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https://issues.apache.org/jira/browse/SYSTEMML-1147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16786294#comment-16786294
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Janardhan commented on SYSTEMML-1147:
-------------------------------------
This issue is something that {{DML}} developers who are not familiar with
\{{java}} encounter, which gives a little idea as to where they were wrong.
Essentially this only gives CP instruction, which is quite difficult to digest.
> Improved Error Reporting
> ------------------------
>
> Key: SYSTEMML-1147
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1147
> Project: SystemML
> Issue Type: Epic
> Components: Compiler, Documentation
> Reporter: Felix Schüler
> Priority: Major
>
> Error reporting is in many cases not very user friendly.
> For example, wrong indexing in a user-defined function leads to long
> stack-traces that only contain information about the instructions and finally
> end with an IndexOutOfBoundsException.
> In general, the reported instructions are not very helpful because they also
> only contain renamed variables (e.g. _Var42) that don't correspond to
> anything in the DML script.
> This epic is to track error messages that could use some improvements.
> Here is an Example of a case that is not very helpful:
> {code}
> Exception in thread "main" org.apache.sysml.api.mlcontext.MLContextException:
> Exception when executing script
> at org.apache.sysml.api.mlcontext.MLContext.execute(MLContext.java:301)
> at org.apache.sysml.api.mlcontext.MLContext.execute(MLContext.java:270)
> at org.apache.sysml.examples.TSNE$$anon$1.run(TSNE.scala:8)
> at org.apache.sysml.examples.TSNE$$anon$1.run(TSNE.scala)
> at
> org.apache.sysml.examples.TSNE$.delayedEndpoint$org$apache$sysml$examples$TSNE$1(TSNE.scala:119)
> at org.apache.sysml.examples.TSNE$delayedInit$body.apply(TSNE.scala:6)
> at scala.Function0$class.apply$mcV$sp(Function0.scala:34)
> at
> scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
> at scala.App$$anonfun$main$1.apply(App.scala:76)
> at scala.App$$anonfun$main$1.apply(App.scala:76)
> at scala.collection.immutable.List.foreach(List.scala:381)
> at
> scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35)
> at scala.App$class.main(App.scala:76)
> at org.apache.sysml.examples.TSNE$.main(TSNE.scala:6)
> at org.apache.sysml.examples.TSNE.main(TSNE.scala)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
> Caused by: org.apache.sysml.api.mlcontext.MLContextException: Exception
> occurred while executing runtime program
> at
> org.apache.sysml.api.mlcontext.ScriptExecutor.executeRuntimeProgram(ScriptExecutor.java:378)
> at
> org.apache.sysml.api.mlcontext.ScriptExecutor.execute(ScriptExecutor.java:321)
> at org.apache.sysml.api.mlcontext.MLContext.execute(MLContext.java:293)
> ... 19 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException:
> org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error in program
> block generated from statement block between lines 62 and 62 -- Error
> evaluating instruction:
> CP°extfunct°.defaultNS°x2p°2°1°X·MATRIX·DOUBLE°30·SCALAR·INT·true°inter
> at
> org.apache.sysml.runtime.controlprogram.Program.execute(Program.java:130)
> at
> org.apache.sysml.api.mlcontext.ScriptExecutor.executeRuntimeProgram(ScriptExecutor.java:376)
> ... 21 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error
> in program block generated from statement block between lines 62 and 62 --
> Error evaluating instruction:
> CP°extfunct°.defaultNS°x2p°2°1°X·MATRIX·DOUBLE°30·SCALAR·INT·true°inter
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:320)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeInstructions(ProgramBlock.java:221)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:168)
> at
> org.apache.sysml.runtime.controlprogram.Program.execute(Program.java:123)
> ... 22 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: error executing
> function .defaultNS::x2p
> at
> org.apache.sysml.runtime.instructions.cp.FunctionCallCPInstruction.processInstruction(FunctionCallCPInstruction.java:177)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:290)
> ... 25 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error
> in function program block generated from function statement block between
> lines 6 and 53 -- Error evaluating function program block
> at
> org.apache.sysml.runtime.controlprogram.FunctionProgramBlock.execute(FunctionProgramBlock.java:121)
> at
> org.apache.sysml.runtime.instructions.cp.FunctionCallCPInstruction.processInstruction(FunctionCallCPInstruction.java:170)
> ... 26 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error
> in for program block generated from for statement block between lines 14 and
> 50 -- Error evaluating for program block
> at
> org.apache.sysml.runtime.controlprogram.ForProgramBlock.execute(ForProgramBlock.java:162)
> at
> org.apache.sysml.runtime.controlprogram.FunctionProgramBlock.execute(FunctionProgramBlock.java:114)
> ... 27 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error
> in while program block generated from while statement block between lines 22
> and 48 -- Error evaluating while program block
> at
> org.apache.sysml.runtime.controlprogram.WhileProgramBlock.execute(WhileProgramBlock.java:181)
> at
> org.apache.sysml.runtime.controlprogram.ForProgramBlock.execute(ForProgramBlock.java:150)
> ... 28 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error
> in program block generated from statement block between lines 23 and 29 --
> Error evaluating instruction:
> CP°leftIndex°_mVar283·MATRIX·DOUBLE°0.0·SCALAR·DOUBLE·true°_Var279·SCALAR·INT·false°_Var279·SCALAR·INT·false°1·SCALAR·INT·true°1·SCALAR·INT·true°_mVar284·MATRIX·DOUBLE
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:320)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeInstructions(ProgramBlock.java:221)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:168)
> at
> org.apache.sysml.runtime.controlprogram.WhileProgramBlock.execute(WhileProgramBlock.java:169)
> ... 29 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 100
> at
> org.apache.sysml.runtime.matrix.data.MatrixBlock.quickSetValue(MatrixBlock.java:609)
> at
> org.apache.sysml.runtime.matrix.data.MatrixBlock.leftIndexingOperations(MatrixBlock.java:3714)
> at
> org.apache.sysml.runtime.instructions.cp.MatrixIndexingCPInstruction.processInstruction(MatrixIndexingCPInstruction.java:103)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:290)
> ... 32 more
> {code}
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