Make sure that index_cmd fails if ulimit -Sn fails

src/qlever/commands/index.py

@@ -235,10 +235,8 @@ def execute(self, args) -> bool:
         # If the total file size is larger than 10 GB, set ulimit (such that a
         # large number of open files is allowed).
         total_file_size = get_total_file_size(shlex.split(args.input_files))
-        if args.ulimit is not None:
-            index_cmd = f"ulimit -Sn {args.ulimit}; {index_cmd}"
-        elif total_file_size > 1e10:
-            index_cmd = f"ulimit -Sn 1048576; {index_cmd}"
+        ulimit = args.ulimit if args.ulimit is not None else 1048576
+        index_cmd = f"ulimit -Sn {ulimit} && {index_cmd}"
 
         # Run the command in a container (if so desired).
         if args.system in Containerize.supported_systems():

src/qlever/qlever_old.py

@@ -523,7 +523,7 @@ def action_index(self, only_show=False):
             self.config["index"]["file_names"].split()
         )
         if total_file_size > 10:
-            cmdline = f"ulimit -Sn 524288 && {cmdline}"
+            cmdline = f"ulimit -Sn 1048576; {cmdline}"
 
         # If we are using Docker, run the command in a Docker container.
         # Here is how the shell script does it:

test/qlever/commands/test_index_execute.py

@@ -256,7 +256,7 @@ def test_execute_total_file_size_greater_than_ten_gb(
 
         # Assertions
         expected_index_cmd = (
-            f"ulimit -Sn 524288 && {args.cat_input_files} | {args.index_binary}"
+            f"ulimit -Sn 1048576; {args.cat_input_files} | {args.index_binary}"
             f" -i {args.name} -s {args.name}.settings.json"
             f" -F {args.format} -f -"
             f" | tee {args.name}.index-log.txt"