[MarkLogic Dev General] Pipeline questionandXDMP-CONFLICTINGUPDATES error

[Geert Josten]

Hi Tim,

Could it be that you are using pre-commit triggers? Then it could be that all updates are treated as part of a single transaction. If so, revert to post-commit triggers..

Kind regards,
Geert

>


Drs. G.P.H. Josten
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> From: general-bounces at developer.marklogic.com
> [mailto:general-bounces at developer.marklogic.com] On Behalf Of
> Tim Meagher
> Sent: zondag 15 november 2009 0:23
> To: 'General Mark Logic Developer Discussion'
> Subject: RE: [MarkLogic Dev General] Pipeline question
> andXDMP-CONFLICTINGUPDATES error
>
> I should also add that I have a delete trigger such that if
> doc B is deleted from /URI-2/B, then doc C is also deleted
> from /URI-3/C.
>
>
>
> - Tim
>
> ________________________________
>
> From: general-bounces at developer.marklogic.com
> [mailto:general-bounces at developer.marklogic.com] On Behalf Of
> Tim Meagher
> Sent: Saturday, November 14, 2009 2:50 PM
> To: 'General Mark Logic Developer Discussion'
> Subject: [MarkLogic Dev General] Pipeline question
> andXDMP-CONFLICTINGUPDATES error
>
>
>
> Hi Folks,
>
>
>
> In have researched previous postings that indicate that the
> XDMP-CONFLICTINGUPDATES error can be related to deleting and
> updating a document, but I'm wondering if it can also be
> related to a document being processed by multiple pipelines.
>
>
>
> I have 2 pipelines, P1 and P2.  P1 works like this:
>
>
>
> When doc A is inserted into /URI-1/A, it triggers P1 which
> creates doc B and inserts it into /URI-2/B.
>
>
>
> When doc B is inserted into /URI-2/B, it triggers P2 which
> creates doc C and inserts it into /URI-3/C.  The last thing
> that P2 does is to delete doc A from /URI-1/A.
>
>
>
> Note that /URI-1/A and /URI-2/B are in the same database, but
> /URI-3/C gets inserted into a different database via using
> xdmp:invoke.
>
>
>
> Also note that the error only occurs when doc A is inserted
> into /URI-1/A for the first time, even though both pipelines
> are configured to run when either new or updated are
> inserted.  Subsequent updates do not appear to be causing the
> XDMP-CONFLICTINGUPDATES error.  I addition, the
> XDMP-CONFLICTINGUPDATES error does not occur for all
> documents, but maybe only 5% of the docs that are inserted.
>
>
>
> So my question is, is it possible that there can be a race
> condition between P1 and P2 in that P1 has completed
> inserting B into the database which triggers P2 before P1 has
> fully updated the status of the document B?
>
>
>
> Thank you!
>
>
>
> Tim Meagher
>
>
>
>