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MDEV-39433: Crash when recording context for a sequence query #5193

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Merged
bsrikanth-mariadb merged 1 commit into from
Jun 9, 2026
Merged

MDEV-39433: Crash when recording context for a sequence query #5193

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24 changes: 11 additions & 13 deletions mysql-test/include/get_rec_idx_ranges_from_opt_ctx.inc
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Original file line number Diff line number Diff line change
Expand Up @@ -3,19 +3,16 @@ set @opt_context=
context,
'(?<=set @opt_context=\')([\n\r].*)*(?=\'\;#opt_context_ends)')
from information_schema.optimizer_context);
set @records=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
select *from json_table(@records,
'$[*]' columns(file_stat_records text path '$')) as jt;
set @file_stat_records=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
select *from json_table(@file_stat_records,
'$[*]' columns(file_stat_records text path '$')) as jt;
set @indexes=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));

set @table_contexts= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_contexts[*]')));
select *from json_table(
@indexes, '$[*][*]' columns(index_name text path '$.index_name',
rec_per_key json path '$.rec_per_key')) as jt;
@table_contexts,
'$[*]' columns(table_name text path '$.name',
file_stat_records text path '$.file_stat_records',
index_name text path '$**.indexes[*].index_name',
rec_per_key json path '$**.indexes[*].rec_per_key'
)) as jt;

set @list_ranges=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));
select *from json_table(
Expand All @@ -24,4 +21,5 @@ select *from json_table(
ranges json path '$.ranges',
num_rows int path '$.num_rows',
max_index_blocks int path '$.max_index_blocks',
max_row_blocks int path '$.max_row_blocks')) as jt;
max_row_blocks int path '$.max_row_blocks'
)) as jt;
75 changes: 12 additions & 63 deletions mysql-test/main/opt_context_load_stats_basic.result
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Original file line number Diff line number Diff line change
Expand Up @@ -31,30 +31,16 @@ set @opt_context=
context,
'(?<=set @opt_context=\')([\n\r].*)*(?=\'\;#opt_context_ends)')
from information_schema.optimizer_context);
set @records=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
select *from json_table(@records,
'$[*]' columns(file_stat_records text path '$')) as jt;
file_stat_records
20
set @file_stat_records=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
select *from json_table(@file_stat_records,
'$[*]' columns(file_stat_records text path '$')) as jt;
file_stat_records
20
set @indexes=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));
set @table_contexts= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_contexts[*]')));
select *from json_table(
@indexes, '$[*][*]' columns(index_name text path '$.index_name',
rec_per_key json path '$.rec_per_key')) as jt;
index_name rec_per_key
t1_idx_a ["4"]
t1_idx_b ["3"]
t1_idx_ab [
"4",
"1"
]
@table_contexts,
'$[*]' columns(table_name text path '$.name',
file_stat_records text path '$.file_stat_records',
index_name text path '$**.indexes[*].index_name',
rec_per_key json path '$**.indexes[*].rec_per_key'
)) as jt;
table_name file_stat_records index_name rec_per_key
db1.t1 20 NULL NULL
set @list_ranges=
(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));
select *from json_table(
Expand All @@ -63,14 +49,14 @@ select *from json_table(
ranges json path '$.ranges',
num_rows int path '$.num_rows',
max_index_blocks int path '$.max_index_blocks',
max_row_blocks int path '$.max_row_blocks')) as jt;
max_row_blocks int path '$.max_row_blocks'
)) as jt;
index_name ranges num_rows max_index_blocks max_row_blocks
t1_idx_a ["(NULL) < (a) < (3)"] 12 1 1
t1_idx_b ["(6) < (b)"] 2 1 1
t1_idx_ab ["(NULL) < (a) < (3)"] 12 1 1
set @saved_opt_context_1=@opt_context;
set @saved_records_1=@records;
set @saved_indexes_1=@indexes;
set @saved_table_contexts= @table_contexts;
set @saved_list_ranges_1=@list_ranges;
#
# load stats in JSON format into variable optimizer_replay_context
Expand Down Expand Up @@ -129,21 +115,8 @@ from information_schema.optimizer_context);
select JSON_EQUALS(@saved_opt_context_1, @opt_context);
JSON_EQUALS(@saved_opt_context_1, @opt_context)
0
set @records= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
set @indexes=(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));
set @list_ranges= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));
set @saved_records_2 = @records;
set @saved_indexes_2 = @indexes;
set @saved_list_ranges_2 = @list_ranges;
select JSON_EQUALS(@saved_records_2, @saved_records_1);
JSON_EQUALS(@saved_records_2, @saved_records_1)
0
select * from json_table(@records, '$[*]' columns(file_stat_records text path '$')) as jt;
file_stat_records
40
select JSON_EQUALS(@saved_indexes_2, @saved_indexes_1);
JSON_EQUALS(@saved_indexes_2, @saved_indexes_1)
1
select JSON_EQUALS(@saved_list_ranges_2, @saved_list_ranges_1);
JSON_EQUALS(@saved_list_ranges_2, @saved_list_ranges_1)
0
Expand Down Expand Up @@ -240,15 +213,7 @@ from information_schema.optimizer_context);
select JSON_EQUALS(@saved_opt_context_1, @opt_context);
JSON_EQUALS(@saved_opt_context_1, @opt_context)
0
set @records= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
set @indexes=(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));
set @list_ranges= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));
select JSON_EQUALS(@saved_records_2, @records);
JSON_EQUALS(@saved_records_2, @records)
1
select JSON_EQUALS(@saved_indexes_2, @indexes);
JSON_EQUALS(@saved_indexes_2, @indexes)
1
select JSON_EQUALS(@saved_list_ranges_2, @list_ranges);
JSON_EQUALS(@saved_list_ranges_2, @list_ranges)
1
Expand All @@ -273,23 +238,7 @@ set @opt_context=
context,
'(?<=set @opt_context=\')([\n\r].*)*(?=\'\;#opt_context_ends)')
from information_schema.optimizer_context);
set @records= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
set @indexes=(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));
set @list_ranges= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));
select JSON_EQUALS(@saved_records_2, @records);
JSON_EQUALS(@saved_records_2, @records)
1
select JSON_EQUALS(@saved_indexes_2, @indexes);
JSON_EQUALS(@saved_indexes_2, @indexes)
0
select * from json_table(@indexes, '$[*][*]' columns(index_name text path '$.index_name', rec_per_key json path '$.rec_per_key')) as jt;
index_name rec_per_key
t1_idx_a ["8"]
t1_idx_b ["5"]
t1_idx_ab [
"8",
"2"
]
select JSON_EQUALS(@saved_list_ranges_2, @list_ranges);
JSON_EQUALS(@saved_list_ranges_2, @list_ranges)
1
Expand Down
19 changes: 1 addition & 18 deletions mysql-test/main/opt_context_load_stats_basic.test
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Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,7 @@ select * from t1 where a < 3 and b > 6;
--source include/get_rec_idx_ranges_from_opt_ctx.inc

set @saved_opt_context_1=@opt_context;
set @saved_records_1=@records;
set @saved_indexes_1=@indexes;
set @saved_table_contexts= @table_contexts;
set @saved_list_ranges_1=@list_ranges;

--echo #
Expand Down Expand Up @@ -79,17 +78,10 @@ select * from t1 where a < 3 and b > 6;

select JSON_EQUALS(@saved_opt_context_1, @opt_context);

set @records= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
set @indexes=(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));
set @list_ranges= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));

set @saved_records_2 = @records;
set @saved_indexes_2 = @indexes;
set @saved_list_ranges_2 = @list_ranges;

select JSON_EQUALS(@saved_records_2, @saved_records_1);
select * from json_table(@records, '$[*]' columns(file_stat_records text path '$')) as jt;
select JSON_EQUALS(@saved_indexes_2, @saved_indexes_1);
select JSON_EQUALS(@saved_list_ranges_2, @saved_list_ranges_1);
select * from json_table(
@list_ranges,
Expand Down Expand Up @@ -153,12 +145,8 @@ select * from t1 where a < 3 and b > 6;

select JSON_EQUALS(@saved_opt_context_1, @opt_context);

set @records= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
set @indexes=(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));
set @list_ranges= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));

select JSON_EQUALS(@saved_records_2, @records);
select JSON_EQUALS(@saved_indexes_2, @indexes);
select JSON_EQUALS(@saved_list_ranges_2, @list_ranges);

--echo #
Expand All @@ -174,13 +162,8 @@ select * from t1 where a < 3 and b > 6;

--source include/get_opt_context.inc

set @records= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.file_stat_records')));
set @indexes=(select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.indexes')));
set @list_ranges= (select JSON_DETAILED(JSON_EXTRACT(@opt_context, '$**.list_ranges')));

select JSON_EQUALS(@saved_records_2, @records);
select JSON_EQUALS(@saved_indexes_2, @indexes);
select * from json_table(@indexes, '$[*][*]' columns(index_name text path '$.index_name', rec_per_key json path '$.rec_per_key')) as jt;
select JSON_EQUALS(@saved_list_ranges_2, @list_ranges);

set @saved_opt_context_2 = @opt_context;
Expand Down
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