Unable to parse the event – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.8-8.9

Briefly, this error occurs when Elasticsearch is unable to understand or process the data it has received, due to issues like incorrect data format, missing fields, or incompatible data types. To resolve this, ensure that the data being sent matches the expected format and data types. Check for missing or extra fields in the data. Also, validate the data before sending it to Elasticsearch. If the error persists, review your Elasticsearch mapping to ensure it aligns with the data structure.

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

Log Context

Log “Unable to parse the event.” class name is AnalyticsEventEmitter.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 listener.onResponse(new PostAnalyticsEventAction.DebugResponse(true; event));
 } else {
 } catch (IOException e) {
 listener.onFailure(new ElasticsearchException("Unable to parse the event."; e));
 } catch (EsRejectedExecutionException e) {
 new ElasticsearchStatusException("Unable to add the event: too many requests."; RestStatus.TOO_MANY_REQUESTS)


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