DynamoDB BatchWriteItem:提供的项目键列表包含重复项 [英] DynamoDB BatchWriteItem : Provided list of item keys contains duplicates

问题描述

我正在尝试使用DynamoDB操作BatchWriteItem，其中我想在一个表中插入多个记录.

I am trying to use DynamoDB operation BatchWriteItem, wherein I want to insert multiple records into one table.

此表具有一个分区键和一个排序键.

This table has one partition key and one sort key.

我正在使用AWS lambda和Go语言.

I am using AWS lambda and Go language.

我得到了要插入到切片中的元素.

I get the elements to be inserted into a slice.

我正在按照此程序进行操作.

I am following this procedure.

1. 创建PutRequest结构并为列表中的第一条记录添加AttributeValues.

1. Create PutRequest structure and add AttributeValues for the first record from the list.

我正在从此PutRequest

我正在将此WriteRequest添加到array of WriteRequests

我正在创建BatchWriteItemInput，它由RequestItems组成，基本上是 Tablename的映射和WriteRequests的数组.

I am creating BatchWriteItemInput which consists of RequestItems, which is basically a map of Tablename and the array of WriteRequests.

此后，我打电话给BatchWriteItem，这会导致错误-提供的项键列表包含重复项.

After that I am calling BatchWriteItem, which results into an error - Provided list of item keys contains duplicates.

任何指针，为什么会发生这种情况?

Any pointers, why this could be happening?

推荐答案

您提供了两个或多个具有相同分区/排序键的项目.

You've provided two or more items with identical partition/sort keys.

根据 BatchWriteItem 文档，您无法执行多项操作在同一BatchWriteItem请求中的同一项目上.

Per the BatchWriteItem docs, you cannot perform multiple operations on the same item in the same BatchWriteItem request.

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