Failed to close shard – How to solve related issues

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Failed to close shard – 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 close shard ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: index and shard.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

{{mpg_logstarted}}

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

                 final Set shardIds = shardIds();
                for (final int shardId : shardIds) {
                    try {
                        removeShard(shardId; reason);
                    } catch (Exception e) {
                        logger.warn("failed to close shard"; e);
                    }
                }
            } finally {
                IOUtils.close(
                        bitsetFilterCache;




 

Run the Check-Up to get a customized report like this:

Analyze your cluster