Failed to snapshot 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 snapshot shard ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: shards, snapshot and snapshots.

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 snapshot shard” classname is SnapshotShardsService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     snapshot(indexShard; snapshot; indexId; shardEntry.getValue());
                }

                
Override
                public void onFailure(Exception e) {
                    logger.warn(() -> new ParameterizedMessage("[{}][{}] failed to snapshot shard"; shardId; snapshot); e);
                    failure.set(e);
                }

                
Override
                public void onRejection(Exception e) {


 

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