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    Thrown to indicate that a specified field does not exist. make sure "strongClassCache" exists and is accessible (not private).

java.lang.NoSuchFieldException: runnerState	at java.lang.Class.getDeclaredField(Class.java:1938)	at org.apache.pig.backend.hadoop20.PigJobControl.(PigJobControl.java:51)	at org.apache.pig.backend.hadoop.executionengine.shims.HadoopShims.newJobControl(HadoopShims.java:109)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.compile(JobControlCompiler.java:314)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:196)	at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.launchPig(HExecutionEngine.java:280)	at org.apache.pig.PigServer.launchPlan(PigServer.java:1390)	at org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1375)	at org.apache.pig.PigServer.storeEx(PigServer.java:1034)	at org.apache.pig.PigServer.store(PigServer.java:997)	at org.apache.pig.PigServer.openIterator(PigServer.java:910)	at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:746)	at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:372)	at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:230)	at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:205)	at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:66)	at org.apache.pig.Main.run(Main.java:558)	at org.apache.pig.Main.main(Main.java:170)	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)