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https://issues.apache.org/jira/browse/LUCENE-3298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13552323#comment-13552323
 ] 

Dawid Weiss commented on LUCENE-3298:
-------------------------------------

{code}
+  void finish(long startNode) throws IOException {
+    if (this.startNode != -1) {
+      throw new IllegalStateException("already finished");
+    }
     if (startNode == FINAL_END_NODE && emptyOutput != null) {
       startNode = 0;
     }
-    if (this.startNode != -1) {
-      throw new IllegalStateException("already finished");
-    }
{code}

Doesn't this change the logic of how it works? I also wonder about the perf. 
penalty this patch brings (on 64 systems mostly, but 32-bit JVMs will be most 
affected).

                
> FST has hard limit max size of 2.1 GB
> -------------------------------------
>
>                 Key: LUCENE-3298
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3298
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/FSTs
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Minor
>         Attachments: LUCENE-3298.patch, LUCENE-3298.patch, LUCENE-3298.patch, 
> LUCENE-3298.patch
>
>
> The FST uses a single contiguous byte[] under the hood, which in java is 
> indexed by int so we cannot grow this over Integer.MAX_VALUE.  It also 
> internally encodes references to this array as vInt.
> We could switch this to a paged byte[] and make the far larger.
> But I think this is low priority... I'm not going to work on it any time soon.

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