Joseph Su created SPARK-2897:
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Summary: org.apache.spark.broadcast.TorrentBroadcast does use the
serializer class specified in the spark option "spark.serializer"
Key: SPARK-2897
URL: https://issues.apache.org/jira/browse/SPARK-2897
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.0.2, 1.1.0
Reporter: Joseph Su
HTTPBroadcast will changes the serializer according to the setting in
"spark.serializer".
However, TorrentBroadcast does not read that option. It always uses Java
built-in serializer. ( Specifically, it uses
org.apache.spark.util.Utils.serialize() and
org.apache.spark.util.Utils.deserialize() ).
With TorrentBroadcast, Spark programs can not broadcast objects that can be
serialized with custom Kryo serializer but not with Java built-in serializer.
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