georgew5656 commented on code in PR #16510:
URL: https://github.com/apache/druid/pull/16510#discussion_r1626119628
##########
docs/development/extensions-contrib/k8s-jobs.md:
##########
@@ -217,6 +217,66 @@ data:
druid.peon.mode=remote
druid.indexer.task.encapsulatedTask=true
```
+#### Dynamic Pod Template Selection Config
+The Dynamic Pod Template Selection feature enhances the K8s extension by
enabling more flexible and dynamic selection of pod templates based on task
properties. This process is governed by the `ExecutionBehaviorStrategy`. Below
are the two strategies implemented:
+
+|Property|Description|Default|
+|--------|-----------|-------|
+|`DefaultExecutionBehaviorStrategy`| This strategy categorizes tasks based on
their type for execution purposes, implementing the existing behavior that maps
pod templates according to task type. | true |
+|`DynamicTaskExecutionBehaviorStrategy`| This strategy dynamically evaluates a
series of selectors, with each selector corresponding to a potential task
category.| false |
+
+`DynamicTaskExecutionBehaviorStrategy`, the strategy implementing this new
feature, is based on conditional selectors that match against task properties.
Conditions are specified in the dynamic config, and the selection process uses
these conditions to determine the category of a task based on context tags and
task fields. The identified category is then used to map to different Peon Pod
templates, allowing tailored resource allocation and management according to
the task’s requirements.
+
+Example Configuration:
+
+We define two categories in the configuration—`low-throughput` and
`medium-throughput`—each associated with specific task conditions.
+
+- Low Throughput Category: Tasks that have a context tag
`billingCategory=streaming_ingestion` and a datasource of `wikipedia` will be
classified under the `low-throughput` category. This classification directs
such tasks to utilize a predefined pod template optimized for low throughput
requirements.
Review Comment:
can we make it a bit more clear in the docs that the categorySelectors are
ordered, e.g. the first mapping has the highest priority?
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