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From "Ashutosh Mestry (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ATLAS-2460) Data Migration: Moving Data from Earlier Versions of Atlas to Most Recent
Date Thu, 05 Apr 2018 05:44:00 GMT

     [ https://issues.apache.org/jira/browse/ATLAS-2460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Mestry updated ATLAS-2460:
-----------------------------------
    Attachment:     (was: ATLAS-2460-Migration-Using-GraphSON.patch)

> Data Migration: Moving Data from Earlier Versions of Atlas to Most Recent
> -------------------------------------------------------------------------
>
>                 Key: ATLAS-2460
>                 URL: https://issues.apache.org/jira/browse/ATLAS-2460
>             Project: Atlas
>          Issue Type: Improvement
>          Components:  atlas-core
>    Affects Versions: trunk
>            Reporter: Ashutosh Mestry
>            Assignee: Ashutosh Mestry
>            Priority: Major
>         Attachments: ATLAS-2460-GraphSON-Migration-5.patch
>
>
> *Background*
> The most recent version of Atlas uses _JanusGraph_ as database. Earlier versions used
to use _Titan v0.5.4_. The formats used for storing data have changed.
> The current version of Atlas also implement features within Atlas entities. This makes
the storages structures differ.
> A data migration approach thus becomes necessary to address the format incompatibilities.
> *Approach*
> Earlier version of Atlas could use _Export_ process to extract data out of the _Titan_
database. This ZIP file would then be moved to a cluster with newer version of Atlas installed.
An _Import_ process on the new cluster would update the new cluster with data migrated to
the new format.
> It should be possible for _Data Migration_ to be initiated from Ambari, so that it becomes
part of the Ambari's upgrade process.
> It should also be possible to see the status of the migration as it progresses. During
the process, no hook messages should be processed or any notifications sent out.



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