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08 September, 2023

Some AWS lamba execution have more than 1 S3event key

 Programing Coderfunda     September 08, 2023     No comments   

I'm having an issue when passing events to the AWS lambda function. I have to sync 60k data in 1 json file to a remote server. My solution is to divide the file into many small files (2000 data/ file) since the function cannot process 60k data in 15 minutes. After breaking the files, I will upload them one by one to S3 (time interval is 10 seconds), when a new file is uploaded, it will send a S3Event notification to trigger the function, and that function execution will take the newest uploaded file to process. The speed is impressive, but when the number of data reaches 60k, it does not stop, it continues adding more 4k items (I don't know where it came from). When I check the newest CloudWatch log, it seems there are some executions that have more than 1 S3Events like below "Records": [ { "eventVersion": "2.1", "eventSource": "aws:s3", "awsRegion": "ap-southeast-1", "eventTime": "2023-09-08T06:26:38.873Z", "eventName": "ObjectCreated:Put", "userIdentity": { "principalId": "AWS:AIDA4EODLYGLIMIHEIAVB" }, "object": { "key": "test_4.json", "size": 846900, "eTag": "44768b0689b2acd120c7683d8f0ce236", "sequencer": "0064FABE9E323A01CD" } } } ] "Records": [ { "eventVersion": "2.1", "eventSource": "aws:s3", "awsRegion": "ap-southeast-1", "eventTime": "2023-09-08T06:28:06.642Z", "eventName": "ObjectCreated:Put", "userIdentity": { "principalId": "AWS:AIDA4EODLYGLIMIHEIAVB" }, "object": { "key": "test_12.json", "size": 845141, "eTag": "05008d0d12413f98c3aefa101bbbd5eb", "sequencer": "0064FABEF5B003C033" } } } ] This is so weird, This is the 1st time I have worked with AWS so can someone help me explain the reason? Also, Is it possible to make all execution run synchronously instead of asynchronously? I think if they are running in order, it will be easily to debug then.
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