Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18258#discussion_r121317516
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/HashAggregateExec.scala
---
@@ -313,7 +316,7 @@ case class HashAggregateExec(
TaskContext.get().taskMemoryManager(),
1024 * 16, // initial capacity
TaskContext.get().taskMemoryManager().pageSizeBytes,
- false // disable tracking of performance metrics
+ true // tracking of performance metrics
--- End diff --
Yeah, based on the benchmark, seems the performance degradation is not an
issue. We can completely remove this parameter.
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