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From Michael McCandless <>
Subject Re: AnalyzingInfixSuggester questions
Date Thu, 14 Aug 2014 21:48:01 GMT
I think we should expose commit?  Can you open an issue?

And fix the NPEs to be a more informative exc?  E.g.
IllegalStateException w/ a reasonable message ...

You should be able to init AIS on a previously built suggester, not
.build() it every time your application starts...

Mike McCandless

On Thu, Aug 14, 2014 at 10:50 AM, Michael Sokolov
<> wrote:
> I've been using AIS, and I see that it now has support for incremental
> updates, which is great! I'm looking forward to getting suggestions from
> newly-added documents without the need to rebuild the entire suggester
> index. I've run into a few problems though, and I want to see if there is a
> better way to use it, or if not, suggest some possible improvements.
> One issue is that AIS can be in an uninitialized state where some of its
> methods throw NPE.  For example, if you call add(), update(), or getCount()
> before calling build(), NPE is thrown. One might say: well just don't do
> that! But the only alternative I can see is to call whenever
> your application starts.  I've worked around this by extending AIS and
> calling build (with an empty InputIterator) in the constructor if I see that
> there is no index yet. Maybe AIS would benefit from that?
> The other question I have is how to commit() the AIS index: the writer is
> not exposed, and there only seems to be a refresh() method, but no commit():
> I guess I can close() the suggester and make a new one, but that somehow
> seems more heavyweight. Why do I want to commit explicitly? Well, maybe I
> don't need to, but somehow I feel like I should, occasionally.
> -Mike
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