Ziqi Liu created SPARK-48628:
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Summary: Add task peak on/off heap execution memory metrics
Key: SPARK-48628
URL: https://issues.apache.org/jira/browse/SPARK-48628
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 4.0.0
Reporter: Ziqi Liu
Currently there is no task on/off heap execution memory metrics. There is a
[peakExecutionMemory|https://github.com/apache/spark/blob/3cd35f8cb6462051c621cf49de54b9c5692aae1d/core/src/main/scala/org/apache/spark/executor/TaskMetrics.scala#L114]
metrics, however, the semantic is a bit confusing: it only cover the
execution memory used by shuffle/join/aggregate/sort, which is accumulated in
specific operators.
We can easily maintain the whole task-level peak memory in TaskMemoryManager,
assuming *acquireExecutionMemory* is the only one narrow waist for acquiring
execution memory.
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