[jira] [Commented] (JENA-729) DELETE WHERE uses excessive stack

["Andy Seaborne (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JENA-729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14043357#comment-14043357 ] 

Andy Seaborne commented on JENA-729:
------------------------------------

The large WERE clause (10k triples in the example) causes a 10k long chain of triple matches.

An improvement would be special case exact matching (i.e grounded triples) and convert to a block of adjacent grounded triples to do a fast "contains" check.

> DELETE WHERE uses excessive stack
> ---------------------------------
>
>                 Key: JENA-729
>                 URL: https://issues.apache.org/jira/browse/JENA-729
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: ARQ
>    Affects Versions: Jena 2.11.2
>            Reporter: Andy Seaborne
>            Priority: Minor
>         Attachments: J729-update-delete-where.ru
>
>
> DELETE WHERE with a lot of data (and no variables), uses excessive stack.
> Reproduce with the attached file:
> {noformat}
> arq.update --file J729-update-delete-where.ru
> {noformat}



--
This message was sent by Atlassian JIRA
(v6.2#6252)