Removing data stream – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch is trying to remove a data stream that doesn’t exist or is already deleted. This could be due to a misconfiguration or a timing issue. To resolve this, ensure that the data stream you’re trying to remove actually exists. If it does, check if there are any processes that might be deleting the data stream before OpenSearch tries to remove it. Also, verify your OpenSearch configurations and make sure they are correct. If the issue persists, consider restarting your OpenSearch instance.

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

Log Context

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

            // (this to avoid data stream validation from failing when deleting an index that is part of a data stream
            // without updating the data stream)
            // TODO: change order when delete index api also updates the data stream the index to be removed is member of
            Metadata.Builder metadata = Metadata.builder(currentState.metadata());
            for (String ds : dataStreams) {
      "removing data stream [{}]"; ds);
            currentState = ClusterState.builder(currentState).metadata(metadata).build();
            return deleteIndexService.deleteIndices(currentState; backingIndicesToRemove);


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