[ATLAS-3057] Index Repair Tool: Add JanusGraph-Specific Index Repair Tool

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0, trunk
• Assignee: Nikhil P Bonte
• Reporter: Ashutosh Mestry
• Created: 22/Feb/19 20:33
• Updated: 18/Feb/22 17:36
• Resolved: 13/Mar/19 08:52

Description

Background

For Atlas version that uses HBase and Solr, occasionally if Solr is down and entities get created, then there is no record of the created entities within Solr. Basic search does not indicate presence of such entities.

Solution

Index Repair Tool (which was present in branch-0.8) should be implemented for JanusGraph.

Implementation Guidance

• Create Java-based implementation rather than Groovy script that needs graphdb-specific shell to be installed. 
• Use JanusGraph APIs for restore instead of custom per-vertex logic.
• Investigate possibility of using MapReduce for higher throughput.

Issue Links

• depends upon: ATLAS-2657 re-indexing solr in Atlas
• links to: Review request