;               // Forget active row
+#endif
+  DBUG_RETURN(0);
 }
 
 int ha_myisam::rnd_end()
 {
+  DBUG_ENTER("ha_myisam::rnd_end");
   ds_mrr.dsmrr_close();
-  return 0;
+#if !defined(DBUG_OFF) && defined(SQL_SELECT_FIXED_FOR_UPDATE)
+  file->update&= ~HA_STATE_AKTIV;               // Forget active row
+#endif
+  DBUG_RETURN(0);
 }
 
 int ha_myisam::index_read_map(uchar *buf, const uchar *key,
@@ -1785,6 +1793,7 @@ void ha_myisam::position(const uchar *record)
 {
   my_off_t row_position= mi_position(file);
   my_store_ptr(ref, ref_length, row_position);
+  file->update|= HA_STATE_AKTIV;               // Row can be updated
 }
 
 int ha_myisam::info(uint flag)

storage/perfschema/ha_perfschema.h

@@ -70,9 +70,13 @@ public:
       Without HA_FAST_KEY_READ, the optimizer reads all columns and never
       calls ::rnd_pos(), so it is guaranteed to return only thread <n>
       records.
+      We use HA_HAS_OWN_BINLOGGING to stop changes to this table to
+      be logged to slaves (as enabled performance tracking on all slaves
+      is probably not what anyone wants)
     */
-    return HA_NO_TRANSACTIONS | HA_REC_NOT_IN_SEQ | HA_NO_AUTO_INCREMENT |
-      HA_BINLOG_ROW_CAPABLE | HA_BINLOG_STMT_CAPABLE | HA_NO_BLOBS;
+    return (HA_NO_TRANSACTIONS | HA_REC_NOT_IN_SEQ | HA_NO_AUTO_INCREMENT |
+            HA_BINLOG_ROW_CAPABLE | HA_BINLOG_STMT_CAPABLE |
+            HA_HAS_OWN_BINLOGGING | HA_NO_BLOBS);
   }
 
   /**