[OAK-8600] [Direct Binary Access] Log exceptions at debug level for expected exceptions

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.18.0
• Component/s: blob-cloud, blob-cloud-azure
• Assignee: Matt Ryan
• Reporter: Matt Ryan
• Created: 06/Sep/19 00:00
• Updated: 30/Sep/19 07:35
• Resolved: 07/Sep/19 18:56

Description

Recent data store optimizations to reduce network API calls means a greater reliance on exception handling to minimize the number of calls, and catching thrown exceptions from these API calls (for example, calling a network API and handling a thrown exception for a missing blob instead of checking for blob existence first, then calling the other network API).
We need to change any logging of these issues to debug level, and/or change the log messages to avoid looking like there are problems or uncaught exceptions in the logs.