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MDEV-30651: Assertion `sel->quick' in make_range_rowid_filters

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(Variant for 10.6: return error code from SQL_SELECT::test_quick_select)
The optimizer deals with Rowid Filters this way:

1. First, range optimizer is invoked. It saves information
   about all potential range accesses.
2. A query plan is chosen. Suppose, it uses a Rowid Filter on
   index $IDX.
3. JOIN::make_range_rowid_filters() calls the range optimizer
again to create a quick select on index $IDX which will be used
to populate the rowid filter.

The problem: KILL command catches the query in step #3. Quick
Select is not created which causes a crash.

Fixed by checking if query was killed.
This commit is contained in:
Sergei Petrunia
2024-06-11 16:20:00 +03:00
parent e60acae655
commit ef9e3e73ed
5 changed files with 77 additions and 3 deletions
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28
mysql-test/include/rowid_filter_debug_kill.inc
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@ -55,5 +55,33 @@ disconnect con1;
reap;
set debug_sync='RESET';
--echo #
--echo # MDEV-30651: SIGSEGV in st_join_table::save_explain_data and
--echo # Assertion `sel->quick' failed in make_range_rowid_filters
--echo #
--echo # Reusing table t2 and t3 from previous test
let $target_id= `select connection_id()`;
set debug_sync='in_forced_range_optimize SIGNAL ready1 WAIT_FOR go1';
send
explain
select * from t2, t3
where
t3.key1=t2.a and t3.key2 in (2,3);
connect (con1, localhost, root,,);
set debug_sync='now WAIT_FOR ready1';
evalp kill query $target_id;
set debug_sync='now SIGNAL go1';
connection default;
disconnect con1;
--error ER_QUERY_INTERRUPTED
reap;
set debug_sync='RESET';
drop table t2,t3;
--source include/wait_until_count_sessions.inc