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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SYSTEMML-2023) RDD collect of compressed matrix fails w/ NPE
Date Mon, 20 Nov 2017 06:40:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-2023?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm updated SYSTEMML-2023:
-------------------------------------
    Description: 
Any RDD collect of a compressed matrix with more than one block currently fails as follows
{code}
Caused by: java.lang.NullPointerException
	at org.apache.sysml.runtime.matrix.data.MatrixBlock.copySparseToDense(MatrixBlock.java:1576)
	at org.apache.sysml.runtime.matrix.data.MatrixBlock.copy(MatrixBlock.java:1485)
	at org.apache.sysml.runtime.controlprogram.context.SparkExecutionContext.toMatrixBlock(SparkExecutionContext.java:850)
	at org.apache.sysml.runtime.controlprogram.context.SparkExecutionContext.toMatrixBlock(SparkExecutionContext.java:776)
	at org.apache.sysml.runtime.controlprogram.caching.MatrixObject.readBlobFromRDD(MatrixObject.java:499)
	at org.apache.sysml.runtime.controlprogram.caching.MatrixObject.readBlobFromRDD(MatrixObject.java:1)
	at org.apache.sysml.runtime.controlprogram.caching.CacheableData.acquireRead(CacheableData.java:426)
	at org.apache.sysml.runtime.controlprogram.context.SparkExecutionContext.getBroadcastForVariable(SparkExecutionContext.java:544)
	at org.apache.sysml.runtime.instructions.spark.SpoofSPInstruction.processInstruction(SpoofSPInstruction.java:125)
	at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:264)
{code}

> RDD collect of compressed matrix fails w/ NPE
> ---------------------------------------------
>
>                 Key: SYSTEMML-2023
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2023
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>
> Any RDD collect of a compressed matrix with more than one block currently fails as follows
> {code}
> Caused by: java.lang.NullPointerException
> 	at org.apache.sysml.runtime.matrix.data.MatrixBlock.copySparseToDense(MatrixBlock.java:1576)
> 	at org.apache.sysml.runtime.matrix.data.MatrixBlock.copy(MatrixBlock.java:1485)
> 	at org.apache.sysml.runtime.controlprogram.context.SparkExecutionContext.toMatrixBlock(SparkExecutionContext.java:850)
> 	at org.apache.sysml.runtime.controlprogram.context.SparkExecutionContext.toMatrixBlock(SparkExecutionContext.java:776)
> 	at org.apache.sysml.runtime.controlprogram.caching.MatrixObject.readBlobFromRDD(MatrixObject.java:499)
> 	at org.apache.sysml.runtime.controlprogram.caching.MatrixObject.readBlobFromRDD(MatrixObject.java:1)
> 	at org.apache.sysml.runtime.controlprogram.caching.CacheableData.acquireRead(CacheableData.java:426)
> 	at org.apache.sysml.runtime.controlprogram.context.SparkExecutionContext.getBroadcastForVariable(SparkExecutionContext.java:544)
> 	at org.apache.sysml.runtime.instructions.spark.SpoofSPInstruction.processInstruction(SpoofSPInstruction.java:125)
> 	at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:264)
> {code}



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