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 being processed, slow network, or insufficient resources. To resolve this issue, you can increase the timeout period, optimize your query to make it more efficient, or scale up your Elasticsearch cluster to provide more resources. Additionally, consider breaking down your query into smaller parts to reduce the load on the system.
This guide will help you check for common problems that cause the log ” [{}] DeleteByQuery for state 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 state timed out” classname is DataFrameAnalyticsDeleter.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
});
// Step 2. Delete job docs from stats index
ActionListener deleteStateHandler = ActionListener.wrap(bulkByScrollResponse -> {
if (bulkByScrollResponse.isTimedOut()) {
logger.warn("[{}] DeleteByQuery for state timed out"; id);
}
if (bulkByScrollResponse.getBulkFailures().isEmpty() == false) {
logger.warn(
"[{}] {} failures and {} conflicts encountered while running DeleteByQuery for state";
id;
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