zhaih commented on a change in pull request #157:
URL: https://github.com/apache/lucene/pull/157#discussion_r642115585
##########
File path:
lucene/analysis/common/src/java/org/apache/lucene/analysis/core/FlattenGraphFilter.java
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@@ -240,7 +252,13 @@ private boolean releaseBufferedToken() {
output.nextOut++;
if (output.nextOut == output.inputNodes.size()) {
outputFrom++;
- inputNodes.freeBefore(output.inputNodes.get(0));
+ int freeBefore = Collections.min(output.inputNodes);
+ assert outputNodes.get(outputFrom).inputNodes.stream()
+ .filter(n -> freeBefore < n)
+ .count()
+ > 0
+ : "FreeBefore " + output.inputNodes.get(0) + " will free in
use nodes";
Review comment:
Same question?
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