OnQueryPhase listener listener failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

Briefly, this error occurs when there’s a failure in the query phase of Elasticsearch due to issues like incorrect query syntax, resource overload, or network problems. To resolve this, you can check the query syntax for any errors and correct them. If the system is overloaded, consider optimizing your queries or increasing system resources. If it’s a network issue, check the connectivity between the nodes. Also, ensure that the Elasticsearch version is compatible with the client library.

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

Log Context

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

        public void onQueryPhase(SearchContext searchContext; long tookInNanos) {
            for (SearchOperationListener listener : listeners) {
                try {
                    listener.onQueryPhase(searchContext; tookInNanos);
                } catch (Exception e) {
                    logger.warn(() -> "onQueryPhase listener [" + listener + "] failed"; e);