[jira] [Commented] (NIFI-40) Implement Provenance Query Language -- requires refactoring of Prov Repo API / Implementations

["Pierre Villard (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-40?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094931#comment-16094931 ] 

Pierre Villard commented on NIFI-40:
------------------------------------

[~markap14] - I see that commits have been merged into the following branch:
https://github.com/apache/nifi/tree/prov-query-language

Is it still relevant? Should this JIRA (and branch) should be closed?

> Implement Provenance Query Language -- requires refactoring of Prov Repo API / Implementations
> ----------------------------------------------------------------------------------------------
>
>                 Key: NIFI-40
>                 URL: https://issues.apache.org/jira/browse/NIFI-40
>             Project: Apache NiFi
>          Issue Type: New Feature
>          Components: Core Framework
>            Reporter: Mark Payne
>
> Prov Repo should return a StoredProvenanceRecord object that provides a StorageLocation object and the Prov Record itself. This StorageLocation is a marker interface; specific Prov Repo can create their own implementations to lookup records. Attempt to lookup by Location will throw IllegalArgumentException if Location is not valid for that repo.
> Compared to existing Persistent Prov Repo, also will need to make compression better/seekable, or reading the records will take far too long to be very usable.



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