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parallel-workload: Introduce bad queries #34354

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59 changes: 59 additions & 0 deletions misc/python/materialize/parallel_workload/executor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,7 @@ class Executor:
last_status: str
action_run_since_last_commit_rollback: bool
autocommit: bool
allow_bad: bool

def __init__(
self,
Expand All @@ -75,6 +76,51 @@ def __init__(
self.use_ws = self.rng.choice([True, False]) if self.ws else False
self.autocommit = cur.connection.autocommit
self.mz_service = "materialized"
self.allow_bad = False

self.keywords = [
"+",
"-",
"*",
"/",
"%",
"+",
"-",
"~",
"=",
"<>",
"!=",
"<",
"<=",
">",
">=",
"&",
"|",
"#",
"^",
"<<",
">>",
"||",
"~",
"!~",
"~*",
"!~*",
"@>",
"<@",
"&&",
"(",
")",
";",
"0",
'""',
"NULL",
]
with open("src/sql-lexer/src/keywords.txt") as f:
for line in f:
line = line.strip()
if not line or line.startswith("#"):
continue
self.keywords.append(line.upper())

def set_isolation(self, level: str) -> None:
self.execute(f"SET TRANSACTION_ISOLATION TO '{level}'")
Expand Down Expand Up @@ -161,6 +207,19 @@ def execute(
http_str = " [HTTP]" if is_http else " [WS]" if use_ws and self.ws else ""
self.log(f"{query}{extra_info_str}{http_str}")
self.last_status = "running"

if self.allow_bad and self.rng.choice([True, False]):
parts = query.split(" ")
idx = self.rng.randrange(len(parts))
parts[idx] = str(
self.rng.choice(
self.keywords
if self.rng.choice([True, False])
else self.db.db_objects()
)
)
query = " ".join(parts)

try:
if not is_http:
if use_ws and self.ws:
Expand Down
12 changes: 8 additions & 4 deletions misc/python/materialize/parallel_workload/worker.py
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,7 @@ def run(
cur.execute("SELECT pg_backend_pid()")
self.exe.pg_pid = cur.fetchall()[0][0]

self.exe.allow_bad = True
while time.time() < self.end_time:
action = self.rng.choices(self.actions, self.weights)[0]
try:
Expand Down Expand Up @@ -128,10 +129,13 @@ def run(
self.exe.rollback_next = True
break
else:
thread_name = threading.current_thread().getName()
self.occurred_exception = e
print(f"+++ [{thread_name}] Query failed: {e.query} {e.msg}")
raise
if self.exe.allow_bad:
self.exe.rollback_next = True
else:
thread_name = threading.current_thread().getName()
self.occurred_exception = e
print(f"+++ [{thread_name}] Query failed: {e.query} {e.msg}")
raise
except Exception as e:
self.occurred_exception = e
raise e
Expand Down