Wrapped DEK dekId is larger than expected – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.12-8.6

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 the Data Encryption Key (DEK) in Elasticsearch is larger than the expected size. This could be due to a configuration issue or a problem with the encryption process. To resolve this issue, you can try the following: 1) Check and correct the DEK configuration settings; 2) Verify the encryption process and ensure it’s working correctly; 3) If the problem persists, consider regenerating a new DEK and replacing the old one.

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 ” Wrapped DEK [” + dekId + “] is larger than expected ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repositories, plugin.

Log Context

Log “Wrapped DEK [” + dekId + “] is larger than expected” class name is EncryptedRepository.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 "Wrapped DEK [" + dekId + "] has smaller length [" + bytesRead + "] than expected"
 if (encryptedDEKInputStream.read() != -1) {
 throw new RepositoryException(repositoryName; "Wrapped DEK [" + dekId + "] is larger than expected");
 } catch (NoSuchFileException e) {
 // do NOT throw IOException when the DEK does not exist; as this is a decryption problem; and IOExceptions
 // can move the repository in the corrupted state
 throw new ElasticsearchException(


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?