Lua error leads to Segfault

Detail name	Value
Changelog Number	18022
Type	Bug
Status	Resolved
Affected Versions	Exasol 7.1.0, Exasol 8.0.0
Fix Versions	Exasol 8.25.0, Exasol 7.1.26
Resolution Date	2024-02-15

Description

When executing Lua script, which imports another Lua script throwing an exception that a type can’t be handled, the query returns an internal server error.

CREATE SCHEMA test;
open schema test;
--/
CREATE
OR
REPLACE lua script test.s_test_hashtype() returns rowcount AS 

SQL =
"select a from  (VALUES (hashtype_md5('A')) AS t(a))"
res=query(SQL)
SQL = "select '"..res[1].A.."'"
res=query(SQL)
/
--/
CREATE OR REPLACE lua script test.s2 returns rowcount AS
import("test.s_test_hashtype", "foo")
res = foo.toString()
/

EXECUTE SCRIPT test.s2();

Workaround

There is no workaround.

Fix

Execution of above script does not cause an internal server error. An exception from the imported script is thrown instead.