Exception during periodic field data cache cleanup: – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Exception during periodic field data cache cleanup: ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cache and indices.

Log Context

Log “Exception during periodic field data cache cleanup:” classname is IndicesService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                 logger.trace("running periodic field data cache cleanup");
            try {
            } catch (Exception e) {
                logger.warn("Exception during periodic field data cache cleanup:"; e);
            if (logger.isTraceEnabled()) {
                logger.trace("periodic field data cache cleanup finished in {} milliseconds";
                    TimeValue.nsecToMSec(System.nanoTime() - startTimeNS));


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