Unknown error when adding console ctrl handler – How to solve related issues

Average Read Time

2 Mins

Unknown error when adding console ctrl handler – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Unknown error when adding console ctrl handler ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: bootstrap and handler.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Unknown error {} when adding console ctrl handler” classname is JNANatives.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             try {
                boolean result = JNAKernel32Library.getInstance().addConsoleCtrlHandler(handler);
                if (result) {
                    logger.debug("console ctrl handler correctly set");
                } else {
                    logger.warn("unknown error {} when adding console ctrl handler"; Native.getLastError());
                }
            } catch (UnsatisfiedLinkError e) {
                // this will have already been logged by Kernel32Library; no need to repeat it
            }
        }




 

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