cassandra-driver

Manual Pagination in Cassandra

≡放荡痞女 提交于 2019-12-24 18:00:24
问题 I use the manual pagination feature in Cassandra. client.eachRow(query, params, options, function (n, row) { // Invoked per each row in all the pages console.log("row",row); }, function (err, result) { if(typeof result !== undefined) { pageState = result.pageState; console.log("pagestate output : ", pageState); if(pageState != null) { // } } } ); Say we have 4 row / entries in a table 'test'. When I try to query with fetchsize as '2' It returns two entres with result.pageState then I used the

Syntax error in CQL query when trying to write to cassandra from python

喜你入骨 提交于 2019-12-11 00:35:53
问题 So, I am building an application in python that takes data from twitter and then saves it to cassandra. My current problems lies in a script which reads data from kafka and tries to write it to cassandra, as follows: import threading, logging, time import multiprocessing from cassandra.cluster import Cluster from kafka import KafkaConsumer, KafkaProducer class Consumer(multiprocessing.Process): def __init__(self): multiprocessing.Process.__init__(self) self.stop_event = multiprocessing.Event(