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https://issues.apache.org/jira/browse/PIG-1493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai updated PIG-1493:
----------------------------
Status: Patch Available (was: Open)
> Column Pruner throw exception "inconsistent pruning"
> ----------------------------------------------------
>
> Key: PIG-1493
> URL: https://issues.apache.org/jira/browse/PIG-1493
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.7.0
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.8.0, 0.7.0
>
> Attachments: PIG-1493-1.patch
>
>
> The following script fail:
> {code}
> a = load '1.txt' as (a0:chararray, a1:chararray, a2);
> b = foreach a generate CONCAT(a0,a1) as b0, a0, a2;
> c = foreach b generate a0, a2;
> dump c;
> {code}
> Error message:
> ERROR 2185: Column $0 of (Name: b: ForEach 1-50 Operator Key: 1-50)
> inconsistent pruning
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to
> open iterator for alias c
> at org.apache.pig.PigServer.openIterator(PigServer.java:698)
> at
> org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:595)
> at
> org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:291)
> at
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:162)
> at
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:138)
> at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:90)
> at org.apache.pig.Main.run(Main.java:451)
> at org.apache.pig.Main.main(Main.java:103)
> Caused by: org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1002:
> Unable to store alias c
> at org.apache.pig.PigServer.storeEx(PigServer.java:804)
> at org.apache.pig.PigServer.store(PigServer.java:760)
> at org.apache.pig.PigServer.openIterator(PigServer.java:680)
> ... 7 more
> Caused by: org.apache.pig.impl.plan.optimizer.OptimizerException: ERROR 2212:
> Unable to prune plan
> at
> org.apache.pig.impl.logicalLayer.optimizer.PruneColumns.prune(PruneColumns.java:826)
> at
> org.apache.pig.impl.logicalLayer.optimizer.LogicalOptimizer.optimize(LogicalOptimizer.java:240)
> at org.apache.pig.PigServer.compileLp(PigServer.java:1180)
> at org.apache.pig.PigServer.storeEx(PigServer.java:799)
> ... 9 more
> Caused by: org.apache.pig.impl.plan.VisitorException: ERROR 2188: Cannot
> prune columns for (Name: b: ForEach 1-50 Operator Key: 1-50)
> at
> org.apache.pig.impl.logicalLayer.ColumnPruner.prune(ColumnPruner.java:177)
> at
> org.apache.pig.impl.logicalLayer.ColumnPruner.visit(ColumnPruner.java:202)
> at
> org.apache.pig.impl.logicalLayer.LOForEach.visit(LOForEach.java:132)
> at org.apache.pig.impl.logicalLayer.LOForEach.visit(LOForEach.java:47)
> at
> org.apache.pig.impl.plan.DependencyOrderWalker.walk(DependencyOrderWalker.java:69)
> at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
> at
> org.apache.pig.impl.logicalLayer.optimizer.PruneColumns.prune(PruneColumns.java:821)
> ... 12 more
> Caused by: org.apache.pig.impl.plan.optimizer.OptimizerException: ERROR 2185:
> Column $0 of (Name: b: ForEach 1-50 Operator Key: 1-50) inconsistent pruning
> at
> org.apache.pig.impl.logicalLayer.ColumnPruner.prune(ColumnPruner.java:148)
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