autoscale.workerVersion

Apache Druid Q&A Google Groups
#1

Hi,

I’m new to Druid, and I’m trying to understand the autoscaling related configs, specifically “autoscale.workerVersion”:

druid.indexer.autoscale.workerVersion
If set, will only create nodes of set version during autoscaling. Overrides dynamic configuration.

I don’t understand what this config does, what the description means, or what to set it to if I am in fact running index nodes in an auto scaling group on EC2. Can someone elaborate on this?

Thanks in advance.

BP

#2

Hi Brian,

The config doesn’t have anything to do with autoscaling groups and is in fact kind of an alternative to autoscaling groups. It’s part of Druid’s built-in autoscaling code, which currently only applies to its middleManager nodes. The overlord has an ability to create and terminate them in response to changing load conditions.

#3

Got it, thanks. Gian.