Opster Team
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 ” Timed out getting mappings ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: admin, indices, rest.

Log Context
Log “Timed out getting mappings”classname is RestGetMappingAction.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :
} @Override public XContentBuilder toXContent(XContentBuilder builder; Params params) throws IOException { if (relativeTimeSupplierMillis.getAsLong() - startTimeMs > timeout.millis()) { throw new ElasticsearchTimeoutException("Timed out getting mappings"); } builder.startObject(); response.toXContent(builder; params); builder.endObject();
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Arpit Ghiya
Senior Lead SRE at Coupa