Failed to trim translog operations – 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 corruption, or a bug in Elasticsearch. To resolve this issue, you can try freeing up disk space, checking for file corruption, or upgrading Elasticsearch to the latest version. If the problem persists, consider reindexing your data or increasing the translog flush threshold size.

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

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


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