[SPARK-34064][SQL] Cancel the running broadcast sub-jobs when SQL statement is cancelled#31227

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LantaoJin:SPARK-34064_NEW

Commits on Jan 18, 2021

[SPARK-34064][SQL] Cancel the running broadcast sub-jobs when SQL statement is cancelled
LantaoJin
committed
refactor to add a statementId only used in STS
LantaoJin
committed