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From Yakov Zhdanov <yzhda...@apache.org>
Subject Re: How a new index is built in runtime?
Date Thu, 17 Aug 2017 20:47:21 GMT
Denis, you are absolutely right. Iterating through millions of objects is
indeed a very complex task. Ignite casts a secret spell instead.

--Yakov

2017-08-17 21:26 GMT+01:00 Denis Magda <dmagda@apache.org>:

> Alex P., Vladimir,
>
> Having CREATE INDEX command we can define indexes in runtime. However,
> it’s unclear how a new index is built.
>
> Let’s imagine I have a field “name” that was in Person’s model for a while
> and there are millions of such objects in the cluster. Now I turned the
> field into the index in runtime. How Ignite is going to built the index? Do
> we iterate over the millions of objects with the field in background or at
> the time of the CREATE INDEX execution blocking the latter? Or is there
> more sophisticated process?
>
> —
> Denis

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