Failed to test query – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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

Log Context

Log “Failed to test query”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

}; e -> {
 Throwable unwrapped = ExceptionsHelper.unwrapCause(e);
 RestStatus status = unwrapped instanceof ElasticsearchException
 ? ((ElasticsearchException) unwrapped).status()
 listener.onFailure(new ElasticsearchStatusException("Failed to test query"; status; unwrapped));
 public void deduceMappings(Client client; SourceConfig sourceConfig; final ActionListener> listener) {
 SchemaUtil.deduceMappings(client; config; sourceConfig.getIndex(); listener);


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