cfournie commented on code in PR #12249:
URL: https://github.com/apache/lucene/pull/12249#discussion_r1179529497
##########
lucene/core/src/test/org/apache/lucene/util/graph/TestGraphTokenStreamFiniteStrings.java:
##########
@@ -660,4 +661,27 @@ public void testMultipleSidePathsWithGaps() throws
Exception {
it.next(), new String[] {"king", "alfred", "saxons", "ruled"}, new
int[] {1, 1, 3, 1});
assertFalse(it.hasNext());
}
+
+ public void testLongTokenStreamStackOverflowError() throws Exception {
+ ArrayList<Token> tokens =
+ new ArrayList<Token>() {
+ {
+ add(token("turbo", 1, 1));
+ add(token("fast", 0, 2));
+ add(token("charged", 1, 1));
+ add(token("wi", 1, 1));
+ add(token("wifi", 0, 2));
+ add(token("fi", 1, 1));
+ }
+ };
+
+ // Add in too many tokens to get a high depth graph
+ for (int i = 0; i < 1024 * 10; i++) {
Review Comment:
On my machine values above 8k trigger a `StackOverflowError`, but
unfortunately this is JVM implementation and JVM setting dependent; if you set
a higher
[`-Xss`](https://docs.oracle.com/en/java/javase/11/tools/java.html#GUID-3B1CE181-CD30-4178-9602-230B800D4FAE)
you could stave off this `StackOverflowError` for more tokens.
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