[ATLAS-3315] AtlasGraphProvider: Allow for Creation of JanusGraph DB Connection Initialized with Batch Loading Enabled

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0, 2.0.0
• Fix Version/s: 2.1.0, 3.0.0, 1.3.0
• Component/s: atlas-core
• Assignee: Ashutosh Mestry
• Reporter: Ashutosh Mestry
• Created: 03/Jul/19 19:32
• Updated: 13/Jul/19 17:38
• Resolved: 13/Jul/19 17:38

Description

Description

Case where JanusGraphFactory.open throws an exception, the initialization goes into an infinite loop.

Expected Behavior: The exception should be logged and initialization should exit.

Actual Behavior: Initialization goes into an infinite loop.

Root cause:

1. If JanusGraphFactory.open encounters errors, we log it and proceed with construction of AtlasJanusGraphDatabase.
2. The ctor of AtlasJanusGraphDatabase calls getInstance which goes back to step 1.

 Solution

Handle exception and log, initialize AtlasJanusGraphDatabase only on successful completion of JanusGraphFactory.open.