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Posted to dev@pig.apache.org by "Thejas M Nair (JIRA)" <ji...@apache.org> on 2011/07/28 23:08:10 UTC
[jira] [Assigned] (PIG-2170) NPE thrown during illustrate
[ https://issues.apache.org/jira/browse/PIG-2170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thejas M Nair reassigned PIG-2170:
----------------------------------
Assignee: Thejas M Nair
> NPE thrown during illustrate
> ----------------------------
>
> Key: PIG-2170
> URL: https://issues.apache.org/jira/browse/PIG-2170
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.10
> Reporter: Mat Kelcey
> Assignee: Thejas M Nair
>
> working with version
> https://svn.apache.org/repos/asf/pig/trunk@1146777
> fetched from git
> git://git.apache.org/pig.git a7e1228a0fdfe76c3cff0e749e252dba8d387052
> using file /tmp/data.tsv
> id1 123
> id1 234
> id2 345
> id2 456
> this is the most cutdown/simplest script i can make that illustrates (no pun intended) the problem
> grunt> data = load '/tmp/data.tsv' as (id:chararray, value:long);
> grunt> cogrouped = cogroup data by id;
> grunt> exists = foreach cogrouped generate (IsEmpty(data.value) ? 0 : 1) as exists;
> grunt> dump exists
> is ok
> but
> grunt> illustrate exists
> throws
> java.lang.NullPointerException
> at org.apache.pig.pen.IllustratorAttacher.visitBinCond(IllustratorAttacher.java:360)
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POBinCond.visit(POBinCond.java:145)
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POBinCond.visit(POBinCond.java:36)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:69)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.walk(DepthFirstWalker.java:52)
> at org.apache.pig.pen.IllustratorAttacher.innerPlanAttach(IllustratorAttacher.java:417)
> at org.apache.pig.pen.IllustratorAttacher.visitPOForEach(IllustratorAttacher.java:229)
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.visit(POForEach.java:117)
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.visit(POForEach.java:47)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:69)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:71)
> at org.apache.pig.impl.plan.DepthFirstWalker.walk(DepthFirstWalker.java:52)
> at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
> at org.apache.pig.pen.ExampleGenerator.getData(ExampleGenerator.java:246)
> at org.apache.pig.pen.ExampleGenerator.getData(ExampleGenerator.java:238)
> at org.apache.pig.pen.LineageTrimmingVisitor.init(LineageTrimmingVisitor.java:103)
> at org.apache.pig.pen.LineageTrimmingVisitor.<init>(LineageTrimmingVisitor.java:98)
> at org.apache.pig.pen.ExampleGenerator.getExamples(ExampleGenerator.java:166)
> at org.apache.pig.PigServer.getExamples(PigServer.java:1201)
> at org.apache.pig.tools.grunt.GruntParser.processIllustrate(GruntParser.java:698)
> at org.apache.pig.tools.pigscript.parser.PigScriptParser.Illustrate(PigScriptParser.java:591)
> at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:306)
> at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:188)
> at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:164)
> at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:67)
> at org.apache.pig.Main.run(Main.java:487)
> at org.apache.pig.Main.main(Main.java:108)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> with pig.log containing
> java.io.IOException: Exception : null
> at org.apache.pig.PigServer.getExamples(PigServer.java:1207)
> at org.apache.pig.tools.grunt.GruntParser.processIllustrate(GruntParser.java:698)
> at org.apache.pig.tools.pigscript.parser.PigScriptParser.Illustrate(PigScriptParser.java:591)
> at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:306)
> at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:188)
> at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:164)
> at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:67)
> at org.apache.pig.Main.run(Main.java:487)
> at org.apache.pig.Main.main(Main.java:108)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> something to do with the IsEmpty since...
> grunt> data = load '/tmp/data.tsv' as (id:chararray, value:long);
> grunt> cogrouped = cogroup data by id;
> grunt> exists = foreach cogrouped generate data.value as exists;
> illustrates ok
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