Shivaram Venkataraman created SPARK-4030:
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Summary: `destroy` method in Broadcast should be public
Key: SPARK-4030
URL: https://issues.apache.org/jira/browse/SPARK-4030
Project: Spark
Issue Type: Bug
Components: Block Manager, Spark Core
Affects Versions: 1.1.0, 1.2.0
Reporter: Shivaram Venkataraman
The destroy method in Broadcast.scala
[https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/broadcast/Broadcast.scala#L91]
is right now marked as private[spark]
This prevents long-running applications from cleaning up memory used by
broadcast variables on the driver. Also as broadcast variables are always
created with persistence MEMORY_DISK, this slows down jobs when old broadcast
variables are flushed to disk.
Making `destroy` public can help applications control the lifetime.
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