Failed to close file – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

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 Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to close a file, possibly due to insufficient permissions, a locked file, or a system resource issue. To resolve this, you can try the following: 1) Check and adjust the file permissions to ensure Elasticsearch has the necessary access. 2) Identify and close any processes that may be locking the file. 3) Check system resources to ensure there’s enough disk space and memory. 4) Restart the Elasticsearch service. Always ensure to back up your data before making any changes.

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 [” + file + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, cache.

Log Context

Log “Failed to close [” + file + “]” classname is CacheFile.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        protected void closeInternal() {
            try {
                fileChannel.close();
            } catch (IOException e) {
                // nothing to do but log failures here since closeInternal could be called from anywhere and must not throw
                logger.warn(() -> "Failed to close [" + file + "]"; e);
            } finally {
                decrementRefCount();
            }
        }
    }

 

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?