Hi, It means that there are alternatives to using exploding indexes (i.e. they are no longer required to execute a given query). You can still have them (there are cases where they are useful, namely to optimize query speed over write cost) and the SDK will still suggest them in many cases (as it is hard to detect them by looking at the query). However, the SDK will no long suggest indexes with the same property repeated multiple times (as these are obviously an exploding index).
One example where this is very important is SearchableModel<http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/ext/search/__init__.py>, which previously was crippled by exploding indexes if you tried to sort results (and now works as expected). We are working on an article that goes through how to decided when to remove or keep them, but for now the Google IO talk from 2010, Next Gen Queries<http://www.google.com/events/io/2010/sessions/next-gen-queries-appengine.html> (The "Zigzag Merge Join += Sort" part), is a good resource if you want a really deep dive on how this works. - Alfred On Tue, Jul 12, 2011 at 2:24 AM, Pascal Voitot Dev < pascal.voitot....@gmail.com> wrote: > exactly the same question ;) > > On Tue, Jul 12, 2011 at 11:21 AM, Max <thebb...@gmail.com> wrote: > >> Great job! >> >> May I know more about *t**he datastore now never requires an exploding >> index*? >> >> Does that mean we don't need to build exploding index or simply can't >> build exploding index? >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/google-appengine/-/KyL9f70-VtkJ. >> >> To post to this group, send email to google-appengine@googlegroups.com. >> To unsubscribe from this group, send email to >> google-appengine+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
