[IPT] can IPT2 handle big datasets?

Kyle Braak (GBIF) kbraak at gbif.org
Thu Apr 7 17:41:45 CEST 2011

Dear IPT mailing list,

This afternoon we conducted a little test to see whether the IPT2 can  
handle publishing a big dataset from a database.

In the test we used a MySQL database, and successfully generated an  
archive with 24.000.000 records in about 50 minutes! This was run on a  
Tomcat server with 256MB memory.


Previously IPT1 had serious problems with such large datasets, but  
during IPT2 development special care was taken to be ensure that they  
could be handled gracefully. The way it is done now, is that the  
result sets from the database are streamed to the file system where  
they are written (about a 1000 records per result set) so there is no  
memory burden at all. This is one of the reasons why the IPT2 is not  
as feature rich as the IPT1 was.

Best wishes,

Kyle Braak
Global Biodiversity Information Facility Secretariat
Universitetsparken 15, DK-2100 Copenhagen, Denmark
Tel: +45-35321479 Fax: +45-35321480
URL: http://www.gbif.org

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