Failed to remove index – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch fails to delete an index due to issues like insufficient permissions, index being in use, or network connectivity problems. To resolve this, you can ensure the user has the necessary permissions to delete the index. If the index is in use, stop the processes using it before attempting deletion. For network issues, check the connectivity between the OpenSearch node and the client. Also, ensure the index name is correct and exists in the cluster.

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

Log Context

Log “failed to remove index {} ([{}][{}])” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            if (reason == IndexRemovalReason.DELETED) {
                // now we are done - try to wipe data on disk if possible
                deleteIndexStore(extraInfo; indexService.index(); indexSettings);
        } catch (Exception e) {
            logger.warn(() -> new ParameterizedMessage("failed to remove index {} ([{}][{}])"; index; reason; extraInfo); e);

    public IndicesFieldDataCache getIndicesFieldDataCache() {
        return indicesFieldDataCache;


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