NPE when illustrating a relation
--------------------------------
Key: HCATALOG-164
URL: https://issues.apache.org/jira/browse/HCATALOG-164
Project: HCatalog
Issue Type: Bug
Components: pig
Reporter: Min Zhou
It seems that outputSchema hasn't been initialized while illustrating a
relation in pig like below
{noformat}
register lib/hive-common-0.7.1.jar;
register lib/hive-metastore-0.7.1.jar;
register lib/libfb303.jar;
register lib/libthrift.jar;
register lib/hive-serde-0.7.1.jar;
register lib/hcatalog-0.2.0.jar;
A = LOAD 'orders' USING org.apache.hcatalog.pig.HCatLoader();
ILLUSTRATE A;
{noformat}
so NPE would throw
{noformat}
java.lang.NullPointerException
at
org.apache.hcatalog.pig.PigHCatUtil.transformToTuple(PigHCatUtil.java:274)
at
org.apache.hcatalog.pig.PigHCatUtil.transformToTuple(PigHCatUtil.java:238)
at
org.apache.hcatalog.pig.HCatBaseLoader.getNext(HCatBaseLoader.java:61)
at
org.apache.pig.impl.io.ReadToEndLoader.getNextHelper(ReadToEndLoader.java:210)
at
org.apache.pig.impl.io.ReadToEndLoader.getNext(ReadToEndLoader.java:190)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POLoad.getNext(POLoad.java:129)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:267)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:262)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:145)
at
org.apache.pig.pen.LocalMapReduceSimulator.launchPig(LocalMapReduceSimulator.java:194)
at
org.apache.pig.pen.ExampleGenerator.getData(ExampleGenerator.java:257)
at
org.apache.pig.pen.ExampleGenerator.readBaseData(ExampleGenerator.java:222)
at
org.apache.pig.pen.ExampleGenerator.getExamples(ExampleGenerator.java:154)
at org.apache.pig.PigServer.getExamples(PigServer.java:1245)
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:165)
at org.apache.hadoop.mapred.JobShell.run(JobShell.java:54)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at org.apache.hadoop.mapred.JobShell.main(JobShell.java:68)
{noformat}
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