[HDFS-13615] libhdfs++ SaslProtocol hanging while accessing invalid lock

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.2.0
• Assignee: Mitchell Tracy
• Reporter: Mitchell Tracy
• Created: 24/May/18 17:02
• Updated: 23/Aug/18 18:24
• Resolved: 07/Jun/18 20:04

Description

During certain race conditions, it is possible to have an asio thread that wakes up to process a response, but the RpcConnection to which this SaslProtocol belongs is dead.
This can happen as a result of the filesystem being destroyed in the middle of a sasl handshake.

Therefore, we should explicitly capture the RpcConnection in the lambda to ensure its existence when the SaslProtocol wakes up to process the server's response.