Registering method path with deprecation message – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.7-2.9

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Briefly, this error occurs when an OpenSearch method or path is being registered that has been deprecated. This means that the method or path is outdated and may not be supported in future versions of OpenSearch. To resolve this issue, you should update your code to use the latest methods and paths. This may involve checking the OpenSearch documentation for the latest versions, or updating your OpenSearch version if it’s outdated. Additionally, ensure that any plugins or extensions you’re using are compatible with the current version of OpenSearch.

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This guide will help you check for common problems that cause the log ” Registering: ” + method + ” ” + path + ” with deprecation message ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: deprecation, rest.

Log Context

Log “Registering: ” + method + ” ” + path + ” with deprecation message ” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                method = RestRequest.Method.valueOf(restAction.substring(0; delim));
                path = pathPrefix + restAction.substring(delim).trim();
            } catch (IndexOutOfBoundsException | IllegalArgumentException e) {
                throw new IllegalArgumentException(restAction + " does not begin with a valid REST method");
  "Registering: " + method + " " + path + " with deprecation message " + message);
            restActionsAsDeprecatedRoutes.add(new DeprecatedRoute(method; path; message));
        this.deprecatedRoutes = unmodifiableList(restActionsAsDeprecatedRoutes);

        this.discoveryExtensionNode = discoveryExtensionNode;


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