DeleteByQuery for indices timed out jobId String join – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when the DeleteByQuery operation in Elasticsearch takes longer than the specified timeout period. This could be due to a large number of documents being processed or slow cluster performance. To resolve this issue, you can increase the timeout period for the operation, optimize your cluster performance, or reduce the number of documents being processed at once. Additionally, ensure that your Elasticsearch cluster has sufficient resources (CPU, memory, disk I/O) to handle the operation.

This guide will help you check for common problems that cause the log ” [{}] DeleteByQuery for indices [{}] timed out.”; jobId; String.join(“; ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: indices, delete, plugin, query.

Log Context

Log “[{}] DeleteByQuery for indices [{}] timed out.”; jobId; String.join(“; ” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        ActionListener dbqHandler = ActionListener.wrap(bulkByScrollResponse -> {
            if (bulkByScrollResponse == null) { // no action was taken by DBQ; assume indices were deleted
            } else {
                if (bulkByScrollResponse.isTimedOut()) {
                    logger.warn("[{}] DeleteByQuery for indices [{}] timed out."; jobId; String.join("; "; indexNames.get()));
                if (bulkByScrollResponse.getBulkFailures().isEmpty() == false) {
                        "[{}] {} failures and {} conflicts encountered while running DeleteByQuery on indices [{}].";


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