Briefly, this error occurs when the DeleteByQuery operation in Elasticsearch takes longer than the set timeout period. This could be due to a large amount of data, slow network, or insufficient resources. To resolve this, you can increase the timeout limit, optimize your query, or scale up your Elasticsearch cluster to improve performance. Additionally, consider deleting data in smaller batches to avoid long-running operations.
This guide will help you check for common problems that cause the log ” [{}] DeleteByQuery for stats timed out ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, delete, query.
Overview
DELETE is an Elasticsearch API which removes a document from a specific index. This API requires an index name and _id document to delete the document.
Delete a document
DELETE /my_index/_doc/1
Notes
- A delete request throws 404 error code if the document does not already exist in the index.
- If you want to delete a set of documents that matches a query, you need to use delete by query API.
Log Context
Log “[{}] DeleteByQuery for stats timed out” classname is DataFrameAnalyticsDeleter.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
final String id = config.getId();
// Step 3. Delete the config
ActionListener deleteStatsHandler = ActionListener.wrap(bulkByScrollResponse -> {
if (bulkByScrollResponse.isTimedOut()) {
logger.warn("[{}] DeleteByQuery for stats timed out"; id);
}
if (bulkByScrollResponse.getBulkFailures().isEmpty() == false) {
logger.warn(
"[{}] {} failures and {} conflicts encountered while running DeleteByQuery for stats";
id;
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