Failed to recover from translog – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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

Briefly, this Elasticsearch error occurs when Elasticsearch is unable to recover a transaction log (translog) for a shard. The error indicates that the shard is unable to recover from its translog, which can lead to data loss and/or other issues with the index. To resolve this issue, you can try to recover the shard manually using the /_cluster/reroute API or perform a full cluster restart.

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 ” failed to recover from translog ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “failed to recover from translog”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

final long localCheckpoint = getProcessedLocalCheckpoint();
 if (localCheckpoint < recoverUpToSeqNo) {
 try (Translog.Snapshot snapshot = translog.newSnapshot(localCheckpoint + 1; recoverUpToSeqNo)) {
 opsRecovered =; snapshot);
 } catch (Exception e) {
 throw new EngineException(shardId; "failed to recover from translog"; e);
 } else {
 opsRecovered = 0;
 // flush if we recovered something or if we have references to older translogs


See how you can use AutoOps to resolve issues

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