Collector timed out when collecting data – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch takes too long to collect data, exceeding the set timeout limit. This could be due to heavy data load, slow network, or inefficient queries. To resolve this, you can increase the timeout limit, optimize your queries for efficiency, or scale up your Elasticsearch cluster to handle larger data loads. Additionally, ensure your network connection is stable and fast enough to handle the data transfer.

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This guide will help you check for common problems that cause the log ” collector [{}] timed out when collecting data: {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “collector [{}] timed out when collecting data: {}” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            if (shouldCollect(isElectedMaster)) {
                logger.trace("collector [{}] - collecting data..."; name());
                return doCollect(convertNode(timestamp; clusterService.localNode()); interval; clusterState);
        } catch (ElasticsearchTimeoutException e) {
            logger.error("collector [{}] timed out when collecting data: {}"; name(); e.getMessage());
        } catch (Exception e) {
            logger.error((Supplier>) () -> "collector [" + name() + "] failed to collect data"; e);
        return null;


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