Reverting to snapshot – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.6-7.6

Briefly, this error occurs when Elasticsearch encounters an issue and needs to revert to a previous snapshot to restore data. This could be due to a variety of reasons such as a failed update, data corruption, or a system crash. To resolve this issue, you can ensure your system is stable and updates are successful. Regularly backup your data and verify the integrity of your snapshots. Also, monitor your Elasticsearch logs for any signs of issues that could lead to this error.

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

Log Context

Log “Reverting to snapshot ‘” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         AnomalyDetectorsIndex.createStateIndexAndAliasIfNecessary(client; state; createStateIndexListener);

    private void getModelSnapshot(RevertModelSnapshotAction.Request request; JobResultsProvider provider; Consumer handler;
                                  Consumer errorHandler) {"Reverting to snapshot '" + request.getSnapshotId() + "'");

        provider.getModelSnapshot(request.getJobId(); request.getSnapshotId(); modelSnapshot -> {
            if (modelSnapshot == null) {
                throw new ResourceNotFoundException(Messages.getMessage(Messages.REST_NO_SUCH_MODEL_SNAPSHOT; request.getSnapshotId();


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