DownloadDBLogFilePortion often fails

[mjdaly]

DownloadDBLogFilePortion often fails with error This file contains binary data and should be downloaded instead of viewed.

Support recommend using DownloadCompleteDBLogFile.

Expected Behavior

DownloadCompleteDBLogFile method can be called from AmazonRDSClient

Current Behavior

DownloadDBLogFilePortion can fail due to:

1. too many API calls
2. binary data in file.

Possible Solution

Add DownloadCompleteDBLogFile method to AmazonRDSClient

Your Environment

• AWSSDK.Core version used: 3.3.2
• Service assembly and version used: 3.3.2
• Operating System and version: Win 10
• Visual Studio version: 2017
• Targeted .NET platform: .NET Core 2.0

[sstevenkang]

What's the exception or error message you get?

[mjdaly]

Error Message

This file contains binary data and should be downloaded instead of viewed.

I don't have a full stack trace from the production log.

This error has been documented multiple times on other API wrappers:

• Unable to download RDS log files that contain binary data aws-cli#2400
• Example for downloading full RDS log doesn't actually work aws-cli#2268
• botocore | RDS | downloadlogfile doesn't work ometimes have problem with processing specific log files, for example if log file contain non printable sign  boto/botocore#910
• https://stackoverflow.com/a/37051952/1057567

[sstevenkang]

This looks like a service side problem. I would open a support ticket against RDS. I don't think there's a whole lot we can do in the SDK.