What does the node health value in a Datastax node compose of?

All we need is an easy explanation of the problem, so here it is.

On a datastax Cluster (6.7.8) I can run:

nodetool node_health --all

This gives a list of values for the cluster with IP addresses and health values – eg

IP Address    Node Health
1.2.3.4       1.0
1.2.3.5       0.5

Where the list of health values are between 1 and 0.

But it’s not clear what this is telling you, when it is less that 1.0. I want another command to drill down into this value and find out all the things that make it up.

My question is: What does the node health value in a Datastax node compose of?

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

Searching for the phrase "What does the node health value in a Datastax node compose of?" brings back several links to Datastax documentation pages, which all say basically the same thing:

Node health is a score-based representation of how fit a node is to handle search queries. The node health composite score is based on dropped mutations and uptime. A higher score indicates better node health. Nodes that have a large number of dropped mutations and nodes that are just started have a lower health score.

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

Leave a Reply