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MDEV-14824 Assertion `!trx_is_started(trx)' failed in innobase_start_trx_and_assign_read_view

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In CREATE SEQUENCE or CREATE TEMPORARY SEQUENCE, we should not start
an InnoDB transaction for inserting the sequence status record into
the underlying no-rollback table. Because we did this, a debug assertion
failure would fail in START TRANSACTION WITH CONSISTENT SNAPSHOT after
CREATE TEMPORARY SEQUENCE was executed.

row_ins_step(): Do not start the transaction. Let the caller do that.

que_thr_step(): Start the transaction before calling row_ins_step().

row_ins_clust_index_entry(): Skip locking and undo logging for no-rollback
tables, even for temporary no-rollback tables.

row_ins_index_entry(): Allow trx->id==0 for no-rollback tables.

row_insert_for_mysql(): Do not start a transaction for no-rollback tables.
This commit is contained in:
Marko Mäkelä
2018-01-11 15:39:36 +02:00
parent 919169e1f9
commit 773c3ceb57
5 changed files with 13 additions and 10 deletions
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1
mysql-test/suite/sql_sequence/create.result
View File

@ -482,6 +482,7 @@ select previous value for t1;
previous value for t1 previous value for t1
1 1
CREATE TEMPORARY SEQUENCE t1 start with 100 minvalue 100 maxvalue 200 increment by 1 cache 10 engine=innodb; CREATE TEMPORARY SEQUENCE t1 start with 100 minvalue 100 maxvalue 200 increment by 1 cache 10 engine=innodb;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
select previous value for t1; select previous value for t1;
previous value for t1 previous value for t1
NULL NULL

1
mysql-test/suite/sql_sequence/create.test
View File

@ -362,6 +362,7 @@ CREATE SEQUENCE t1 start with 1 minvalue 1 maxvalue 10 increment by 1 cache 10 e
select next value for t1; select next value for t1;
select previous value for t1; select previous value for t1;
CREATE TEMPORARY SEQUENCE t1 start with 100 minvalue 100 maxvalue 200 increment by 1 cache 10 engine=innodb; CREATE TEMPORARY SEQUENCE t1 start with 100 minvalue 100 maxvalue 200 increment by 1 cache 10 engine=innodb;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
select previous value for t1; select previous value for t1;
select next value for t1; select next value for t1;
select previous value for t1; select previous value for t1;

3
storage/innobase/que/que0que.cc
View File

@ -1,7 +1,7 @@
/***************************************************************************** /*****************************************************************************
Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved. Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2017, MariaDB Corporation. Copyright (c) 2017, 2018, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software the terms of the GNU General Public License as published by the Free Software
@ -1030,6 +1030,7 @@ que_thr_step(
} else if (type == QUE_NODE_SELECT) { } else if (type == QUE_NODE_SELECT) {
thr = row_sel_step(thr); thr = row_sel_step(thr);
} else if (type == QUE_NODE_INSERT) { } else if (type == QUE_NODE_INSERT) {
trx_start_if_not_started_xa(thr_get_trx(thr), true);
thr = row_ins_step(thr); thr = row_ins_step(thr);
} else if (type == QUE_NODE_UPDATE) { } else if (type == QUE_NODE_UPDATE) {
trx_start_if_not_started_xa(thr_get_trx(thr), true); trx_start_if_not_started_xa(thr_get_trx(thr), true);

12
storage/innobase/row/row0ins.cc
View File

@ -1,7 +1,7 @@
/***************************************************************************** /*****************************************************************************
Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved. Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2016, 2017, MariaDB Corporation. Copyright (c) 2016, 2018, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software the terms of the GNU General Public License as published by the Free Software
@ -3193,9 +3193,9 @@ row_ins_clust_index_entry(
/* Try first optimistic descent to the B-tree */ /* Try first optimistic descent to the B-tree */
log_free_check(); log_free_check();
const ulint flags = dict_table_is_temporary(index->table) const ulint flags = index->table->no_rollback() ? BTR_NO_ROLLBACK
? BTR_NO_LOCKING_FLAG : dict_table_is_temporary(index->table)
: index->table->no_rollback() ? BTR_NO_ROLLBACK : 0; ? BTR_NO_LOCKING_FLAG : 0;
err = row_ins_clust_index_entry_low( err = row_ins_clust_index_entry_low(
flags, BTR_MODIFY_LEAF, index, n_uniq, entry, flags, BTR_MODIFY_LEAF, index, n_uniq, entry,
@ -3304,7 +3304,7 @@ row_ins_index_entry(
dtuple_t* entry, /*!< in/out: index entry to insert */ dtuple_t* entry, /*!< in/out: index entry to insert */
que_thr_t* thr) /*!< in: query thread */ que_thr_t* thr) /*!< in: query thread */
{ {
ut_ad(thr_get_trx(thr)->id != 0); ut_ad(thr_get_trx(thr)->id || index->table->no_rollback());
DBUG_EXECUTE_IF("row_ins_index_entry_timeout", { DBUG_EXECUTE_IF("row_ins_index_entry_timeout", {
DBUG_SET("-d,row_ins_index_entry_timeout"); DBUG_SET("-d,row_ins_index_entry_timeout");
@ -3764,8 +3764,6 @@ row_ins_step(
trx = thr_get_trx(thr); trx = thr_get_trx(thr);
trx_start_if_not_started_xa(trx, true);
node = static_cast<ins_node_t*>(thr->run_node); node = static_cast<ins_node_t*>(thr->run_node);
ut_ad(que_node_get_type(node) == QUE_NODE_INSERT); ut_ad(que_node_get_type(node) == QUE_NODE_INSERT);

4
storage/innobase/row/row0mysql.cc
View File

@ -1,7 +1,7 @@
/***************************************************************************** /*****************************************************************************
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All Rights Reserved. Copyright (c) 2000, 2017, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2015, 2017, MariaDB Corporation. Copyright (c) 2015, 2018, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software the terms of the GNU General Public License as published by the Free Software
@ -1453,7 +1453,9 @@ row_insert_for_mysql(
row_mysql_delay_if_needed(); row_mysql_delay_if_needed();
if (!table->no_rollback()) {
trx_start_if_not_started_xa(trx, true); trx_start_if_not_started_xa(trx, true);
}
row_get_prebuilt_insert_row(prebuilt); row_get_prebuilt_insert_row(prebuilt);
node = prebuilt->ins_node; node = prebuilt->ins_node;