Stuck task
Elastic Cloud Hosted lets you manage and configure one or more deployments of the versioned Elastic Stack, hosted on Elastic Cloud. Availability This functionality is generally available and ready for production usage. Elastic Cloud on Kubernetes extends Kubernetes orchestration capabilities to allow you to deploy and manage components of the Elastic Stack. Availability This functionality is generally available and ready for production usage. This documentation corresponds to the latest patch available for each minor version. If you're not using the latest patch, check the release notes for changes. Elastic Cloud Enterprise is a self-managed orchestration platform for deploying and managing the Elastic Stack at scale. Availability This functionality is generally available and ready for production usage. This documentation corresponds to the latest patch available for each minor version. If you're not using the latest patch, check the release notes for changes. Self-managed deployments are Elastic Stack deployments managed without the assistance of an orchestrator. Availability This functionality is generally available and ready for production usage. This documentation corresponds to the latest patch available for each minor version. If you're not using the latest patch, check the release notes for changes.
ECH
Generally available
ECK
Generally available
ECE
Generally available
Self-managed
Generally available
One or more cluster tasks have run longer than your configured stuck-task threshold. Long reindex, update-by-query, delete-by-query, or snapshot work can be legitimate on large datasets, but tasks that never finish can hold cluster state and stress nodes.
For a complete list of insights, refer to AutoOps insights.
| Field | Value |
|---|---|
| Component | Elasticsearch |
| Severity | Medium |
| Scope | Node |
| Domains | performance, stability, tasks |
The following is an example of what you might see when this insight is triggered. Real insights use live data and links from your deployment or cluster.
There are 3 tasks that ran more than the 12 minutes threshold.
The longest task running start time was 2026-03-15T14:22:00 UTC time.
The longest task running time is 48 minutes.
AutoOps shows different recommendations depending on how their conditions match your deployment or cluster.
Cancel long-running tasks
Condition: Shown when cancellable.
Cancel long-running tasks (es-data-01:4521, es-data-02:7788) that are affecting cluster stability. Use the action below.
POST _tasks/es-data-01:4521, es-data-02:7788/_cancelRequires the manage cluster privilege. Requires Elasticsearch 8.0.0 or later. This action changes cluster or index configuration.
Fix non-cancellable stuck tasks
Condition: Shown when not cancellable.
Restart the nodes running the stuck tasks to clear them.
Elasticsearch tracks long-running work such as reindex, update-by-query, delete-by-query, and snapshot operations as cluster tasks. Large datasets or heavy resource use can legitimately extend runtime, but tasks that stop making progress hold cluster state and consume node resources.
Stuck tasks often follow shard assignment problems, repository or network issues during snapshots, or master node resource pressure. If they persist, cluster performance and stability can suffer until the underlying work completes or is cleared.