Failed to recover file from snapshot – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.15-7.15

Briefly, this error occurs when Elasticsearch is unable to restore a file from a snapshot due to issues like insufficient disk space, corrupted snapshot, or network connectivity problems. To resolve this, you can try freeing up disk space, checking the integrity of the snapshot, or ensuring stable network connectivity. If the snapshot is corrupted, you might need to create a new snapshot and try restoring from it.

This guide will help you check for common problems that cause the log ” failed to recover file [{}] from snapshot; ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: recovery, indices.

Log Context

Log “failed to recover file [{}] from snapshot; ” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        onRequestCompletion(snapshotFileToRecover.metadata(); null);

                    public void onFailure(Exception e) {
                        logger.warn(new ParameterizedMessage("failed to recover file [{}] from snapshot; " +
                            "will recover from primary instead"; snapshotFileToRecover.metadata()); e);
                        onRequestCompletion(snapshotFileToRecover.metadata(); e);


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