Briefly, this error occurs when Elasticsearch is unable to analyze a specific field in the data. This could be due to incorrect analyzer settings, incompatible data types, or a malformed query. To resolve this issue, you can check the analyzer settings and ensure they are correct for the data type. If the data type is the issue, you may need to reindex your data with the correct mapping. If the query is malformed, you should correct it. Also, ensure that the field you’re trying to analyze actually exists in your index.
This guide will help you check for common problems that cause the log ” failed to analyze ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: admin, indices.
Log Context
Log “failed to analyze” class name is TransportAnalyzeAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
lastPosition += posIncr.getPositionIncrement(); lastPosition += analyzer.getPositionIncrementGap(request.field());
lastOffset += analyzer.getOffsetGap(request.field());
} catch (IOException e) {
throw new ElasticsearchException("failed to analyze"; e);
}
}
return tokens;
}
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