CURRENT_TEST: spider/bugfix.index
mysqltest: At line 38: query 'select * from t where a > 1 order by a' failed: <Unknown> (2013): Lost connection to server during query

The result from queries just before the failure was:
< snip >
5
6
drop table t_sp1, auto_test_local.t;
#
# MDEV-27581 Wrong result with DESC key on partitioned Spider table
#
create table auto_test_local.t1 (a int primary key);
create table auto_test_local.t2 (a int primary key);
create table t (a int, primary key (a desc)) engine=spider
engine=spider comment='wrapper "mysql", srv "s_1"'
partition by range (a)
(partition p1 values less than (4) comment "table 't1'",
partition p2 values less than (maxvalue) comment "table 't2'");
Warnings:
Warning	138	Spider table params in COMMENT or CONNECTION strings have been deprecated and will be removed in a future release. Please use table options instead.
Warning	138	Spider table params in COMMENT or CONNECTION strings have been deprecated and will be removed in a future release. Please use table options instead.
Warning	138	Spider table params in COMMENT or CONNECTION strings have been deprecated and will be removed in a future release. Please use table options instead.
Warning	138	Spider table params in COMMENT or CONNECTION strings have been deprecated and will be removed in a future release. Please use table options instead.
insert into t values (1),(2),(10),(11);
select * from t where a > 1 order by a;

More results from queries before failure can be found in /dev/shm/var/3/log/index.log
