mikemccand commented on PR #12738:
URL: https://github.com/apache/lucene/pull/12738#issuecomment-1790333126
Thanks @dungba88 -- I will review!
But first I tried running `IndexToFST` (recently born helper tool, now in
luceneutil) on a `wikimediumall` index, creating the FST from all of its `body`
field terms, but hit this exciting doozie:
```
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index
-1 out of bounds for length 350
at
org.apache.lucene.util.ByteBlockPool.readBytes(ByteBlockPool.java:250)
at
org.apache.lucene.util.fst.NodeHash$PagedGrowableHash.getBytes(NodeHash.java:248)
at org.apache.lucene.util.fst.NodeHash.add(NodeHash.java:121)
at
org.apache.lucene.util.fst.FSTCompiler.compileNode(FSTCompiler.java:294)
at
org.apache.lucene.util.fst.FSTCompiler.freezeTail(FSTCompiler.java:702)
at org.apache.lucene.util.fst.FSTCompiler.add(FSTCompiler.java:776)
at IndexToFST.main(IndexToFST.java:65)
```
Seems like a `lastFallbackNodeLength` was -1 (node not found in fallback)
sort of situation? Not sure...
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