1
我正在寫一個小型Python腳本來將數據異步到Cassandra中,但在調整代碼時需要一些幫助。在多線程中使用python cassandra驅動程序寫入數據庫
現在我有這個它的工作原理:
from cassandra.cluster import Cluster
cluster = Cluster(['111.111.111.111'])
session = cluster.connect('testingKeyspace')
with open('dataImport.txt') as f:
for line in f:
session.execute (
"""
INSERT INTO tstTable (id, accts, info)
VALUES (%s)
""" $ (line)
)
,但是當我在異步運行是這樣的:
from cassandra.cluster import Cluster
cluster = Cluster(['111.111.111.111'])
session = cluster.connect('testingKeyspace')
with open('dataImport.txt') as f:
for line in f:
session.execute_async (
"""
INSERT INTO tstTable (id, accts, info)
VALUES (%s)
""" $ (line)
)
我得到這個錯誤:
", consistency=Not Set>' request_id=187 result=(no result yet) exception=None host=10.205.111.43>
<ResponseFuture: query='<SimpleStatement query="
爲什麼異步給我錯誤回來,並不確定單個執行。
公平的警告......我第一次使用python所以在這裏學習模式......