Xianyang Liu created SPARK-22450:
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Summary: Safely register class for mllib
Key: SPARK-22450
URL: https://issues.apache.org/jira/browse/SPARK-22450
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 2.2.0
Reporter: Xianyang Liu
There are still some algorithms based on mllib, such as KMeans. For now, many
mllib common class (such as: Vector, DenseVector, SparseVector, Matrix,
DenseMatrix, SparseMatrix) are not registered in Kryo. So there are some
performance issues for those object serialization or deserialization.
Previously dicussed: https://github.com/apache/spark/pull/19586
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