Adding data stream – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.7-7.1

Briefly, this error occurs when you’re trying to add a data stream in Elasticsearch but the operation fails. This could be due to various reasons such as incorrect syntax, insufficient permissions, or a non-existent index template. To resolve this issue, you can check and correct the syntax of your command, ensure that the user has the necessary permissions, or verify that the index template exists and is correctly configured. Additionally, ensure that the Elasticsearch version supports data streams, as this feature is available only from version 7.9 onwards.

This guide will help you check for common problems that cause the log ” adding data stream [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: metadata, cluster.

Log Context

Log “adding data stream [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

String fieldName = template.getDataStreamTemplate().getTimestampField();
        DataStream.TimestampField timestampField = new DataStream.TimestampField(fieldName);
        DataStream newDataStream = new DataStream(; timestampField;
        Metadata.Builder builder = Metadata.builder(currentState.metadata()).put(newDataStream);"adding data stream [{}]";;
        return ClusterState.builder(currentState).metadata(builder).build();

    public static ComposableIndexTemplate lookupTemplateForDataStream(String dataStreamName; Metadata metadata) {
        final String v2Template = MetadataIndexTemplateService.findV2Template(metadata; dataStreamName; false);


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