Minimize Automaton used in APMTracer (elastic#113775)

This thing was taking up 400k of heap since it wasn't minimized, turns into ~2k after minimization.
cbuescher · Oct 2, 2024 · fca267e · fca267e
1 parent 35cdce5
commit fca267e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/modules/apm/src/main/java/org/elasticsearch/telemetry/apm/internal/tracing/APMTracer.java b/modules/apm/src/main/java/org/elasticsearch/telemetry/apm/internal/tracing/APMTracer.java
@@ -24,6 +24,7 @@
 import org.apache.lucene.util.automaton.Automata;
 import org.apache.lucene.util.automaton.Automaton;
 import org.apache.lucene.util.automaton.CharacterRunAutomaton;
+import org.apache.lucene.util.automaton.MinimizationOperations;
 import org.apache.lucene.util.automaton.Operations;
 import org.apache.lucene.util.automaton.RegExp;
 import org.elasticsearch.Build;
@@ -439,7 +440,7 @@ private static CharacterRunAutomaton buildAutomaton(List<String> includePatterns
             ? includeAutomaton
             : Operations.minus(includeAutomaton, excludeAutomaton, Operations.DEFAULT_DETERMINIZE_WORK_LIMIT);
 
-        return new CharacterRunAutomaton(finalAutomaton);
+        return new CharacterRunAutomaton(MinimizationOperations.minimize(finalAutomaton, Operations.DEFAULT_DETERMINIZE_WORK_LIMIT));
     }
 
     private static Automaton patternsToAutomaton(List<String> patterns) {