Ashutosh Mestry created ATLAS-2460:
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Summary: Data Migration: Moving Data from Earlier Versions of
Atlas to be Migrated 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
*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.
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