XiDuo You created SPARK-37528:
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Summary: Support reorder tasks during scheduling by shuffle
partition size in AQE
Key: SPARK-37528
URL: https://issues.apache.org/jira/browse/SPARK-37528
Project: Spark
Issue Type: New Feature
Components: Spark Core, SQL
Affects Versions: 3.3.0
Reporter: XiDuo You
Reorder tasks by input size can save the whole stage execution time. Let's say
we have one stage with 4 tasks and the `defaultParallelism` is 2 and the 4
tasks have differnt execution time with [1s, 3s, 2s, 4s].
* in normal the execution time of the stage is: 7s
* after reorder the tasks, the execution time of the stage is: 5s
a new config `spark.scheduler.reorderTasks.enabled` to decide if we allow to
reorder tasks.
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