[jira] [Updated] (ATLAS-1527) Batch entity retrievals in DefaultMetadataService.loadEntities

["Madhan Neethiraj (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ATLAS-1527?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Madhan Neethiraj updated ATLAS-1527:
------------------------------------
    Fix Version/s: 0.8-incubating
      Component/s:  atlas-core

Committed to master: http://git-wip-us.apache.org/repos/asf/atlas/commit/1e105174

> Batch entity retrievals in DefaultMetadataService.loadEntities
> --------------------------------------------------------------
>
>                 Key: ATLAS-1527
>                 URL: https://issues.apache.org/jira/browse/ATLAS-1527
>             Project: Atlas
>          Issue Type: Improvement
>          Components:  atlas-core
>            Reporter: Wojciech Wojcik
>            Assignee: Wojciech Wojcik
>            Priority: Minor
>             Fix For: 0.8-incubating
>
>         Attachments: rb56324.patch
>
>
> DefaultMetadataService.loadEntities() is called at the conclusion of entity creation and update, to load the created/updated entities which are passed to the EntityChangeListener's. The entities are being loaded one at time, because MetadataRepository does not expose a method to retrieve multiple entities by GUID. MetadataRepository can be enhanced to provide a getEntityDefinitions() entrypoint, and the implementation in GraphBackedMetadataRepository can batch the vertex retrievals using GraphHelper.getVerticesForGUIDs(). This will reduce the graph calls to retrieve the vertices.



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