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Posted to dev@atlas.apache.org by "Srikanth Venkat (JIRA)" <ji...@apache.org> on 2018/05/23 02:36:00 UTC
[jira] [Assigned] (ATLAS-2694) Avro schema typedef and support for
Avro schema evolution in Atlas
[ https://issues.apache.org/jira/browse/ATLAS-2694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Srikanth Venkat reassigned ATLAS-2694:
--------------------------------------
Assignee: Barbara Eckman
> Avro schema typedef and support for Avro schema evolution in Atlas
> -------------------------------------------------------------------
>
> Key: ATLAS-2694
> URL: https://issues.apache.org/jira/browse/ATLAS-2694
> Project: Atlas
> Issue Type: New Feature
> Components: atlas-core
> Reporter: Srikanth Venkat
> Assignee: Barbara Eckman
> Priority: Critical
>
> Currently the base types in Atlas do not include Avro schemas. It would be nice to add typedef for Avro schema and any associated metadata to support schema evolution.
> * For example, Avro_schema type supports:
> ** All avro types, both primitive and complex, including union types, as fields of schema
> ** All types have doc strings and defaults
> ** A field of a schema can be another schema
> ** Indefinite nesting of records, arrays.
> ** Associated entities array attribute contains pointers to all datasets that reflect the avro schema
> ** Fully expanded avroNotation for use in serDe
> ** Schema evolution features such as isLatest (Boolean) and version number
> * Schema evolution Process
> ** Input: avro schema
> ** Output: new version of avro schema
> ** Compatibility: FULL, BACKWARD, FORWARD, NONE
> ** IsBreakingChange (Boolean): does the change produce an incompatible schema? (ie its compatibility is not “FULL”)
> * Atlas UI enhancement for JSON-valued attributes to support avro schema and avro schema evolution
> ** Currently JSON-valued attributes are fully displayed in-line with other attributes, not pretty-printed, cluttering the display. To support a better display, we can display JSON-valued attributes in a one-line box that can be scrolled down, or fully expanded with a mouse click that pretty-prints the JSON.
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