Izek Greenfield created SPARK-24831:
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Summary: Spark Executor class create new serializer each time
Key: SPARK-24831
URL: https://issues.apache.org/jira/browse/SPARK-24831
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 2.4.0
Reporter: Izek Greenfield
When I look in the code I find this line:
(org.apache.spark.executor.Executor: 319)
val resultSer = env.serializer.newInstance()
why not hold this in threadLocal and reuse?
[questioin in
stackOverflow|https://stackoverflow.com/questions/51298877/spark-executor-class-create-new-serializer-each-time]
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