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https://issues.apache.org/jira/browse/SYSTEMML-2419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16534950#comment-16534950
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LI Guobao edited comment on SYSTEMML-2419 at 7/6/18 3:07 PM:
-------------------------------------------------------------

[~mboehm7] , I have a problem when serializing the instructions. I got some 
Spark instruction which could not be serialized. Hence, my question is that 
should we recreate the instruction by forcing the HOPs with CP type. And also, 
I'd like to know how do Parfor handle this case? Or it will not generate the SP 
instructions?
 Here is the stack:
{code:java}
Caused by: org.apache.sysml.runtime.DMLRuntimeException: Not supported: 
Instructions of type other than CP instructions 
org.apache.sysml.runtime.instructions.spark.BinaryMatrixScalarSPInstruction
SPARK°max°0·SCALAR·INT·true°_mVar1279·MATRIX·DOUBLE°_mVar1280·MATRIX·DOUBLE
{code}


was (Author: guobao):
[~mboehm7] , I have a problem when serializing the instructions. I got some 
Spark instruction which could not be serialized. Hence, my question is that 
should we recreate the instruction by forcing the HOPs with CP type.
Here is the stack:

{code:java}
Caused by: org.apache.sysml.runtime.DMLRuntimeException: Not supported: 
Instructions of type other than CP instructions 
org.apache.sysml.runtime.instructions.spark.BinaryMatrixScalarSPInstruction
SPARK°max°0·SCALAR·INT·true°_mVar1279·MATRIX·DOUBLE°_mVar1280·MATRIX·DOUBLE
{code}


> Setup and cleanup of remote workers
> -----------------------------------
>
>                 Key: SYSTEMML-2419
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2419
>             Project: SystemML
>          Issue Type: Sub-task
>            Reporter: LI Guobao
>            Assignee: LI Guobao
>            Priority: Major
>
> In the context of distributed spark env, we need to firstly ship the 
> necessary functions and variables to the remote workers and then to 
> initialize and register the cleanup of buffer pool for each remote worker. 
> All these are inspired by the parfor implementation.



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