: unexpected trailing characters found – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

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

Log Context

Log “: unexpected trailing characters found [{}]”classname  is Intervals.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

startToken = endToken;
 if (endToken <= string.length() - 1) {
 throw new ParsingException(source; invalidIntervalMessage(string) + ": unexpected trailing characters found [{}]";
 TemporalAmount interval = units.get(0) == TimeUnit.YEAR || units.get(0) == TimeUnit.MONTH ? Period.ZERO : Duration.ZERO;


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