本文整理汇总了Python中util.ImpalaShell.wait_for_query_start方法的典型用法代码示例。如果您正苦于以下问题：Python ImpalaShell.wait_for_query_start方法的具体用法？Python ImpalaShell.wait_for_query_start怎么用？Python ImpalaShell.wait_for_query_start使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类util.ImpalaShell的用法示例。
在下文中一共展示了ImpalaShell.wait_for_query_start方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_cancellation
# 需要导入模块: from util import ImpalaShell [as 别名]
# 或者: from util.ImpalaShell import wait_for_query_start [as 别名]
def test_cancellation(self, vector):
"""Test cancellation (Ctrl+C event). Run a query that sleeps 10ms per row so will run
for 110s if not cancelled, but will detect cancellation quickly because of the small
batch size."""
query = "set num_nodes=1; set mt_dop=1; set batch_size=1; \
select sleep(10) from functional_parquet.alltypesagg"
p = ImpalaShell(vector, ['-q', query])
p.wait_for_query_start()
os.kill(p.pid(), signal.SIGINT)
result = p.get_result()
assert "Cancelling Query" in result.stderr, result.stderr