riakkv_list_keys_active.md 1.9 KB
Understand the alert
This alert indicates that currently there are active list keys operations in Finite State Machines (FSM) on your Riak KV database. Running list keys in Riak is a resource-intensive operation and can significantly affect the performance of the cluster, and it is not recommended for production use.
What are list keys operations in Riak?
List keys operations in Riak involve iterating through all keys in a bucket to return a list of keys. The reason this is expensive in terms of resources is that Riak needs to traverse the entire dataset to generate a list of keys. As the dataset grows, the operation consumes more resources and takes longer to process the list, which can lead to reduced performance and scalability.
Troubleshoot the alert
To address the riakkv_list_keys_active alert, follow these steps:
- Identify the processes and applications running
list keysoperations:
Monitor your application logs and identify the processes or applications that are using these operations. You may need to enable additional logging to capture information related to list keys.
- Evaluate the necessity of
list keysoperations:
Work with your development team and determine if there's a specific reason these operations are being used. If they are not necessary, consider replacing them with other, more efficient data retrieval techniques.
- Optimize data retrieval:
If it is necessary to retrieve keys in your application, consider using an alternative strategy such as Secondary Indexes (2i) or implementing a custom solution tailored to your specific use case.
- Monitor the system:
After making changes to your application, continue monitoring the active list key FSMs using Netdata to ensure that the number of active list keys operations is reduced.