Error serialising DataCounts stats – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.5

Briefly, this error occurs when Elasticsearch encounters issues while trying to serialize the DataCounts statistics. This could be due to incompatible data types, corrupted data, or a bug in the Elasticsearch version you’re using. To resolve this, you can try the following: 1) Check the data types of your fields and ensure they are compatible with Elasticsearch’s serialization process. 2) Inspect your data for any corruption or anomalies that could be causing the serialization issue. 3) Update Elasticsearch to the latest version, as this could be a bug that has been fixed in a newer release.

This guide will help you check for common problems that cause the log ” [{}] Error serialising DataCounts stats ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “[{}] Error serialising DataCounts stats” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                public void onFailure(Exception e) {
        } catch (IOException ioe) {
            logger.warn((Supplier>)() -> new ParameterizedMessage("[{}] Error serialising DataCounts stats"; jobId); ioe);


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