Expected to see throttled time filed but found nothing – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1.3-2.9

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Briefly, this error occurs when OpenSearch expects to find a ‘throttled_time’ field in the response but it’s missing. This could be due to a misconfiguration or a bug in the system. To resolve this issue, you can try the following: 1) Check your OpenSearch configuration to ensure it’s set up correctly. 2) Update your OpenSearch version to the latest one, as this could be a bug that’s been fixed in a newer version. 3) Review your queries or scripts to ensure they’re not causing the error. 4) If the error persists, consider reaching out to OpenSearch support for further assistance.

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This guide will help you check for common problems that cause the log ” Expected to see throttled_time filed but found nothing ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: monitor.

Log Context

Log “Expected to see throttled_time filed but found nothing” classname is OsProbe.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            if (numberOfTimesThrottled == -1) {
                logger.warn("Expected to see nr_throttled filed but found nothing");
            if (timeThrottledNanos == -1) {
                logger.warn("Expected to see throttled_time filed but found nothing");
        return new OsStats.Cgroup.CpuStat(numberOfPeriods; numberOfTimesThrottled; timeThrottledNanos);


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