Failed to read operation from translog – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to read an operation from the transaction log (translog). This could be due to corruption in the translog, disk I/O issues, or a bug in Elasticsearch. To resolve this issue, you can try to recover the translog, check for disk I/O issues, or upgrade Elasticsearch to the latest version. If the problem persists, you may need to reindex your data.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” failed to read operation 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 read operation from translog” class name is InternalEngine.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (operation != null) {
 return getFromTranslog(get; (Translog.Index) operation; mappingLookup; documentParser; searcherWrapper);
 }
 } catch (IOException e) {
 maybeFailEngine("realtime_get"; e); // lets check if the translog has failed with a tragic event
 throw new EngineException(shardId; "failed to read operation from translog"; e);
 }
 } else {
 trackTranslogLocation.set(true);
 // We need to start tracking translog locations in the live version map. Refresh and
 // serve all the real-time gets with a missing translog location from the internal searcher

 

How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?