Song Jun created SPARK-18742:
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Summary: readd spark.broadcast.factory for user-defined
BroadcastFactory
Key: SPARK-18742
URL: https://issues.apache.org/jira/browse/SPARK-18742
Project: Spark
Issue Type: Improvement
Components: Spark Core
Reporter: Song Jun
Priority: Minor
After SPARK-12588 Remove HTTPBroadcast [1], the one and only
implementation of BroadcastFactory is TorrentBroadcastFactory. No code
in Spark 2 uses BroadcastFactory (but TorrentBroadcastFactory) however
the scaladoc says [2]:
/**
* An interface for all the broadcast implementations in Spark (to allow
* multiple broadcast implementations). SparkContext uses a user-specified
* BroadcastFactory implementation to instantiate a particular broadcast for the
* entire Spark job.
*/
which is not correct since there is no way to plug in a custom
user-specified BroadcastFactory.
It is better to readd spark.broadcast.factory for user-defined BroadcastFactory
[1] https://issues.apache.org/jira/browse/SPARK-12588
[2]
https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/broadcast/BroadcastFactory.scala#L25-L30
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