Shixiong Zhu created SPARK-28976:
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Summary: Use KeyLock to simplify MapOutputTracker.getStatuses
Key: SPARK-28976
URL: https://issues.apache.org/jira/browse/SPARK-28976
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.0.0
Reporter: Shixiong Zhu
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