Leading Wildcard Performance?


(ibivibiv) #1

I am currently evaluating multiple search/indexing solutions and the one thing I can't find any the mailing list or in any blogs/doc pages is improving leading wildcard query times. Several other implementations of API's on top of Lucene offer some different solutions (sometimes doing a forward and reverse index etc.) to improve query times. Is there something similar implemented in Elastic? Maybe something I missed in the index docs? I checked the settings there for things like storage but it is more about where and FS type settings. Nothing on how to implement anything like what I was looking for?


(ibivibiv) #2

It looks like I get about a 10 sec penalty if I do a query like:

_all:foo

over if I do the a query like this:

_all:foo* or even

_all:foo

Is this just the cost of doing a leading wildcard or is there a way around taking that performance hit?


(system) #3