Ke Jia created SPARK-29893:
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Summary: Improve the local reader performance by changing the task
number from 1 to multi
Key: SPARK-29893
URL: https://issues.apache.org/jira/browse/SPARK-29893
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.0.0
Reporter: Ke Jia
The currently local reader read all the partition of map stage only using 1
task, which may cause the performance degradation. This PR will improve the
performance by using multi tasks instead of one task.
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