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Briefly, this error occurs when Elasticsearch is unable to find the score for a document during a search operation. This could be due to a misconfiguration in the scoring algorithm or an issue with the underlying data. To resolve this issue, you can try the following: 1) Check your scoring configuration to ensure it’s correctly set up. 2) Validate your data to ensure there are no inconsistencies or errors that could be causing the problem. 3) Re-index your data, as the issue might be due to a corrupted index.
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This guide will help you check for common problems that cause the log ” couldn’t lookup score ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “couldn’t lookup score” class name is AggregationScript.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
public Number get_score() {
try {
return scorer == null ? 0.0 : scorer.score();
} catch (IOException e) {
throw new ElasticsearchException("couldn't lookup score"; e);
}
} public Object get_value() {
return value;
