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https://issues.apache.org/jira/browse/PIG-1235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich resolved PIG-1235.
---------------------------------
Resolution: Won't Fix
This is not relevant with new optimizer
> OptimizerException: Problem while rebuilding projection map or schema in
> logical optimizer
> ------------------------------------------------------------------------------------------
>
> Key: PIG-1235
> URL: https://issues.apache.org/jira/browse/PIG-1235
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.7.0
> Reporter: Richard Ding
>
> Here is the script that throws this exception:
> {code}
> A = load '1.txt' as (x, y, z);
> B = group A by (x > 0 ? x : 0);
> C = filter B by group > 10;
> explain C
> {code}
> Pig Stack Trace
> ---------------
> ERROR 2157: Error while fixing projections. No mapping available in old
> predecessor to replace column.
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1067: Unable to
> explain alias C
> at org.apache.pig.PigServer.explain(PigServer.java:593)
> at
> org.apache.pig.tools.grunt.GruntParser.explainCurrentBatch(GruntParser.java:315)
> at
> org.apache.pig.tools.grunt.GruntParser.processExplain(GruntParser.java:268)
> at
> org.apache.pig.tools.pigscript.parser.PigScriptParser.Explain(PigScriptParser.java:517)
> at
> org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:265)
> at
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:168)
> at
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:144)
> at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:75)
> at org.apache.pig.Main.main(Main.java:352)
> Caused by: org.apache.pig.impl.plan.optimizer.OptimizerException: ERROR 2145:
> Problem while rebuilding projection map or schema in logical optimizer.
> at
> org.apache.pig.impl.logicalLayer.optimizer.LogicalOptimizer.optimize(LogicalOptimizer.java:215)
> at org.apache.pig.PigServer.compileLp(PigServer.java:856)
> at org.apache.pig.PigServer.compileLp(PigServer.java:792)
> at org.apache.pig.PigServer.getStorePlan(PigServer.java:734)
> at org.apache.pig.PigServer.explain(PigServer.java:576)
> ... 8 more
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