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MDEV-16222 Assertion `0' failed in row_purge_remove_sec_if_poss_leaf on table with virtual columns and indexes
Cause Stale thd->m_stmt_da->m_sql_errno which is from different invocation. Fix Reset error state before attempt to open table.
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‎mysql-test/suite/innodb/r/purge_secondary_mdev-16222.result

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#
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# MDEV-16222 Assertion `0' failed in row_purge_remove_sec_if_poss_leaf on table with virtual columns and indexes
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#
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set @saved_frequency= @@global.innodb_purge_rseg_truncate_frequency;
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set global innodb_purge_rseg_truncate_frequency= 1;
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set @saved_dbug= @@global.debug_dbug;
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set global debug_dbug= "+d,ib_purge_virtual_mdev_16222_1,ib_purge_virtual_mdev_16222_2";
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create table t1 (
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pk serial, vb tinyblob as (b) virtual, b tinyblob,
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primary key(pk), index (vb(64)))
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engine innodb;
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insert ignore into t1 (b) values ('foo');
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select * into outfile 'load.data' from t1;
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load data infile 'load.data' replace into table t1;
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set debug_sync= "now WAIT_FOR latch_released";
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set global debug_dbug= "-d,ib_purge_virtual_mdev_16222_1";
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drop table t1;
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set debug_sync= "now SIGNAL drop_started WAIT_FOR got_no_such_table";
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create table t1 (
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pk serial, vb tinyblob as (b) virtual, b tinyblob,
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primary key(pk), index (vb(64)))
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engine innodb;
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insert ignore into t1 (b) values ('foo');
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select * into outfile 'load.data' from t1;
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load data infile 'load.data' replace into table t1;
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set debug_sync= "now WAIT_FOR got_no_such_table";
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set global debug_dbug= @saved_dbug;
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drop table t1;
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set global innodb_purge_rseg_truncate_frequency= @saved_frequency;
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set debug_sync= "RESET";

‎mysql-test/suite/innodb/t/purge_secondary_mdev-16222.opt

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--innodb-purge-threads=1

‎mysql-test/suite/innodb/t/purge_secondary_mdev-16222.test

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--source include/have_debug.inc
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--source include/have_innodb.inc
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--echo #
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--echo # MDEV-16222 Assertion `0' failed in row_purge_remove_sec_if_poss_leaf on table with virtual columns and indexes
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--echo #
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--let $datadir= `select @@datadir`
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set @saved_frequency= @@global.innodb_purge_rseg_truncate_frequency;
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set global innodb_purge_rseg_truncate_frequency= 1;
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set @saved_dbug= @@global.debug_dbug;
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set global debug_dbug= "+d,ib_purge_virtual_mdev_16222_1,ib_purge_virtual_mdev_16222_2";
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create table t1 (
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pk serial, vb tinyblob as (b) virtual, b tinyblob,
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primary key(pk), index (vb(64)))
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engine innodb;
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insert ignore into t1 (b) values ('foo');
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select * into outfile 'load.data' from t1;
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load data infile 'load.data' replace into table t1;
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set debug_sync= "now WAIT_FOR latch_released";
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set global debug_dbug= "-d,ib_purge_virtual_mdev_16222_1";
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drop table t1;
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--remove_file $datadir/test/load.data
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set debug_sync= "now SIGNAL drop_started WAIT_FOR got_no_such_table";
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create table t1 (
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pk serial, vb tinyblob as (b) virtual, b tinyblob,
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primary key(pk), index (vb(64)))
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engine innodb;
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insert ignore into t1 (b) values ('foo');
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select * into outfile 'load.data' from t1;
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load data infile 'load.data' replace into table t1;
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set debug_sync= "now WAIT_FOR got_no_such_table";
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# FIXME: Racing condition here:
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# 1. purge thread goes into sending got_no_such_table
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# 2. test thread finishes debug_sync= "RESET" below
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# 3. purge thread sends got_no_such_table
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set global debug_dbug= @saved_dbug;
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# cleanup
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drop table t1;
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--remove_file $datadir/test/load.data
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set global innodb_purge_rseg_truncate_frequency= @saved_frequency;
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set debug_sync= "RESET";

‎sql/sql_class.cc

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Original file line numberDiff line numberDiff line change
@@ -4826,6 +4826,11 @@ unsigned long long thd_get_query_id(const MYSQL_THD thd)
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return((unsigned long long)thd->query_id);
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}
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4829+
void thd_clear_error(MYSQL_THD thd)
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{
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thd->clear_error();
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}
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extern "C" const struct charset_info_st *thd_charset(MYSQL_THD thd)
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{
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return(thd->charset());

‎sql/sql_table.cc

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Original file line numberDiff line numberDiff line change
@@ -2108,6 +2108,11 @@ bool mysql_rm_table(THD *thd,TABLE_LIST *tables, bool if_exists,
21082108
}
21092109
}
21102110

2111+
DBUG_EXECUTE_IF("ib_purge_virtual_mdev_16222_1",
2112+
DBUG_ASSERT(!debug_sync_set_action(
2113+
thd,
2114+
STRING_WITH_LEN("now SIGNAL drop_started"))););
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21112116
/* mark for close and remove all cached entries */
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thd->push_internal_handler(&err_handler);
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error= mysql_rm_table_no_locks(thd, tables, if_exists, drop_temporary,

‎sql/table.cc

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Original file line numberDiff line numberDiff line change
@@ -8256,6 +8256,7 @@ int TABLE::update_virtual_fields(handler *h, enum_vcol_update_mode update_mode)
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82578257
int TABLE::update_virtual_field(Field *vf)
82588258
{
8259+
DBUG_ASSERT(!in_use->is_error());
82598260
Query_arena backup_arena;
82608261
DBUG_ENTER("TABLE::update_virtual_field");
82618262
in_use->set_n_backup_active_arena(expr_arena, &backup_arena);

‎storage/innobase/handler/ha_innodb.cc

Lines changed: 23 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -118,6 +118,8 @@ this program; if not, write to the Free Software Foundation, Inc.,
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extern "C" void thd_mark_transaction_to_rollback(MYSQL_THD thd, bool all);
120120
unsigned long long thd_get_query_id(const MYSQL_THD thd);
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void thd_clear_error(MYSQL_THD thd);
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121123
TABLE *find_fk_open_table(THD *thd, const char *db, size_t db_len,
122124
const char *table, size_t table_len);
123125
MYSQL_THD create_thd();
@@ -20244,6 +20246,8 @@ static TABLE* innodb_acquire_mdl(THD* thd, dict_table_t* table)
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return NULL;
2024520247
}
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20249+
DEBUG_SYNC(thd, "ib_purge_virtual_latch_released");
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2024720251
const table_id_t table_id = table->id;
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retry_mdl:
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const bool unaccessible = !table->is_readable() || table->corrupted;
@@ -20255,6 +20259,10 @@ static TABLE* innodb_acquire_mdl(THD* thd, dict_table_t* table)
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2025620260
TABLE* mariadb_table = open_purge_table(thd, db_buf, db_buf_len,
2025720261
tbl_buf, tbl_buf_len);
20262+
if (!mariadb_table)
20263+
thd_clear_error(thd);
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20265+
DEBUG_SYNC(thd, "ib_purge_virtual_got_no_such_table");
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2025920267
table = dict_table_open_on_id(table_id, false, DICT_TABLE_OP_NORMAL);
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@@ -20304,6 +20312,20 @@ static TABLE* innodb_acquire_mdl(THD* thd, dict_table_t* table)
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for purge thread */
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static TABLE* innodb_find_table_for_vc(THD* thd, dict_table_t* table)
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{
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DBUG_EXECUTE_IF(
20316+
"ib_purge_virtual_mdev_16222_1",
20317+
DBUG_ASSERT(!debug_sync_set_action(
20318+
thd,
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STRING_WITH_LEN("ib_purge_virtual_latch_released "
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"SIGNAL latch_released "
20321+
"WAIT_FOR drop_started"))););
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DBUG_EXECUTE_IF(
20323+
"ib_purge_virtual_mdev_16222_2",
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DBUG_ASSERT(!debug_sync_set_action(
20325+
thd,
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STRING_WITH_LEN("ib_purge_virtual_got_no_such_table "
20327+
"SIGNAL got_no_such_table"))););
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if (THDVAR(thd, background_thread)) {
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/* Purge thread acquires dict_sys.latch while
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processing undo log record. Release it
@@ -20639,6 +20661,7 @@ innobase_get_computed_value(
2063920661
dbug_tmp_restore_column_map(mysql_table->write_set, old_write_set);
2064020662

2064120663
if (ret != 0) {
20664+
// FIXME: Why this error message is macro-hidden?
2064220665
#ifdef INNODB_VIRTUAL_DEBUG
2064320666
ib::warn() << "Compute virtual column values failed ";
2064420667
fputs("InnoDB: Cannot compute value for following record ",

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