WARN (qtp179622586-21156|21156) [ThreadPoolManager$LogDiscardPolicyThrowException.rejectedExecution():320] Task java.util.concurrent.FutureTask@41170b4f rejected from SQL submitter java.util.concurrent.ThreadPoolExecutor@5a70b128[Running, pool size = 2, active threads = 2, queued tasks = 0, completed tasks = 364]
在fe的web界面多次连续点击表的Data Preview想着来测试稳定性的，结果一下就不显示数据了，日志中报上述警告，而且后续查询也超时
