Error while attempting to bulk index documents: – 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.

Briefly, this error occurs when there is an issue with indexing documents in bulk, and one or more shards have failed. This could be due to an issue with the data being indexed, or an issue with the shard itself. To resolve this issue, you can try to reformat the data being indexed, or check the shard for 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 ” Error while attempting to bulk index documents: ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: bulk, index, indexer, indexing and plugin.

Log Context

Log “Error while attempting to bulk index documents:” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            doNextBulk(bulkRequest; ActionListener.wrap(bulkResponse -> {
                // TODO we should check items in the response and move after accordingly to
                // resume the failing buckets ?
                if (bulkResponse.hasFailures()) {
                    logger.warn("Error while attempting to bulk index documents: " + bulkResponse.buildFailureMessage());
                if (checkState(getState()) == false) {


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