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[9.2] Initialize TermsEnum eagerly (#136279) #136291

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Oct 9, 2025
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[9.2] Initialize TermsEnum eagerly (#136279) #136291

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5 changes: 5 additions & 0 deletions docs/changelog/136279.yaml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
pr: 136279
summary: Initialize `TermsEnum` eagerly
area: Search
type: bug
issues: []
3 changes: 3 additions & 0 deletions server/src/main/java/org/elasticsearch/bootstrap/Elasticsearch.java
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Expand Up @@ -13,6 +13,7 @@
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.Configurator;
import org.apache.lucene.index.TermsEnum;
import org.apache.lucene.util.Constants;
import org.apache.lucene.util.StringHelper;
import org.apache.lucene.util.VectorUtil;
Expand Down Expand Up @@ -202,6 +203,8 @@ private static void initPhase2(Bootstrap bootstrap) throws IOException {
IfConfig.logIfNecessary();

ensureInitialized(
// See https://github.com/elastic/elasticsearch/issues/136268
TermsEnum.class,
// ReleaseVersions does nontrivial static initialization which should always succeed but load it now (before SM) to be sure
ReleaseVersions.class,
// ReferenceDocs class does nontrivial static initialization which should always succeed but load it now (before SM) to be sure
Expand Down