Merge branch 'master' into releases/tokudb-7.5

mysql-test/suite/tokudb.bugs/r/db817.result

+drop table if exists ti;
+create table ti (id int primary key) engine=innodb;
+begin;
+insert into ti values (0);
+savepoint b;
+insert into ti values (1);
+savepoint a2;
+insert into ti values (2);
+savepoint b;
+insert into ti values (3);
+rollback to a2;
+commit;
+select * from ti;
+id
+0
+1
+drop table if exists tt;
+create table tt (id int primary key) engine=tokudb;
+begin;
+insert into tt values (0);
+savepoint b;
+insert into tt values (1);
+savepoint a2;
+insert into tt values (2);
+savepoint b;
+insert into tt values (3);
+rollback to a2;
+commit;
+select * from tt;
+id
+0
+1
+drop table ti,tt;

mysql-test/suite/tokudb.bugs/t/db817.test

+# verify that duplicate savepoint names in innodb and tokudb work the same
+source include/have_innodb.inc;
+source include/have_tokudb.inc;
+disable_warnings;
+drop table if exists ti;
+enable_warnings;
+create table ti (id int primary key) engine=innodb;
+begin;
+insert into ti values (0);
+savepoint b;
+insert into ti values (1);
+savepoint a2;
+insert into ti values (2);
+savepoint b;
+insert into ti values (3);
+rollback to a2;
+commit;
+select * from ti;
+
+disable_warnings;
+drop table if exists tt;
+enable_warnings;
+create table tt (id int primary key) engine=tokudb;
+begin;
+insert into tt values (0);
+savepoint b;
+insert into tt values (1);
+savepoint a2;
+insert into tt values (2);
+savepoint b;
+insert into tt values (3);
+rollback to a2;
+commit;
+select * from tt;
+
+drop table ti,tt;
+
+

storage/tokudb/ha_tokudb.cc

@@ -3926,13 +3926,13 @@ int ha_tokudb::write_row(uchar * record) {
             goto cleanup;
         }
     }
-    
     txn = create_sub_trans ? sub_trans : transaction;
-
+    if (tokudb_debug & TOKUDB_DEBUG_TXN) {
+        TOKUDB_HANDLER_TRACE("txn %p", txn);
+    }
     if (tokudb_debug & TOKUDB_DEBUG_CHECK_KEY) {
         test_row_packing(record,&prim_key,&row);
     }
-
     if (loader) {
         error = loader->put(loader, &prim_key, &row);
         if (error) {
@@ -4206,7 +4206,7 @@ int ha_tokudb::delete_row(const uchar * record) {
     bool has_null;
     THD* thd = ha_thd();
     uint curr_num_DBs;
-    tokudb_trx_data* trx = (tokudb_trx_data *) thd_get_ha_data(thd, tokudb_hton);;
+    tokudb_trx_data* trx = (tokudb_trx_data *) thd_get_ha_data(thd, tokudb_hton);
 
     ha_statistic_increment(&SSV::ha_delete_count);
 
@@ -4231,6 +4231,10 @@ int ha_tokudb::delete_row(const uchar * record) {
         goto cleanup;
     }
 
+    if (tokudb_debug & TOKUDB_DEBUG_TXN) {
+        TOKUDB_HANDLER_TRACE("all %p stmt %p sub_sp_level %p transaction %p", trx->all, trx->stmt, trx->sub_sp_level, transaction);
+    }
+
     error = db_env->del_multiple(
         db_env, 
         share->key_file[primary_key], 

storage/tokudb/hatoku_hton.cc

@@ -946,7 +946,7 @@ cleanup:
 #endif
 
 static int tokudb_savepoint(handlerton * hton, THD * thd, void *savepoint) {
-    TOKUDB_DBUG_ENTER("");
+    TOKUDB_DBUG_ENTER("%p", savepoint);
     int error;
     SP_INFO save_info = (SP_INFO)savepoint;
     tokudb_trx_data *trx = (tokudb_trx_data *) thd_get_ha_data(thd, hton);
@@ -967,6 +967,9 @@ static int tokudb_savepoint(handlerton * hton, THD * thd, void *savepoint) {
         trx->sp_level = save_info->txn;
         save_info->in_sub_stmt = false;
     }
+    if (tokudb_debug & TOKUDB_DEBUG_TXN) {
+        TOKUDB_TRACE("begin txn %p", save_info->txn);
+    }
     save_info->trx = trx;
     error = 0;
 cleanup:
@@ -974,7 +977,7 @@ cleanup:
 }
 
 static int tokudb_rollback_to_savepoint(handlerton * hton, THD * thd, void *savepoint) {
-    TOKUDB_DBUG_ENTER("");
+    TOKUDB_DBUG_ENTER("%p", savepoint);
     int error;
     SP_INFO save_info = (SP_INFO)savepoint;
     DB_TXN* parent = NULL;
@@ -982,6 +985,9 @@ static int tokudb_rollback_to_savepoint(handlerton * hton, THD * thd, void *save
 
     tokudb_trx_data *trx = (tokudb_trx_data *) thd_get_ha_data(thd, hton);
     parent = txn_to_rollback->parent;
+    if (tokudb_debug & TOKUDB_DEBUG_TXN) {
+        TOKUDB_TRACE("rollback txn %p", txn_to_rollback);
+    }
     if (!(error = txn_to_rollback->abort(txn_to_rollback))) {
         if (save_info->in_sub_stmt) {
             trx->sub_sp_level = parent;
@@ -995,24 +1001,27 @@ static int tokudb_rollback_to_savepoint(handlerton * hton, THD * thd, void *save
 }
 
 static int tokudb_release_savepoint(handlerton * hton, THD * thd, void *savepoint) {
-    TOKUDB_DBUG_ENTER("");
-    int error;
-
+    TOKUDB_DBUG_ENTER("%p", savepoint);
+    int error = 0;
     SP_INFO save_info = (SP_INFO)savepoint;
     DB_TXN* parent = NULL;
     DB_TXN* txn_to_commit = save_info->txn;
 
     tokudb_trx_data *trx = (tokudb_trx_data *) thd_get_ha_data(thd, hton);
     parent = txn_to_commit->parent;
-    if (!(error = txn_to_commit->commit(txn_to_commit, 0))) {
+    if (tokudb_debug & TOKUDB_DEBUG_TXN) {
+        TOKUDB_TRACE("commit txn %p", txn_to_commit);
+    }
+    DB_TXN *child = txn_to_commit->get_child(txn_to_commit);
+    if (child == NULL && !(error = txn_to_commit->commit(txn_to_commit, 0))) {
         if (save_info->in_sub_stmt) {
             trx->sub_sp_level = parent;
         }
         else {
             trx->sp_level = parent;
         }
-        save_info->txn = NULL;
     }
+    save_info->txn = NULL;
     TOKUDB_DBUG_RETURN(error);
 }