IO exception while trying to read – How to solve related issues

Opster Team

Dec-19, 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 ” IO exception while trying to read ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: checks.

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 “IO exception while trying to read [{}]” classname is BootstrapChecks.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     } catch (final NumberFormatException e) {
                        logger.warn(() -> new ParameterizedMessage("unable to parse vm.max_map_count [{}]"; rawProcSysVmMaxMapCount); e);
                    }
                }
            } catch (final IOException e) {
                logger.warn(() -> new ParameterizedMessage("I/O exception while trying to read [{}]"; path); e);
            }
            return -1;
        }

        
SuppressForbidden(reason = "access /proc/sys/vm/max_map_count")

 

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