[FALCON-2104] Loss of data in GraphDB when upgrading Falcon from 0.9 to 0.10.

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.10
• Fix Version/s: trunk, 0.10
• Assignee: Balu Vellanki
• Reporter: Balu Vellanki
• Created: 29/Jul/16 20:58
• Updated: 02/Aug/16 22:31
• Resolved: 02/Aug/16 21:45

Description

FALCON-1333 (Instance Search feature) requires Falcon to use titan-berkeleyje version 0.5.4 to support indexing. Up until version 0.9 - Falcon used titan-berkeleyje-jre6 version 0.4.2. GraphDB created by version 0.4.2 cannot be read by version 0.5.4. When attempting an upgrade, I realized that entity and instance lineage data created in 0.9 version could not be read by Falcon in 0.10 version.

The only solution seems to provide a tool to do the following

• Use 0.4.2 version of titan-berkeleyje-jre6 to read the berkeleyDB based graphDB and create a JSON file with all data.
• shutdown falcon-0.9, upgrade Falcon.
• use 0.5.4 version of titan-berkeleyje to read JSON file and repopulate berkeleyDB based graphDB.
• restart falcon-0.10

I will work on the tool, and update release-notes, upgrade instructions accordingly.

Issue Links

• links to: GitHub Pull Request #253