Bulk write of deprecation logs encountered some failures – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.14-8.9

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Briefly, this error occurs when Elasticsearch attempts to write deprecation logs in bulk but encounters issues, possibly due to insufficient disk space, network issues, or permission problems. To resolve this, you can first check if there’s enough disk space and network connectivity. If these are fine, check the permissions of the directory where logs are written. If the issue persists, consider reducing the bulk size or frequency of deprecation logs. Also, ensure that the Elasticsearch version is up-to-date as this could be a bug that’s fixed in a newer version.

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This guide will help you check for common problems that cause the log ” Bulk write of deprecation logs encountered some failures: [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, bulk, deprecation.

Log Context

Log “Bulk write of deprecation logs encountered some failures: [{}]” classname is DeprecationIndexingComponent.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            if (response.hasFailures()) {
                List failures = Arrays.stream(response.getItems())
                    .map(r -> r.getId() + " " + r.getFailureMessage())
                logger.error("Bulk write of deprecation logs encountered some failures: [{}]"; failures);

        public void afterBulk(long executionId; BulkRequest request; Exception failure) {


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