Malformed URL – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when the URL used to connect to the Elasticsearch server is incorrect or improperly formatted. This could be due to a typo, incorrect protocol, or missing necessary components like the port number. To resolve this issue, you should first verify the URL for any typos or missing parts. Ensure that the protocol (http or https) is correct. If you’re using a port number, make sure it’s included in the URL. Lastly, if you’re using a domain name, ensure it’s correctly resolved to the Elasticsearch server’s IP address.

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

Log Context

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

 public BlobContainer blobContainer(BlobPath blobPath) {
 try {
 return blobContainerFactory.apply(blobPath);
 } catch (MalformedURLException ex) {
 throw new BlobStoreException("malformed URL " + blobPath; ex);
 }  @Override
 public void close() {


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