Reynold Xin created SPARK-3027:
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Summary: Tighten the visibility of fields in TaskContext and
provide Java friendly callback API
Key: SPARK-3027
URL: https://issues.apache.org/jira/browse/SPARK-3027
Project: Spark
Issue Type: Improvement
Components: Spark Core
Reporter: Reynold Xin
Assignee: Reynold Xin
TaskContext suffers from two problems:
1. The callback API accepts a Scala closure and is not Java friendly.
2. interrupted, completed are public vars, which means users can randomly
change the control flow of tasks.
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