remove @@system_versioning_innodb_algorithm_simple

and delete few garbage-in-garbage-out tests

mysql-test/r/mysqld--help,win.rdiff

@@ -38,14 +38,14 @@
   --sort-buffer-size=# 
   Each thread that needs to do a sort allocates a buffer of
 @@ -1190,6 +1197,7 @@ The following options may be given as the first argument:
-  EMPTY_STRING_IS_NULL
+  EMPTY_STRING_IS_NULL, SIMULTANEOUS_ASSIGNMENT
   --stack-trace       Print a symbolic stack trace on failure
   (Defaults to on; use --skip-stack-trace to disable.)
 + --standalone        Dummy option to start as a standalone program (NT).
   --standard-compliant-cte 
   Allow only CTEs compliant to SQL standard
   (Defaults to on; use --skip-standard-compliant-cte to disable.)
-@@ -1261,6 +1269,11 @@ The following options may be given as the first argument:
+@@ -1257,6 +1265,11 @@ The following options may be given as the first argument:
   --thread-pool-max-threads=# 
   Maximum allowed number of worker threads in the thread
   pool
@@ -57,7 +57,7 @@
   --thread-pool-oversubscribe=# 
   How many additional active worker threads in a group are
   allowed.
-@@ -1299,8 +1312,8 @@ The following options may be given as the first argument:
+@@ -1295,8 +1308,8 @@ The following options may be given as the first argument:
   automatically convert it to an on-disk MyISAM or Aria
   table.
   -t, --tmpdir=name   Path for temporary files. Several paths may be specified,
@@ -68,23 +68,23 @@
   --transaction-alloc-block-size=# 
   Allocation block size for transactions to be stored in
   binary log
-@@ -1434,7 +1447,6 @@ key-cache-block-size 1024
+@@ -1430,7 +1443,6 @@ key-cache-block-size 1024
  key-cache-division-limit 100
  key-cache-file-hash-size 512
  key-cache-segments 0
 -large-pages FALSE
  lc-messages en_US
  lc-messages-dir MYSQL_SHAREDIR/
  lc-time-names en_US
-@@ -1506,6 +1518,7 @@ myisam-sort-buffer-size 134216704
+@@ -1502,6 +1514,7 @@ myisam-sort-buffer-size 134216704
  myisam-stats-method NULLS_UNEQUAL
  myisam-use-mmap FALSE
  mysql56-temporal-format TRUE
 +named-pipe FALSE
  net-buffer-length 16384
  net-read-timeout 30
  net-retry-count 10
-@@ -1616,6 +1629,8 @@ session-track-schema TRUE
+@@ -1612,6 +1625,8 @@ session-track-schema TRUE
  session-track-state-change FALSE
  session-track-system-variables autocommit,character_set_client,character_set_connection,character_set_results,time_zone
  session-track-transaction-info OFF
@@ -93,18 +93,18 @@
  show-slave-auth-info FALSE
  silent-startup FALSE
  skip-grant-tables TRUE
-@@ -1642,6 +1657,7 @@ slave-transaction-retry-interval 0
+@@ -1638,6 +1653,7 @@ slave-transaction-retry-interval 0
  slave-type-conversions 
  slow-launch-time 2
  slow-query-log FALSE
 +slow-start-timeout 15000
  sort-buffer-size 2097152
  sql-mode STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
  stack-trace TRUE
-@@ -1657,9 +1673,9 @@ sync-relay-log-info 10000
+@@ -1652,9 +1668,9 @@ sync-relay-log 10000
+ sync-relay-log-info 10000
  sysdate-is-now FALSE
  system-versioning-alter-history ERROR
- system-versioning-innodb-algorithm-simple TRUE
 -table-cache 431
 +table-cache 2000
  table-definition-cache 400
@@ -113,7 +113,7 @@
  table-open-cache-instances 8
  tc-heuristic-recover OFF
  tcp-keepalive-interval 0
-@@ -1668,6 +1684,8 @@ tcp-keepalive-time 0
+@@ -1663,6 +1679,8 @@ tcp-keepalive-time 0
  thread-cache-size 151
  thread-pool-idle-timeout 60
  thread-pool-max-threads 65536

mysql-test/r/mysqld--help.result

@@ -1223,10 +1223,6 @@ The following options may be given as the first argument:
  Versioning ALTER TABLE mode. ERROR: Fail ALTER with
  error; KEEP: Keep historical system rows and subject them
  to ALTER; 
- --system-versioning-innodb-algorithm-simple 
- Use simple algorithm of timestamp handling in InnoDB
- instead of TRX_SEES
- (Defaults to on; use --skip-system-versioning-innodb-algorithm-simple to disable.)
  --table-cache=#     Deprecated; use --table-open-cache instead.
  --table-definition-cache=# 
  The number of cached table definitions
@@ -1656,7 +1652,6 @@ sync-relay-log 10000
 sync-relay-log-info 10000
 sysdate-is-now FALSE
 system-versioning-alter-history ERROR
-system-versioning-innodb-algorithm-simple TRUE
 table-cache 431
 table-definition-cache 400
 table-open-cache 431

mysql-test/suite/sys_vars/r/sysvars_server_embedded.result

@@ -4086,20 +4086,6 @@ NUMERIC_BLOCK_SIZE	NULL
 ENUM_VALUE_LIST	DEFAULT
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	NULL
-VARIABLE_NAME	SYSTEM_VERSIONING_INNODB_ALGORITHM_SIMPLE
-SESSION_VALUE	ON
-GLOBAL_VALUE	ON
-GLOBAL_VALUE_ORIGIN	COMPILE-TIME
-DEFAULT_VALUE	ON
-VARIABLE_SCOPE	SESSION
-VARIABLE_TYPE	BOOLEAN
-VARIABLE_COMMENT	Use simple algorithm of timestamp handling in InnoDB instead of TRX_SEES
-NUMERIC_MIN_VALUE	NULL
-NUMERIC_MAX_VALUE	NULL
-NUMERIC_BLOCK_SIZE	NULL
-ENUM_VALUE_LIST	OFF,ON
-READ_ONLY	NO
-COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	TABLE_DEFINITION_CACHE
 SESSION_VALUE	NULL
 GLOBAL_VALUE	400

mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result

@@ -5038,20 +5038,6 @@ NUMERIC_BLOCK_SIZE	NULL
 ENUM_VALUE_LIST	DEFAULT
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	NULL
-VARIABLE_NAME	SYSTEM_VERSIONING_INNODB_ALGORITHM_SIMPLE
-SESSION_VALUE	ON
-GLOBAL_VALUE	ON
-GLOBAL_VALUE_ORIGIN	COMPILE-TIME
-DEFAULT_VALUE	ON
-VARIABLE_SCOPE	SESSION
-VARIABLE_TYPE	BOOLEAN
-VARIABLE_COMMENT	Use simple algorithm of timestamp handling in InnoDB instead of TRX_SEES
-NUMERIC_MIN_VALUE	NULL
-NUMERIC_MAX_VALUE	NULL
-NUMERIC_BLOCK_SIZE	NULL
-ENUM_VALUE_LIST	OFF,ON
-READ_ONLY	NO
-COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	TABLE_DEFINITION_CACHE
 SESSION_VALUE	NULL
 GLOBAL_VALUE	400

mysql-test/suite/versioning/r/select.result

@@ -330,25 +330,14 @@ trx_start_good
 select x from t1 for system_time as of timestamp @ts;
 x
 1
-select x from t1 for system_time as of timestamp unix_timestamp(@ts);
-x
-1
-select x from t1 for system_time as of timestamp @trx_start;
-x
 set @ts= timestamp'1-1-1 0:0:0';
 ## TRANSACTION specifier
-select x from t1 for system_time as of transaction @ts;
-x
-select x from t1 for system_time as of transaction unix_timestamp(@ts);
-x
 select x from t1 for system_time as of transaction @trx_start;
 x
 1
 ## no specifier (auto-detection)
 select x from t1 for system_time as of @ts;
 x
-select x from t1 for system_time as of unix_timestamp(@ts);
-x
 select x from t1 for system_time as of @trx_start;
 x
 1

mysql-test/suite/versioning/r/trx_id.result

@@ -103,32 +103,6 @@ select @trx_id1 < @trx_id2, @trx_id2 < @trx_id3;
 select @ts1 < @ts2, @ts2 < @ts3;
 @ts1 < @ts2	@ts2 < @ts3
 1	1
-# MVCC is not resolved
-select * from t1 for system_time as of transaction @trx_id1;
-x
-1
-select * from t1 for system_time as of timestamp @ts1;
-x
-3
-select * from t1 for system_time as of transaction @trx_id2;
-x
-1
-2
-select * from t1 for system_time as of timestamp @ts2;
-x
-2
-3
-select * from t1 for system_time as of transaction @trx_id3;
-x
-1
-2
-3
-select * from t1 for system_time as of timestamp @ts3;
-x
-1
-2
-3
-set system_versioning_innodb_algorithm_simple= off;
 # MVCC is resolved
 select * from t1 for system_time as of transaction @trx_id1;
 x

mysql-test/suite/versioning/t/select.test

@@ -216,19 +216,14 @@ select @trx_start < unix_timestamp(@ts) - 100 as trx_start_good;
 
 --echo ## TIMESTAMP specifier
 select x from t1 for system_time as of timestamp @ts;
-select x from t1 for system_time as of timestamp unix_timestamp(@ts);
-select x from t1 for system_time as of timestamp @trx_start;
 
 set @ts= timestamp'1-1-1 0:0:0';
 
 --echo ## TRANSACTION specifier
-select x from t1 for system_time as of transaction @ts;
-select x from t1 for system_time as of transaction unix_timestamp(@ts);
 select x from t1 for system_time as of transaction @trx_start;
 
 --echo ## no specifier (auto-detection)
 select x from t1 for system_time as of @ts;
-select x from t1 for system_time as of unix_timestamp(@ts);
 select x from t1 for system_time as of @trx_start;
 
 

mysql-test/suite/versioning/t/trx_id.test

@@ -108,15 +108,6 @@ select sys_start from t1 where x = 3 into @trx_id3;
 select @trx_id1 < @trx_id2, @trx_id2 < @trx_id3;
 select @ts1 < @ts2, @ts2 < @ts3;
 
---echo # MVCC is not resolved
-select * from t1 for system_time as of transaction @trx_id1;
-select * from t1 for system_time as of timestamp @ts1;
-select * from t1 for system_time as of transaction @trx_id2;
-select * from t1 for system_time as of timestamp @ts2;
-select * from t1 for system_time as of transaction @trx_id3;
-select * from t1 for system_time as of timestamp @ts3;
-
-set system_versioning_innodb_algorithm_simple= off;
 --echo # MVCC is resolved
 select * from t1 for system_time as of transaction @trx_id1;
 select * from t1 for system_time as of timestamp @ts1;

sql/sql_class.h

@@ -726,7 +726,6 @@ typedef struct system_variables
   uint in_subquery_conversion_threshold;
 
   vers_asof_timestamp_t vers_asof_timestamp;
-  my_bool vers_innodb_algorithm_simple;
   ulong vers_alter_history;
 } SV;
 

sql/sql_select.cc

@@ -865,8 +865,7 @@ int SELECT_LEX::vers_setup_conds(THD *thd, TABLE_LIST *tables, COND **where_expr
     // have uint64 type of sys_trx_(start|end) field.
     // They need special handling.
     TABLE *t= table->table;
-    if (t->versioned(VERS_TIMESTAMP) ||
-        thd->variables.vers_innodb_algorithm_simple)
+    if (t->versioned(VERS_TIMESTAMP))
     {
       if (vers_conditions)
       {

sql/sys_vars.cc

@@ -396,12 +396,6 @@ static Sys_var_vers_asof Sys_vers_asof_timestamp(
        SESSION_VAR(vers_asof_timestamp.type), NO_CMD_LINE,
        Sys_var_vers_asof::asof_keywords, DEFAULT(SYSTEM_TIME_UNSPECIFIED));
 
-static Sys_var_mybool Sys_vers_innodb_algorithm_simple(
-       "system_versioning_innodb_algorithm_simple",
-       "Use simple algorithm of timestamp handling in InnoDB instead of TRX_SEES",
-       SESSION_VAR(vers_innodb_algorithm_simple), CMD_LINE(OPT_ARG),
-       DEFAULT(TRUE));
-
 static const char *vers_alter_history_keywords[]= {"ERROR", "KEEP",/* "SURVIVE", "DROP",*/ NULL};
 static Sys_var_enum Sys_vers_alter_history(
        "system_versioning_alter_history", "Versioning ALTER TABLE mode. "