Translog header truncated – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when the translog file in Elasticsearch, which records changes that haven’t been committed to the index yet, is corrupted or incomplete. This can happen due to abrupt system shutdown or disk failures. To resolve this issue, you can try to recover the translog. If that doesn’t work, you may need to delete the corrupted translog files. However, be aware that this could result in data loss. Always ensure to have a backup and consider using a high disk watermark to prevent disk space issues.

This guide will help you check for common problems that cause the log ” translog header truncated ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “translog header truncated” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  return new TranslogHeader(translogUUID; primaryTerm; headerSizeInBytes);
 } catch (EOFException e) {
 throw new TranslogCorruptedException(path.toString(); "translog header truncated"; e);
 }  private static final byte[] TRANSLOG_HEADER;


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