[SYSTEMDS-1164] IterablePredicate.toString NPE for incrementExpr

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: SystemML 0.12
• Component/s: Parser
• Assignee: Jon Deron Eriksson
• Reporter: Jon Deron Eriksson
• Created: 05/Jan/17 20:27
• Updated: 02/Mar/17 01:49
• Resolved: 06/Jan/17 20:40

Description

The following code will produce a null pointer exception:

import org.apache.sysml.api.mlcontext._
import org.apache.sysml.api.mlcontext.ScriptFactory._
val ml = new MLContext(sc)
val habermanUrl = "http://archive.ics.uci.edu/ml/machine-learning-databases/haberman/haberman.data"
val typesRDD = sc.parallelize(Array("1.0,1.0,1.0,2.0"))
val scriptUrl = "https://raw.githubusercontent.com/apache/incubator-systemml/master/scripts/algorithms/Univar-Stats.dml"
val uni = dmlFromUrl(scriptUrl).in("A", new java.net.URL(habermanUrl)).in("K", typesRDD).in("$CONSOLE_OUTPUT", true)
ml.execute(uni)
val se = uni.getScriptExecutor
val program = se.getDmlProgram

Exception:

java.lang.NullPointerException
	at org.apache.sysml.parser.IterablePredicate.toString(IterablePredicate.java:61)
	at org.apache.sysml.parser.ParForStatement.toString(ParForStatement.java:37)
	at java.lang.String.valueOf(String.java:2994)
	at java.lang.StringBuilder.append(StringBuilder.java:131)
	at org.apache.sysml.parser.StatementBlock.toString(StatementBlock.java:340)
	at java.lang.String.valueOf(String.java:2994)
	at java.lang.StringBuilder.append(StringBuilder.java:131)
	at org.apache.sysml.parser.DMLProgram.toString(DMLProgram.java:179)