Adding to new blacklisted methods – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 1.7-1.7

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Briefly, this error occurs when Elasticsearch attempts to add a method to its blacklist, which is a list of methods that are prohibited from being used due to potential security risks or performance issues. This could be due to a deprecated method or a method that is causing issues in the system. To resolve this issue, you can either stop using the blacklisted method in your queries or replace it with a safer or more efficient alternative. Additionally, ensure your Elasticsearch version is up-to-date as some methods may be blacklisted in older versions but allowed in newer ones.

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This guide will help you check for common problems that cause the log ” adding {} to [{}]; new blacklisted methods: {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: thread.

Log Context

Log “adding {} to [{}]; new blacklisted methods: {}” classname is ScriptService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             GroovyScriptEngineService engine = (GroovyScriptEngineService) ScriptService.this.scriptEnginesByLang.get(GroovyScriptEngineService.NAME);
            if (engine != null) {
                String[] patches = settings.getAsArray(GroovyScriptEngineService.GROOVY_SCRIPT_BLACKLIST_PATCH; Strings.EMPTY_ARRAY);
                boolean blacklistChanged = engine.addToBlacklist(patches);
                if (blacklistChanged) {
                    logger.info("adding {} to [{}]; new blacklisted methods: {}"; patches;
                            GroovyScriptEngineService.GROOVY_SCRIPT_BLACKLIST_PATCH; engine.blacklistAdditions());
                    engine.reloadConfig();
                    // Because the GroovyScriptEngineService knows nothing about the
                    // cache; we need to clear it here if the setting changes
                    ScriptService.this.clearCache();




 

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