Did you try just specifying dataDir=blah? I haven't tried this, but the notes for the collections API indicate they're "sugar" around core creation commands, see: http://wiki.apache.org/solr/CoreAdmin#CREATE
FWIW, Erick On Fri, Sep 6, 2013 at 4:23 PM, mike st. john <mstj...@gmail.com> wrote: > is there any way to change the dataDir while creating a collection via the > collection api? >