ajithme edited a comment on issue #27267: [SPARK-30556][SQL] Copy sparkContext.localproperties to child thread inSubqueryExec.executionContext URL: https://github.com/apache/spark/pull/27267#issuecomment-576596746 > @ajithme why do we need to make sure all 16 threads are used? if not, the thread executing the subquery may be a new one ( created from pool,) thus inheriting the `localproperties` from `sparkContext` . This JIRA issue is reproduced only when pool threads are reused (within `keepAlive` time)
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