Failed to parse transform stats from search hit – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.5-8.9

Briefly, this error occurs when Elasticsearch is unable to parse the transformation statistics from the search hit. This could be due to incorrect data types, malformed JSON, or a mismatch between the expected and actual data structure. To resolve this issue, you can: 1) Check the data types of your fields and ensure they match the expected types. 2) Validate your JSON structure to ensure it’s correctly formatted. 3) Review the transformation statistics and ensure they align with the expected data structure.

This guide will help you check for common problems that cause the log ” failed to parse transform stats from search hit ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, search.

Log Context

Log “failed to parse transform stats from search hit” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 XContentParser parser = XContentFactory.xContent(XContentType.JSON)
 .createParser(NamedXContentRegistry.EMPTY; LoggingDeprecationHandler.INSTANCE; stream)
 ) {
 } catch (IOException e) {
 listener.onFailure(new ElasticsearchParseException("failed to parse transform stats from search hit"; e));