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From "Venkat Ranganathan (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (FALCON-2104) Loss of data in GraphDB when upgrading Falcon from 0.9 to 0.10.
Date Tue, 02 Aug 2016 22:31:20 GMT

    [ https://issues.apache.org/jira/browse/FALCON-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15401548#comment-15401548
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Venkat Ranganathan edited comment on FALCON-2104 at 8/2/16 10:31 PM:
---------------------------------------------------------------------

Please make any changes to the  utility  if needed -  I kept it as a tool with import and
export without needing the REST API as we would like this best  done with Falcon server shutdown



was (Author: venkatnrangan):
Please make any changes to the  utility  if needed -  I kept it as a tool with import and
export without needing the REST API as we would like this is best  done with Falcon server
shutdown 

> 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
>
>         Attachments: FALCON-2104.patch-v0.10, FALCON-2104.patch-v0.9
>
>   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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