Cannot notify file changes listener – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch is unable to notify a listener about changes in a file, possibly due to insufficient permissions or a faulty listener. To resolve this, you can try the following: 1) Check and adjust the file permissions to ensure OpenSearch has the necessary access. 2) Verify the listener’s functionality and fix any issues. 3) Restart the OpenSearch service to clear any temporary glitches. 4) Update OpenSearch to the latest version to fix any potential bugs causing this error.

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This guide will help you check for common problems that cause the log ” cannot notify file changes listener ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: .

Log Context

Log “cannot notify file changes listener” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                    } else {
                } catch (Exception e) {
                    logger.warn("cannot notify file changes listener"; e);

        private void onFileDeleted() {


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