Is there any way to delete app engine's useless datastore indexes

I made a lots of indexes for testing,is it gonna call any issue?then how to delete them? I aready delete them f开发者_如何学Crom my datastore-indexes.xml.

You need to use appcfg.py from the App Engine python SDK (yes, even if you're using Java; there's an open issue to correct this oversight) to remove indexes, with the vacuum_indexes option.