Could not parse schedule could not parse as a duration – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when Elasticsearch is unable to parse a specific schedule or duration due to incorrect formatting or syntax. This could be in a cron expression or a time unit. To resolve this issue, ensure that the schedule or duration is correctly formatted according to Elasticsearch’s guidelines. For instance, a cron expression should be in the format of ‘minute hour day month weekday’. For durations, use the correct time unit such as ‘s’ for seconds, ‘m’ for minutes, ‘h’ for hours, ‘d’ for days.

This guide will help you check for common problems that cause the log ” could not parse [{}] schedule. could not parse [{}] as a [{}] duration ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “could not parse [{}] schedule. could not parse [{}] as a [{}] duration” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 assert value.endsWith(suffix);
 String num = value.substring(0; value.indexOf(suffix));
 try {
 return Long.parseLong(num);
 } catch (NumberFormatException nfe) {
 throw new ElasticsearchParseException("could not parse [{}] schedule. could not parse [{}] as a [{}] duration";
 TYPE; num; name().toLowerCase(Locale.ROOT));
 }  public String format(long duration) {