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Review request for pig and Richard Ding. Summary ------- A = load 'complex data' as (x: bag{}); B = foreach A generate x.($1, $2); produces stack trace: 2008-10-14 15:11:07,639 [main] ERROR org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - Error message from task (reduce) task_200809241441_9923_r_000000java.lang.NullPointerException at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POProject.getNext(POProject.java:183) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:215) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:166) at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.runPipeline(PigMapReduce.java:252) at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:222) at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:134) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:318) at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2207) PIG-496-1.patch is depended on PIG-730. Otherwise there will be frontend exception. This addresses bug PIG-496. https://issues.apache.org/jira/browse/PIG-496 Diffs ----- http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/builtin/Utf8StorageConverter.java 1057393 http://svn.apache.org/repos/asf/pig/trunk/test/org/apache/pig/test/TestConversions.java 1057393 Diff: https://reviews.apache.org/r/272/diff Testing ------- Test-patch: [exec] +1 overall. [exec] [exec] +1 @author. The patch does not contain any @author tags. [exec] [exec] +1 tests included. The patch appears to include 3 new or modified tests. [exec] [exec] +1 javadoc. The javadoc tool did not generate any warning messages. [exec] [exec] +1 javac. The applied patch does not increase the total number of javac compiler warnings. [exec] [exec] +1 findbugs. The patch does not introduce any new Findbugs warnings. [exec] [exec] +1 release audit. The applied patch does not increase the total number of release audit warnings. Unit-test all pass Thanks, Daniel