InvalidRequestException（爲什麼：日期期望爲8或0字節）cassandra

Question

我是Cassandra的新手。我正在嘗試創建一個包含時間戳longtype的組合鍵的列族。下面是代碼：

Composite cs = new Composite(); 
cs.addComponent(id, StringSerializer.get()); 
cs.addComponent(tstamp, DateSerializer.get()); 
Mutator mutator = HFactory.createMutator(keyspace, stringSerializer); 
mutator.insert(id, cf.getName(), HFactory.createColumn(cs, id, CompositeSerializer.get(), StringSerializer.get())); 
       mutator.insert(id, cf.getName(), HFactory.createColumn("ipaddress", usrlog.getIpaddress())); 
       mutator.insert(id, cf.getName(), HFactory.createColumn("timestamp", tstamp.getTime(), StringSerializer.get(), LongSerializer.get())); 
       mutator.insert(id, cf.getName(), HFactory.createColumn("search_term", usrlog.getSearchterm())); 
       mutator.insert(id, cf.getName(), HFactory.createColumn("user_agent", usrlog.getUseragent())); 

Answer 1

因爲你插入一個錯誤date.the lengh是不適合。