GitHub user ConeyLiu opened a pull request:
https://github.com/apache/spark/pull/19661
[SPARK-22450][Core][Mllib]safely register class for mllib
## What changes were proposed in this pull request?
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
## How was this patch tested?
New test case.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ConeyLiu/spark register_vector
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19661.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #19661
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commit 317229fabd7b470c8c349a4f12604ea22af0d27f
Author: Xianyang Liu <xianyang....@intel.com>
Date: 2017-11-06T02:40:55Z
safely register class for mllib
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