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fix(mysql-loader): refresh REPEATABLE READ snapshot before each query #381

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Merged
Chenglong Wang (Chenglong-MS) merged 2 commits into from
Jul 17, 2026
Merged

fix(mysql-loader): refresh REPEATABLE READ snapshot before each query #381

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[deploy] version 0.8 alpha 1
Chenglong-MS Jul 14, 2026
67f4319
fix(mysql-loader): refresh REPEATABLE READ snapshot before each query
chanxiusun Jul 17, 2026
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7 changes: 7 additions & 0 deletions py-src/data_formulator/data_loader/mysql_data_loader.py
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,13 @@ def _read_sql(self, query: str) -> pa.Table:
conn = self._get_conn()
cur = conn.cursor()
try:
# Force a fresh REPEATABLE READ snapshot on every read so rows
# committed by other sessions after this loader was first
# instantiated are visible without restarting the process.
try:
conn.commit()
Comment on lines +132 to +136
except Exception:
pass
Comment on lines +135 to +138
cur.execute(query)
if cur.description is None:
return pa.table({})
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