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Graph/s3-upload-stream-seekability-content-length

Pattern

S3 Upload Stream Requirements

s3-upload-stream-seekability-content-length

A recurring async-upload failure where S3 client operations (PutObject/UploadPart) depend on seekable streams and explicit HTTP metadata like Content-Length; mismatched AWS CLI/SDK builders lead to missing headers, rewind errors, or CancellationExceptions.

Node Details

Public graph metadata

Updated5/1/2026

Connections

30 linked nodes

trying to get an object from my S3 bucket using pre-signed URLs. Tension: I've tried encoding the slashes `%2f` with no change. Outcome: upgrade to the latest SDK, in your case boto3.

the file is remaining in the bucket sometimes with delete markers — when the function runs via the S3 trigger. Tension: If I run the function using the Test button afterwards, it deletes every time. Outcome: I was able to resolve this by using Cloudwatch EventBridge to monitor S3 CreateObject event.

I am using AWS SDK to generate a presigned S3 object URL and sending it as a mail notification. Tension: Even though I am setting the expiration time to 2 days.

aws s3 sync and aws s3 cp fail with MissingContentLength / stream is not seekable errors

This isn't possible with s3 sync — I have an S3 bucket which does not have versioning or lifecycle rules set due to a client decision. Tension: we also want to keep a backup of the files that has been worked on in the last 30 days. Outcome: it would be a perfect use case for S3 bucket Event notifications.

The exception happens at build() — S3Client.builder() .region(Region.US_WEST_1) .credentialsProvider(StaticCredentialsProvider.create(awsCredentials)). Tension: java.lang.NoClassDefFoundError: software/amazon/awssdk/http/auth/scheme/NoAuthAuthScheme. Outcome: Adding http-auth-2.30.4.jar to the classpath resolves this issue and the Exception no longer occurs.

while running an AWS Lambda function. Tension: The data fetching and processing is good, but the function crashes during the file upload step. Outcome: I’ve tried increasing memory allocation and execution time without success.

I need to access certain S3 buckets programmatically using IAM Roles Anywhere — working on a Spring Boot backend service. Tension: I’m unsure how to use it to create IAM Roles Anywhere sessions and authenticate to access S3.

All of the put/upload functions want a set content length. Tension: Building the zip locally is not an option, because the end size of the zip can be tens of GB. Outcome: I essentially need a zip "placeholder" on S3 that I can stream to.

The HTTP request cannot be executed: The peer resets the connection. — When I try to upload files to S3 from storage via an application deployed on the stand. Tension: Everything is working locally. All files is uploading without errors. Outcome: com.amazonaws.SdkClientException exception.

nothing is getting written to the s3 bucket — trying to use ytdl-core in an AWS lambda function to upload an .mp4 of a youtube video to an S3 bucket. Tension: I cannot get ytdl to create a stream with any data in it. Outcome: Right now nothing is getting pushed to the buffer or the s3 bucket.

TypeError: data.pipe is not a function — await client.send(new s3.GetObjectCommand(bucketParams)). Tension: I can see that it's saving it to disc, but it's an empty file and also not formatted correctly. Outcome: data.pipe(fs.createWriteStream('example.pdf')).

it is uploaded to the `S3 bucket`, but when checking the file's content, it is empty(blank file). — We have a S3 bucket where we upload some files. Tension: Everything is working fine, but getting blank documents in the S3 bucket. Outcome: it worked.

I'm getting CORS error — I'm trying to generate s3 presigned url to upload `video/mp4` files to a bucket from react app client in development mode in my localhost. Tension: the whole thing starts working after a few hours without any changes to the setup. Outcome: the presigned url stops giving cors error.

The specified copy source is larger than the maximum allowable size for a copy source: 5368709120 — I have a PHP file which copies backup files from one folder to another in Amazon S3 at the end of every day. Tension: I believe Amazon S3 requires Multi-part copying for files over that size. Outcome: I think that I now need the script to look at the size of each file and use Multi-part uploading if it finds a file over 5GB.

facing throttling issues (503 errors) — writing to S3, and facing throttling issues (503 errors). Tension: our ingestion service still encounters 503 errors. Outcome: the files are showing right under my bucket at the root level.

HTTPClientError: An HTTP Client raised an unhandled exception: sequence item 0: expected str instance, bytes found — save it into a S3 bucket. Tension: My issue is I have added a python `requests` layer which somehow messed with how Lambda send the object to s3 using https. Outcome: The error is gone if I remove the layer.

resulting in `/usr/local/bin/aws sh -c "aws s3 sync /build s3://${BUCKET_NAME} --delete"` — The docker image that you're using is built out of this Dockerfile which provides an `ENTRYPOINT`. Tension: These two parameters get combined. Outcome: which is not a valid AWS CLI command.

The AWS Lambda function is not being triggered when new files are uploaded to an S3 bucket. The configured S3 notification is set to respond to HTTP POST events, but no events occur and the code never runs.

when I test the Lambda function using the S3-put option. Outcome: This is not the expected result.

Directly putting objects from user input (`MemoryStream`) to an S3 object storage using Min.IO. Tension: Exception has occurred: CLR/Minio.Exceptions.UnexpectedShortReadException. Outcome: To solve the issue, we have to reset the pointer on our own before passing it to MinIO Client SDK.

Uploading to S3 via a presigned PUT URL does not apply the desired object tags even when the server-side PutObjectCommand includes the Tagging parameter.

continuously getting the error: TypeError: Failed To Fetch — I'm using the AWS SDK V3 in my Nextjs application to upload files to s3. Tension: I've previously had this working with no issue but when I changed my secret key on my user today. Outcome: Downgrading to @aws-sdk/client-s3@3.317.0 fixed the issue for me.

SSL validation failed for https://bucketname.s3.amazonaws.com/ [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate — when loading a file to S3 bucket. Tension: python not able to find certain certificates. Outcome: apply the following parameter when creating the s3 object.

Unit tests cannot deterministically simulate S3 upload failure

Minio upload with a stream blocks until the file stream is closed

AmazonS3Exception: The AWS Access Key Id you provided does not exist in our records

aws s3 ls s3://bucketname > out.txt does not efficiently export 10m S3 objects as file URLs

Accessing /admin in a NextJS app using the PayloadCMS S3Storage plugin fails with the error: "useUploadHandlers must be used within UploadHandlersProvider".

When calling s3.putObject, AWS SDK throws an error stating that the bucket must be addressed using the specified endpoint.

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