Watch history could not be written failure – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.4-7.15

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Briefly, this error occurs when Elasticsearch is unable to write to the watch history due to issues like insufficient disk space, incorrect permissions, or network connectivity problems. To resolve this, you can free up disk space, check and correct file permissions, or troubleshoot network issues. Additionally, ensure that the Elasticsearch cluster is properly configured and running smoothly. If the problem persists, consider checking the Elasticsearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” watch history could not be written {}; failure [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “watch history could not be written {}; failure [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        logger.error("triggered watches could not be deleted {}; failure [{}]";
                            triggeredFailures.keySet(); Strings.substring(failure; 0; 2000));
                    if (historyFailures.isEmpty() == false) {
                        String failure = historyFailures.values().stream().collect(Collectors.joining("; "));
                        logger.error("watch history could not be written {}; failure [{}]";
                            historyFailures.keySet(); Strings.substring(failure; 0; 2000));

                    Map overwrittenIds =


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