OnFreeScrollContext listener listener failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

Briefly, this error occurs when Elasticsearch encounters an issue while trying to free up resources associated with a scroll context. This could be due to a bug in the software, a network issue, or a problem with the underlying storage system. To resolve this issue, you could try updating Elasticsearch to the latest version, checking your network connections, or inspecting your storage system for any issues. Additionally, you could also try increasing the timeout value for scroll contexts if the error is occurring due to a timeout.

This guide will help you check for common problems that cause the log ” onFreeScrollContext listener [” + listener + “] failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: scroll, index, shard.

Log Context

Log “onFreeScrollContext listener [” + listener + “] failed” classname is SearchOperationListener.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        public void onFreeScrollContext(ReaderContext readerContext) {
            for (SearchOperationListener listener : listeners) {
                try {
                } catch (Exception e) {
                    logger.warn(() -> "onFreeScrollContext listener [" + listener + "] failed"; e);



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