Question

我正在使用Pig加载XML数据。当我发出ILLUSTRATE命令时，我收到一个错误。这就是我在做的事情。

REGISTER piggybank-0.15.0.jar
xml = LOAD '/xml/data/path' using org.apache.pig.piggybank.storage.XMLLoader('doc') as (x:chararray);
ILLUSTRATE xml;

这是 ERROR

.... ..... 2018-03-20 19:56:52,265 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapOnly$Map - Aliases being processed per job phase (AliasName[line,offset]): M: xml[6,6] C: R: 2018-03-20 19:56:52,266 [main] ERROR org.apache.pig.pen.AugmentBaseDataVisitor - No (valid) input data found! java.lang.RuntimeException: No (valid) input data found! at org.apache.pig.pen.AugmentBaseDataVisitor.visit(AugmentBaseDataVisitor.java:585) at org.apache.pig.newplan.logical.relational.LOLoad.accept(LOLoad.java:230) at org.apache.pig.pen.util.PreOrderDepthFirstWalker.depthFirst(PreOrderDepthFirstWalker.java:82) at org.apache.pig.pen.util.PreOrderDepthFirstWalker.walk(PreOrderDepthFirstWalker.java:66) at org.apache.pig.newplan.PlanVisitor.visit(PlanVisitor.java:52) at org.apache.pig.pen.ExampleGenerator.getExamples(ExampleGenerator.java:180) at org.apache.pig.PigServer.getExamples(PigServer.java:1250) at org.apache.pig.tools.grunt.GruntParser.processIllustrate(GruntParser.java:831) at org.apache.pig.tools.pigscript.parser.PigScriptParser.Illustrate(PigScriptParser.java:802) at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:381) at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:198) at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:173) at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69) at org.apache.pig.Main.run(Main.java:547) at org.apache.pig.Main.main(Main.java:158) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.util.RunJar.run(RunJar.java:221) at org.apache.hadoop.util.RunJar.main(RunJar.java:136) 2018-03-20 19:56:52,283 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 2997: Encountered IOException. Exception

我已经验证了数据的路径，并确保数据确实存在。为了确认这一点，我使用PigStorage而不是XMLLoader加载了数据，我可以看到ILLUSTRATE命令正在工作，并且转储xml在输出中有一些数据。我想这是导致问题的XMLLoader。不确定确切的问题。

非常感谢任何帮助

Answer 1

当我在表加载上尝试执行ILLUSTRATE命令，尝试执行另一个功能并执行该操作时，也会发生这种情况。

找不到（有效）输入数据！在猪

1 个答案: