Unexpected error while releasing pipelined http responses – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Unexpected error while releasing pipelined http responses ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: handler.

Log Context

Log “Unexpected error while releasing pipelined http responses” classname is HttpPipeliningHandler.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             while ((pipelinedResponse = holdingQueue.poll()) != null) {
                try {
                    pipelinedResponse.release();
                    pipelinedResponse.promise().setFailure(closedChannelException);
                } catch (Exception e) {
                    logger.error("unexpected error while releasing pipelined http responses"; e);
                }
            }
        }
        ctx.close(promise);
    }




 

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