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Date: Sun, 31 Jul 2016 02:17:20 +0000 (UTC)
From: "Srikanth Sundarrajan (JIRA)" <jira@apache.org>
To: dev@falcon.incubator.apache.org
Message-ID: <JIRA.12993640.1469825931000.178801.1469931440598@Atlassian.JIRA>
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Subject: [jira] [Commented] (FALCON-2104) Loss of data in GraphDB when
 upgrading Falcon from 0.9 to 0.10.
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archived-at: Sun, 31 Jul 2016 02:17:25 -0000


    [ https://issues.apache.org/jira/browse/FALCON-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15400913#comment-15400913 ] 

Srikanth Sundarrajan commented on FALCON-2104:
----------------------------------------------

I dont know of a way to distribute this outside a release. I would think it is best shipped as a part of 0.10 release.

> 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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