[Mondrian] Heavy SqlMemberSource.getMemberChildren evaluation

Sherman Wood swood at jaspersoft.com
Tue Jun 2 18:49:02 EDT 2009

It is getting the values for the degenerate dimension. It should only get
this once.


-----Original Message-----
From: mondrian-bounces at pentaho.org [mailto:mondrian-bounces at pentaho.org]
On Behalf Of Pedro Alves
Sent: Wednesday, June 03, 2009 5:00 AM
To: Mondrian Mailing List
Subject: [Mondrian] Heavy SqlMemberSource.getMemberChildren evaluation

Hello again.

While implementing agg tables in my dashboards and trying to make this
over 5 billion rows queries light speed, I stumbled upon a very weird

Mondrian is doing the following query:

    2009-06-02 19:49:50,649 DEBUG [mondrian.rolap.RolapUtil]
    SqlMemberSource.getMemberChildren: done executing sql [select 
        "blocklist_requests_by_day"."gecko_version" as "c0"
        "blocklist_requests_by_day" as "blocklist_requests_by_day"
    group by 
    order by 
        "blocklist_requests_by_day"."gecko_version" ASC
    ], exec+fetch 21993 ms, 425 rows

This is a degenerated dimension, so it's kind'a expected; but the thing is
that I'm not using this dimension in *any* query I'm doing.

Any idea why mondrian is doing this?


Pedro Alves

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