[ 
https://issues.apache.org/jira/browse/SPARK-23422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Gabor Somogyi updated SPARK-23422:
----------------------------------
    Description: 
YarnShuffleIntegrationSuite fails when SPARK_PREPEND_CLASSES set to 1.

Normally mllib built before yarn module. When SPARK_PREPEND_CLASSES used mllib 
classes are on yarn test classpath.

Before 2.3 that did not cause issues. But 2.3 has SPARK-22450, which registered 
some mllib classes with the kryo serializer. Now it dies with the following 
error:
{code:java}
18/02/13 07:33:29 INFO SparkContext: Starting job: collect at 
YarnShuffleIntegrationSuite.scala:143
Exception in thread "dag-scheduler-event-loop" java.lang.NoClassDefFoundError: 
breeze/linalg/DenseMatrix
{code}

  was:
YarnShuffleIntegrationSuite fails when SPARK_PREPEND_CLASSES set to 1.

Normally mllib built before yarn module. When SPARK_PREPEND_CLASSES used mllib 
classes are on yarn test classpath.

Before 2.3 that did not cause issues. But 2.3 has SPARK-22450, which
registered some mllib classes with the kryo serializer. Now it dies with the 
following error:
{code:java}
18/02/13 07:33:29 INFO SparkContext: Starting job: collect at 
YarnShuffleIntegrationSuite.scala:143
Exception in thread "dag-scheduler-event-loop" java.lang.NoClassDefFoundError: 
breeze/linalg/DenseMatrix
{code}


> YarnShuffleIntegrationSuite failure when SPARK_PREPEND_CLASSES set to 1
> -----------------------------------------------------------------------
>
>                 Key: SPARK-23422
>                 URL: https://issues.apache.org/jira/browse/SPARK-23422
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 2.3.0
>            Reporter: Gabor Somogyi
>            Priority: Minor
>
> YarnShuffleIntegrationSuite fails when SPARK_PREPEND_CLASSES set to 1.
> Normally mllib built before yarn module. When SPARK_PREPEND_CLASSES used 
> mllib classes are on yarn test classpath.
> Before 2.3 that did not cause issues. But 2.3 has SPARK-22450, which 
> registered some mllib classes with the kryo serializer. Now it dies with the 
> following error:
> {code:java}
> 18/02/13 07:33:29 INFO SparkContext: Starting job: collect at 
> YarnShuffleIntegrationSuite.scala:143
> Exception in thread "dag-scheduler-event-loop" 
> java.lang.NoClassDefFoundError: breeze/linalg/DenseMatrix
> {code}



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