Submitting request to migrate alias to a data stream – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.11-8.9

Briefly, this error occurs when you’re trying to migrate an alias to a data stream in Elasticsearch. This could be due to an incorrect configuration or a conflict with existing indices. To resolve this issue, ensure that the alias you’re trying to migrate doesn’t conflict with any existing indices. Also, check your Elasticsearch configuration to ensure it’s set up correctly for data stream migration. If the problem persists, consider deleting and recreating the alias or data stream.

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

Log Context

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

            .filter(x -> writeIndex == null || x.equals(writeIndex) == false)
            .map(x -> finalCurrentState.metadata().index(x))
            .toList();"submitting request to migrate alias [{}] to a data stream"; request.aliasName);
        CreateDataStreamClusterStateUpdateRequest req = new CreateDataStreamClusterStateUpdateRequest(request.aliasName);
        return createDataStream(


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