How To Solve Issues Related to Log – Dropping a warning header; as their total count reached the maximum allowed of [

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Troubleshooting background

To troubleshoot Elasticsearch log “Dropping a warning header; as their total count reached the maximum allowed of [” it’s important to know common problems related to Elasticsearch concepts: thread. See below-detailed explanations complete with common problems, examples and useful tips.


To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

Nx Upload Client Max Body Size Issu
stackoverflow.com/questions/4947107/nginx-upload-client-max-body-size-issue

 

ElasticSearch: Unassigned Shards, how to fix?
stackoverflow.com/questions/19967472/elasticsearch-unassigned-shards-how-to-fix

Number of Views : 203.11 K  Score on Stackoverflow : 152


Log Context

Log ”Dropping a warning header; as their total count reached the maximum allowed of [“ classname is ThreadContext.java
We have extracted the following from Elasticsearch source code to get an in-depth context :

 
            //check if we can add another warning header - if max count within limits
            if ((key.equals("Warning")) && (maxWarningHeaderCount != -1)) { //if count is NOT unbounded; check its limits
                final int warningHeaderCount = newResponseHeaders.containsKey("Warning") ? newResponseHeaders.get("Warning").size() : 0;
                if (warningHeaderCount > maxWarningHeaderCount) {
                    logger.warn("Dropping a warning header; as their total count reached the maximum allowed of ["
                            + maxWarningHeaderCount + "] set in ["
                            + HttpTransportSettings.SETTING_HTTP_MAX_WARNING_HEADER_COUNT.getKey() + "]!");
                    return this;
                }
            }






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