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https://issues.apache.org/jira/browse/SYSTEMML-864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-864.
-----------------------------------

> Meta data operations after csv frame read w/ unknown size
> ---------------------------------------------------------
>
>                 Key: SYSTEMML-864
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-864
>             Project: SystemML
>          Issue Type: Bug
>          Components: Runtime
>    Affects Versions: SystemML 0.11
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 0.11
>
>
> In execution modes singlenode, hadoop, hybrid no reblocks are injected for 
> frames of format "csv". Accordingly, any nrow/ncol after a frame csv read 
> with unknown size fail with the following exception. 
> {code}
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: Invalid meta data 
> returned by 'nrow': -1
>         at 
> org.apache.sysml.runtime.instructions.cp.AggregateUnaryCPInstruction.processInstruction(AggregateUnaryCPInstruction.java:122)
>         at 
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:305)
> {code} 
> We already have a special case for matrices in execution mode singlenode, 
> which reads the matrix and updates the meta data on the fly. This 
> functionality should be extended for frames too. 



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