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多个 Lambda 函数被触发用于单个批量大小

[英]Multiple Lambda functions are being triggered for single batch size

原文 2022-12-28 09:09:45 9 1 amazon-web-services/ aws-lambda/ amazon-sqs

I have added a trigger to Lambda to Pool for messages from SQS (Standard) with batch size of 10000 and batch window of 10 seconds.我已将触发器添加到 Lambda 到池中，以获取来自 SQS（标准）的消息，批处理大小为 10000，批处理 window 为 10 秒。 For testing, I added 3 messages to my SQS so ideally there should be one lambda function to process all 3 messages but this is not the case, it's triggering 3 lambda functions each for one message.为了测试，我向我的 SQS 添加了 3 条消息，因此理想情况下应该有一个 lambda function 来处理所有 3 条消息，但事实并非如此，它为一条消息触发了 3 个 lambda 函数。 Can anyone help me is there something which I'm missing here?任何人都可以帮助我这里有什么我想念的吗？

1 个解决方案

Can anyone help me is there something which I'm missing here?任何人都可以帮助我这里有什么我想念的吗？

Yes.是的。 Because there are always at least five pooling threads for each lambda function. Each pooler will invoke a function. So its possibile that your 3 messages were pooled by three different poolers, which then invoked your function 3 times (each time with one message).因为每个 lambda function 总是至少有五个池线程。每个 pooler 将调用一个 function。因此您的 3 条消息可能由三个不同的 pooler 池化，然后调用您的 function 3 次（每次一条消息）。 From docs :来自文档：

the Lambda service will begin polling the SQS queue using five parallel long-polling connections . Lambda 服务将开始使用五个并行长轮询连接轮询 SQS 队列。

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