带有AWS MSKKafkaCDC事务更改的AWS DMS

问题描述

我将通过AWS MSK(Kafka)使用AWS Database Migration Service(DMS)。

我想将同一笔交易中的所有更改发送到Kafka主题的同一分区中-为了保证正确的消息顺序(引用完整性)

为此,我将启用以下属性:

IncludeTransactionDetails – Provides detailed transaction information from the source database. This information includes a commit timestamp,a log position,and values for transaction_id,previous_transaction_id,and transaction_record_id (the record offset within a transaction). The default is false. https://docs.aws.amazon.com/dms/latest/userguide/CHAP_Target.Kafka.html

另外,正如我从同一文档中看到的那样:

AWS DMS supports the following two forms for partition keys:

1. SchemaName.TableName: A combination of the schema and table name.

2. ${AttributeName}: The value of one of the fields in the JSON,or the primary key of the table in the source database.

我有一个问题-如果“ IncludeTransactionDetails = true”,我能否将事件JSON中的“ transaction_id”用作MSK(Kafka)迁移主题的分区键?

解决方法

文档说,您可以定义分区键来对数据进行分组 “您还为每个表定义了一个分区键,Apache Kafka使用该键将数据分组到其分区中”

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