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From "Michael McCandless (JIRA)" <>
Subject [jira] [Commented] (LUCENE-4593) clean up FST storage abstractions
Date Thu, 06 Dec 2012 15:53:10 GMT


Michael McCandless commented on LUCENE-4593:

+1, this is a good amoeba step!

I think this would be a useful abstraction.

Eg maybe we could write directly to disk ... or, improve the RAM buffering to use growing/appending/paged
buffers instead of one massive byte[] (which causes huge RAM spikes when we do ArrayUtil.grow)
... actually once we fix RAMFile it could just use that.
> clean up FST storage abstractions
> ---------------------------------
>                 Key: LUCENE-4593
>                 URL:
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>         Attachments: LUCENE-4593.patch
> I was looking at James patch for LUCENE-3298, and I thought that you know, FST *almost*
abstracts its underlying "i/o" (storage) via reader/writer abstractions.
> It would be good to try to work on this more, e.g. we can imagine a little abstraction
like lucene has a Store (Directory). 
> This way maybe we could cleanup the packed vs non-packed, allow for > 2GB fsts without
slowing down small ones, and so on.
> I have a patch that is like an amoeba-step towards this

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