Failed to sample – How to solve related issues

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Failed to sample – 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 can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Failed to sample ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: client.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Failed to sample” classname is TransportClientNodesService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                 nodesSampler.sample();
                if (!closed) {
                    nodesSamplerCancellable = threadPool.schedule(this; nodesSamplerInterval; ThreadPool.Names.GENERIC);
                }
            } catch (Exception e) {
                logger.warn("failed to sample"; e);
            }
        }
    }

    class SimpleNodeSampler extends NodeSampler {




 

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