我正在尝试创建一个运行MySQL数据库的RDS服务器,并收到以下错误:
1 validation error detected: Value '[AWS:RDS::DBInstance]' at 'typeNameList' failed to satisfy constraint: Member must satisfy constraint: [Member must have length less than or equal to 204, Member must have length greater than or equal to 10, Memb
我正在阅读关于Apache中的文档,但我不能理解它的用途,如何以及为什么或在哪些情况下我应该使用它们。使用模式或使用扩展Serializable接口的类有什么区别?
文档中有一个示例:
@DefaultSchema(JavaFieldSchema.class)
public class TransactionPojo {
public String bank;
public double purchaseAmount;
}
PCollection<TransactionPojos> transactionPojos = readTransactionsAsPojo();
但