Preventing Temporary Table Race Conditions and Namespace Pollution in Concurrent Batch Architectures

说明与用途

文章介绍了在 SQLite 中使用临时表时并发工作者导致的竞争条件和命名空间污染的验证方法。通过动态表命名和隔离命名空间消除冲突，而固定名称的反模式则会导致问题。

问题

Concurrent batch workers using hardcoded temporary table names cause race conditions, namespace collisions, and data corruption.

结果

The verification harness demonstrates that dynamic naming with isolated namespaces prevents race conditions and namespace pollution, whereas the anti‑pattern leads to deterministic failures.

工作流

• Define a BatchTaskConfig schema with task_id, use_dynamic_naming, and payload_data.
• Implement run_batch_simulation to create a temporary table name based on task_id when use_dynamic_naming is true.
• Spawn multiple threads, each executing run_batch_simulation against a shared or private SQLite URI.
• Collect SimulationResult objects recording thread_name, table_name, success flag, error_message, and execution_time_sec.
• Aggregate results into a VerificationReport and serialize with orjson.
• Run the harness in a CI/CD pipeline to detect conflicts.

证据

When executing the benchmark harness, the script terminated instantaneously with a ModuleNotFoundError: No module named 'orjson'

来源

Forced unconditional import of orjson was declared at the top‑level module scope without guards.

来源

The script had a brittle hard dependency on non‑standard packages.

来源