How To Solve Issues Related to Log – IO exception while trying to read

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Updated: Dec-19

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Log Context
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Troubleshooting background

To troubleshoot Elasticsearch log “IO exception while trying to read” it’s important to understand common problems related to Elasticsearch concepts: checks. See detailed explanations below 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 :

1 Elastic Search Is Not Coming Up Due  

2 Using Wsl2 Install Elasticsearch Ca    


Log Context

Log ”IO exception while trying to read [{}]” classname is BootstrapChecks.java
We have extracted the following from Elasticsearch source code to get 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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