Xiangrui Meng created SPARK-3459:
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Summary: MulticlassMetrics is not serializable
Key: SPARK-3459
URL: https://issues.apache.org/jira/browse/SPARK-3459
Project: Spark
Issue Type: Bug
Components: MLlib
Reporter: Xiangrui Meng
Some task closures contains member variables and hence have reference to
itself, which causes task not serializable exception on a real cluster.
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