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

Opster Team

August-23, Version: 6.8-8.9

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.

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 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 {
 // 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


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