Why is my TPC-DS SQL query running slower with Auron compared to native Spark?

[Dormant7]

For example, when running TPC-DS (1TB) query 6, it took 500 seconds with Spark 3.4.1 + Auron, but only 60 seconds with native Spark 3.4.1.Many other SQL queries show the same behavior.

Spark on k8s , this is my base config:
spark.memory.offHeap.enabled false
spark.executor.memoryOverhead 4096
spark.executor.memory 4g
spark.executor.cores 4
spark.memory.fraction 0.6

What could be the cause? 3q