Logger info logEntryBuilder toString – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-6.8

Briefly, this error occurs when there’s an issue with the logging system of Elasticsearch. It’s trying to convert an infologEntryBuilder object to a string and failing. This could be due to a malformed log entry or a problem with the logging configuration. To resolve this, you can check your logging settings and ensure they are correctly configured. Also, inspect your recent log entries for any anomalies or malformed entries. If the problem persists, consider resetting your logging configuration to its default state.

This guide will help you check for common problems that cause the log ” Logger.info(logEntryBuilder.toString()); ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Logger.info(logEntryBuilder.toString());” classname is DeprecatedLoggingAuditTrail.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                final String opaqueId = threadContext.getHeader(Task.X_OPAQUE_ID);
                if (opaqueId != null) {
                    logEntryBuilder.append("; opaque_id=[").append(opaqueId).append("]");



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