Balu Vellanki created FALCON-2104:
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Summary: Loss of data in GraphDB when upgrading Falcon from 0.9 to
above.
Key: FALCON-2104
URL: https://issues.apache.org/jira/browse/FALCON-2104
Project: Falcon
Issue Type: Bug
Affects Versions: 0.10
Reporter: Balu Vellanki
Assignee: Balu Vellanki
Priority: Critical
Fix For: trunk, 0.10
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.
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