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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 This means that the method or path is outdated and may not be supported in future versions of OpenSearch.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may involve checking the OpenSearch documentation for the latest versions, or updating your OpenSearch version if it’s outdated.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.
Overview
OpenSearch deprecation refers to processes and functions that are in the process of being eliminated and (possibly) replaced by newer ones.
Typically, a function will not disappear from one version to the next without warning. Normally this will happen across a number of versions. When you use a deprecated function in intermediate versions, it will continue to work as before, but you will receive warnings that the function in question is intended to disappear in the future.
How it works
There are a number of ways you can find out which functions have been deprecated, including: deprecation logs, reading the breaking pages documentation and paying attention to warnings.
In a deprecation log:
{"type": "deprecation", "timestamp": "2020-01-16T12:50:11,263+0000", "level": "WARN", "component": "o.e.d.r.a.d.RestDeleteAction", "cluster.name": "docker-cluster", "node.name": "es01", "cluster.uuid": "VGTYFgunQ_STTKVz6YHAGg", "node.id": "wh5J7TJ-RD-pJE4JOUjVpw", "message": "[types removal] Specifying types in document index requests is deprecated, use the typeless endpoints instead (/{index}/_doc/{id}, /{index}/_doc, or /{index}/_create/{id})." }Read the breaking changes documentation for each version (use the menu on the left to select the version you’d like to read about):
https://opensearch.org/docs/2.0/breaking-changes/
In OpenSearch Dashboards you may also see a warning if you run a deprecated command in the development panel:
#! Deprecation: [types removal] Specifying types in document index requests is deprecated, use the typeless endpoints instead (/{index}/_doc/{id}, /{index}/_doc, or /{index}/_create/{id}).It is important to act upon these warnings. Although your application still works, ignoring the warnings will almost certainly cause things to malfunction in a future upgrade.
Deprecation API
There is a depreciation API, which can help point you to deprecated functions on your cluster: GET /_migration/deprecations
However, you should never depend on the deprecation API alone. Just because the API returns with no issues, it does not mean that everything in your setup will work out of the box when migrating! This is to be used in addition to looking through the deprecation log and breaking changes documentation.
Notes and good things to know
It is important to visit ALL the breaking changes for each minor version between the version you are using and the version you want to upgrade to. Pay particular attention to the major version changes.
Opster supports all OpenSearch versions so If you need help reach out
Log Context
Log “Registering: ” + method + ” ” + path + ” with deprecation message ” classname is RestSendToExtensionAction.java.
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");
}
logger.info("Registering: " + method + " " + path + " with deprecation message " + message);
restActionsAsDeprecatedRoutes.add(new DeprecatedRoute(method; path; message));
}
this.deprecatedRoutes = unmodifiableList(restActionsAsDeprecatedRoutes);
this.discoveryExtensionNode = discoveryExtensionNode;
