Log Logger.warnerror; – How To Solve Related Issues

Log Logger.warnerror; – How To Solve Related Issues

Updated: April-20

Elasticsearch Version: 1.7-8.0


To resolve issues causing many log errors you can try our Elasticsearch Check-Up it analyses ES configuration to provide actionable recommendations (no installation required) 

To troubleshoot log “Logger.warnerror;” it’s important to understand a few problems related to Elasticsearch concepts bootstrap checks. See bellow important tips and explanations on these concepts


This log is related to a utility method in Bootstrap.java class for logging all the ignored errors at the warning level. For more information please refer to : https://github.com/elastic/elasticsearch/blob/7.6/server/src/main/java/org/elasticsearch/bootstrap/BootstrapChecks.java#L155 (ignored errors logged as warnings, not errors).

Log Context

Log”Logger.warn(error);” classname is BootstrapChecks.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             throw ne;

    static void log(final Logger logger; final String error) {

     * Tests if the checks should be enforced.

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Logger warning using Elasticsearch Java API

1.18 K 1

Github Issue Number 10421  


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