Log high disk watermark [90%] exceeded on – How To Solve Related Issues



Log high disk watermark [90%] exceeded on – How To Solve Related Issues

Opster Team

Feb-20, Version: 1.7-8.0

 

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many log errors (free and no installation required)

 

This guide will help you check for common problems that cause the log “high disk watermark [90%] exceeded on” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: threshold and watermarks.


Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log “Elasticsearch high disk watermark [90%] exceeded on” classname is DiskThresholdDecider.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                                     entry; DiskThresholdDecider.this.rerouteInterval);
                        }
                    }
                }
                if (reroute) {
                    logger.info("high disk watermark exceeded on one or more nodes; rerouting shards");
                    // Execute an empty reroute; but don't block on the response
                    client.admin().cluster().prepareReroute().execute();
                }
            }
        }









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