Failed to trim 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 trim or reduce the size of the transaction log (translog). This could be due to insufficient disk space, file system issues, or a bug in Elasticsearch. To resolve this issue, you can try freeing up disk space, checking the file system for errors, or upgrading Elasticsearch to the latest version. If the problem persists, consider reindexing your data or increasing the size of your Elasticsearch cluster.

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

 try {
 failEngine("translog trimming failed"; e);
 } catch (Exception inner) {
 throw new EngineException(shardId; "failed to trim translog"; e);
 } finally {


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