Trino configurations

[ankitagupta122]

I am setting up trino (https://github.com/trinodb/charts/tree/main/charts/trino) using helm on k8s with the below configurations for coordinator and worker. When I am increasing load for pod autoscaling (min 2 and max 5 replicas, memory averageUtilization: 90%), the memory is getting stuck at 85%, post that it is neither increasing nor decreasing.

Coordinator:

config.properties: |
    coordinator=true
    node-scheduler.include-coordinator=false
    http-server.http.port=8080
    query.max-memory=25GB
    query.max-memory-per-node=8GB
    discovery-server.enabled=true
    discovery.uri=http://localhost:8080
node.properties: |
    node.environment=production
    node.data-dir=/data/trino
    plugin.dir=/usr/lib/trino/plugin
log.properties: |
    io.trino=INFO
jvm.config: |
    -server
    -Xmx28G
    -XX:+UseG1GC
    -XX:G1HeapRegionSize=32M
    -XX:+UseGCOverheadLimit
    -XX:+ExplicitGCInvokesConcurrent
    -XX:+HeapDumpOnOutOfMemoryError
    -XX:+ExitOnOutOfMemoryError
POD resources:
    limits:
      cpu: 1
      memory: 35Gi
    requests:
      cpu: 1
      memory: 35Gi

Worker:

config.properties: |
    coordinator=false
    http-server.http.port=8080
    query.max-memory=16GB
    query.max-memory-per-node=8GB
    discovery.uri=http://trino:8080
node.properties: |
    node.environment=production
    node.data-dir=/data/trino
    plugin.dir=/usr/lib/trino/plugin
log.properties: |
    io.trino=INFO
jvm.config: |
    -server
    -Xmx16G
    -XX:+UseG1GC
    -XX:G1HeapRegionSize=32M
    -XX:+UseGCOverheadLimit
    -XX:+ExplicitGCInvokesConcurrent
    -XX:+HeapDumpOnOutOfMemoryError
    -XX:+ExitOnOutOfMemoryError
POD resources:
    limits:
      cpu: 1
      memory: 20Gi
    requests:
      cpu: 1
      memory: 20Gi