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https://issues.apache.org/jira/browse/FALCON-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15400731#comment-15400731
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Balu Vellanki commented on FALCON-2104:
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[~sriksun] and [~venkatnrangan] : I could not find the planned migration tool
post 0.5.1, hence wrote the tool. I am testing the tool right now. The tool
depends on non-falcon jars and does not require Falcon to be up and running.
Should we package it with Falcon ? If yes, we need to cut RC2. If this tool can
be distributed separately as part of upgrade instructions, we can continue to
use RC1.
I propose distributing this separately, as it is only necessary for upgrade and
it not using any Falcon specific code. Please let me know your thoughts.
> Loss of data in GraphDB when upgrading Falcon from 0.9 to 0.10.
> ----------------------------------------------------------------
>
> 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
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> 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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