Failed to create river – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Failed to create river ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “failed to create river [{}][{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            client.prepareIndex(riverIndexName;; "_status")
        } catch (Exception e) {
            logger.warn("failed to create river [{}][{}]"; e; riverName.type();;

            try {
                XContentBuilder builder = XContentFactory.jsonBuilder().startObject();
                builder.field("error"; ExceptionsHelper.detailedMessage(e));


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