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https://issues.apache.org/jira/browse/LUCENE-4678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13550488#comment-13550488
 ] 

Dawid Weiss commented on LUCENE-4678:
-------------------------------------

This looks very cool! I looked at the patch briefly but I need to apply it to 
make sense of the whole picture. :) 
{code}
+              while(skip > 0) {
+                buffer.writeByte((byte) 0);
+                skip--;
+              }
{code}

this doesn't look particularly efficient but I didn't get the context where 
it's actually used from the patch so maybe it's all right.
                
> FST should use paged byte[] instead of single contiguous byte[]
> ---------------------------------------------------------------
>
>                 Key: LUCENE-4678
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4678
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/FSTs
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 4.2, 5.0
>
>         Attachments: LUCENE-4678.patch, LUCENE-4678.patch
>
>
> The single byte[] we use today has several limitations, eg it limits us to < 
> 2.1 GB FSTs (and suggesters in the wild are getting close to this limit), and 
> it causes big RAM spikes during building when a the array has to grow.
> I took basically the same approach as LUCENE-3298, but I want to break out 
> this patch separately from changing all int -> long for > 2.1 GB support.

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