Statistics: Server crashes in mysql_lock_merge if use_stat_tables is enabled and ANALYZE and ALTER TABLE are executed under lock

#3  <signal handler called>

#4  0x00000000008b8e0e in mysql_lock_merge (a=0x0, b=0x1e99f20)

    at sql/lock.cc:609

#5  0x00000000005d40e5 in Locked_tables_list::reopen_tables (this=0x7f60ac05eb78,

    thd=0x7f60ac05c940) at sql/sql_base.cc:3621

#6  0x00000000006d4332 in mysql_alter_table (thd=0x7f60ac05c940, new_db=0x1e79ee8 "test",

    new_name=0x1e798e8 "t1", create_info=0x7f60b2d57d00, table_list=0x1e79920,

    alter_info=0x7f60b2d57e00, order_num=0, order=0x0, ignore=false, require_online=false)

    at sql/sql_table.cc:7193

#7  0x0000000000955c7b in Alter_table_statement::execute (this=0x1e79ff8, thd=0x7f60ac05c940)

    at sql/sql_alter.cc:106

#8  0x0000000000636091 in mysql_execute_command (thd=0x7f60ac05c940)

    at sql/sql_parse.cc:4459

#9  0x0000000000639197 in mysql_parse (thd=0x7f60ac05c940,

    rawbuf=0x1e79828 "alter table t1 add column a varchar(8)", length=38,

    parser_state=0x7f60b2d58600) at sql/sql_parse.cc:5736

#10 0x000000000062d019 in dispatch_command (command=COM_QUERY, thd=0x7f60ac05c940,

    packet=0x7f60ac11c421 "alter table t1 add column a varchar(8)", packet_length=38)

    at sql/sql_parse.cc:1055

#11 0x000000000062c2ec in do_command (thd=0x7f60ac05c940)

    at sql/sql_parse.cc:794

#12 0x0000000000730d51 in do_handle_one_connection (thd_arg=0x7f60ac05c940)

    at sql/sql_connect.cc:1253

#13 0x0000000000730814 in handle_one_connection (arg=0x7f60ac05c940)

    at sql/sql_connect.cc:1168

#14 0x0000000000abad87 in pfs_spawn_thread (arg=0x7f60ac0c8700)

    at storage/perfschema/pfs.cc:1015

#15 0x00007f60be7aca4f in start_thread () from /lib64/libpthread.so.0

#16 0x00007f60bd54182d in clone () from /lib64/libc.so.6

revision-id: igor@askmonty.org-20120820190537-epzo04x3o58ccj6i

date: 2012-08-20 12:05:37 -0700

build-date: 2012-08-22 05:03:32 +0300

revno: 3362

set use_stat_tables = complementary;

drop table if exists t1;

create table t1 (i int) engine=InnoDB;

lock table t1 write;

analyze table t1;

alter table t1 add column a varchar(8);

# Cleanup

drop table t1;