Semantic text highlighter throws NPE in certain scenarios #128975
Description
Elasticsearch Version
main
Installed Plugins
No response
Java Version
bundled
OS Version
any
Problem Description
When executing a semantic text highlight, NPEs have been observed, Here is the trace:
org.elasticsearch.search.fetch.FetchPhaseExecutionException: Fetch Failed [Error running fetch phase for doc [697596]] at org.elasticsearch.search.fetch.FetchPhaseDocsIterator.iterate(FetchPhaseDocsIterator.java:105) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.search.fetch.FetchPhase.buildSearchHits(FetchPhase.java:194) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.search.fetch.FetchPhase.execute(FetchPhase.java:84) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.search.SearchService.executeFetchPhase(SearchService.java:863) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.search.SearchService.executeQueryPhase(SearchService.java:800) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.search.SearchService.lambda$executeQueryPhase$5(SearchService.java:656) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.action.ActionRunnable$3.accept(ActionRunnable.java:79) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.action.ActionRunnable$3.accept(ActionRunnable.java:76) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.action.ActionRunnable$4.doRun(ActionRunnable.java:101) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:27) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.common.util.concurrent.TimedRunnable.doRun(TimedRunnable.java:34) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:1044) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:27) ~[elasticsearch-8.18.1.jar:?] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) ~[?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) ~[?:?] at java.lang.Thread.run(Thread.java:1447) ~[?:?] Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.lucene.search.Scorer.iterator()" because "scorer" is null at org.elasticsearch.xpack.inference.highlight.SemanticTextHighlighter.extractOffsetAndScores(SemanticTextHighlighter.java:212) ~[?:?] at org.elasticsearch.xpack.inference.highlight.SemanticTextHighlighter.highlight(SemanticTextHighlighter.java:103) ~[?:?] at org.elasticsearch.search.fetch.subphase.highlight.HighlightPhase$1.process(HighlightPhase.java:70) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.search.fetch.FetchPhase$1.nextDoc(FetchPhase.java:182) ~[elasticsearch-8.18.1.jar:?] at org.elasticsearch.search.fetch.FetchPhaseDocsIterator.iterate(FetchPhaseDocsIterator.java:89) ~[elasticsearch-8.18.1.jar:?] ... 15 more Steps to Reproduce
TBD
Logs (if relevant)
No response