Error while closing recovery output – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when Elasticsearch encounters an issue while trying to close the recovery output during the shard recovery process. This could be due to a network disruption, disk space issue, or a problem with the underlying file system. To resolve this issue, you can try the following: 1) Check and ensure there’s sufficient disk space. 2) Verify the network connectivity between the nodes. 3) Check the health of the underlying file system. 4) If the problem persists, consider restarting the Elasticsearch node.

This guide will help you check for common problems that cause the log ” error while closing recovery output [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: indices, recovery.

Log Context

Log “error while closing recovery output [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            Map.Entry entry =;
            logger.trace("closing IndexOutput file [{}]"; entry.getValue());
            try {
            } catch (Exception e) {
                logger.debug(() -> new ParameterizedMessage("error while closing recovery output [{}]"; entry.getValue()); e);
        if (Strings.hasText(tempFilePrefix)) {
            // trash temporary files