Failed to close engine – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.2-2.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your OpenSearch operation.

Briefly, this error occurs when OpenSearch encounters an issue while trying to close an engine, which could be due to a variety of reasons such as disk issues, network problems, or bugs in the software. To resolve this, you can try restarting the OpenSearch node, checking the disk space and network connectivity, or updating to the latest version of OpenSearch. If the problem persists, consider checking the OpenSearch logs for more detailed error messages that can help pinpoint the exact issue.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” failed to close engine ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index.

Log Context

Log “failed to close engine” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                latestSegmentInfos.counter = latestSegmentInfos.counter + SI_COUNTER_INCREMENT;
                IOUtils.close(readerManager; translogManager; store::decRef);
            } catch (Exception e) {
                logger.warn("failed to close engine"; e);
            } finally {
                logger.debug("engine closed [{}]"; reason);


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch