aws-sdk-js: Multipart upload failing after recover from retry

Confirm by changing [ ] to [x] below to ensure that it’s a bug:

• I’ve gone through Developer Guide and API reference
• I’ve checked AWS Forums and StackOverflow for answers
• I’ve searched for previous similar issues and didn’t find any solution

Describe the bug The upload() function fails after coming out of a retry state (e.g. triggered by network issues/oscillations) during a multipart upload process.

It seems that it never recovers from the retry state and new retry attempts keep coming up (on the previously failing parts) even after the conditions are good again (e.g. network is back).

My starting point was the Developer Guide: https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/s3-example-creating-buckets.html

Is the issue in the browser/Node.js? Node.js

If on Node.js, are you running this on AWS Lambda? No

Details of the browser/Node.js version 7.8.0

SDK version number 2.603.0

To Reproduce (observed behavior)

1. Upload a file big enough to get split and trigger a multipart upload (reproduced with a 380 MB file):

const AWS = require('aws-sdk');
const fs = require('fs');

const s3 = new AWS.S3();

s3.upload({
  Bucket: '...',
  Key: 'path_to_file',
  Body: fs.createReadStream('path_to_file')
}, ...);

1. Drop all outgoing packets to S3 (just targeting port 443 worked for me):

iptables -I OUTPUT -p tcp --dport 443 -j DROP

1. Wait for the retry process to get triggered a few times to get closer to its limit (maxRetries param)
2. Re-enable network:

iptables -D OUTPUT -p tcp --dport 443 -j DROP

1. Observe that new retry attempts keep getting triggered and upload does not complete. The following errors were observed:

• InvalidPart: One or more of the specified parts could not be found. The part may not have been uploaded, or the specified entity tag may not match the part's entity tag
• NoSuchKey: The specified key does not exist.
• NetworkingError: write EPIPE

Expected behavior The failing parts to be re-uploaded after conditions are good again (considering retry didn’t reach the maxRetries limit during the interruption).

As per documentation, I’m assuming multipart related failures should be handled automatically (as I’m sticking to the defaults):

leavePartsOnError (Boolean) — default: false — whether to abort the multipart upload if an error occurs. Set to true if you want to handle failures manually.

https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/S3/ManagedUpload.html#constructor-property

Screenshots n/a

Additional context n/a

This question was also posted on Gitter: https://gitter.im/aws/aws-sdk-js?at=5e29dca7dc07667042dd79de

Any help is much appreciated, thanks!