This has definitely been seen before. I made a JIRA ticket back in the day for it.
2011/3/29 Xavier Stevens <[email protected]> > The value is a mixture of types. I'll go through and spit out what types > it has and get back to you. > > Thanks Alan. > > > On 3/29/11 1:56 PM, Alan Gates wrote: > > What are you putting in as the value of the map? From the error it > > looks like your passing in a datatype Pig doesn't understand, and when > > it tries to write it out to the screen it doesn't know how to. > > > > Alan. > > > > On Mar 29, 2011, at 1:34 PM, Xavier Stevens wrote: > > > >> I'm currently getting a really weird error coming from one of my eval > >> functions. It expects a tuple where the first element is a string and > >> then outputs a Map<String,Object> as a result. I put in some debug code > >> and I can see the value I get is what I expect and that the resulting > >> map size is 35 elements. Anyone seen a problem like this before? > >> > >> Thanks, > >> > >> -Xavier > >> > >> Pig script line: > >> > >> genmap = FOREACH raw GENERATE > >> com.mozilla.pig.eval.json.JsonMap(processed_json) AS > >> processed_json_map:map[]; > >> > >> Log file: > >> > >> ERROR 2997: Unable to recreate exception from backed error: > >> java.io.IOException: java.lang.RuntimeException: Unexpected data type -1 > >> found in stream. > >> > >> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable > >> to open iterator for alias genmap. Backend error : Unable to recreate > >> exception from backed error: java.io.IOException: > >> java.lang.RuntimeException: Unexpected data type -1 found in stream. > >> at org.apache.pig.PigServer.openIterator(PigServer.java:742) > >> at > >> org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:612) > >> at > >> > org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:303) > >> > >> at > >> > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:165) > >> > >> at > >> > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:141) > >> > >> at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:76) > >> at org.apache.pig.Main.run(Main.java:465) > >> at org.apache.pig.Main.main(Main.java:107) > >> Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR > >> 2997: Unable to recreate exception from backed error: > >> java.io.IOException: java.lang.RuntimeException: Unexpected data type -1 > >> found in stream. > >> at > >> > org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getErrorMessages(Launcher.java:221) > >> > >> at > >> > org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getStats(Launcher.java:154) > >> > >> at > >> > org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:337) > >> > >> at > >> > org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:378) > >> > >> at > >> org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1198) > >> at org.apache.pig.PigServer.storeEx(PigServer.java:874) > >> at org.apache.pig.PigServer.store(PigServer.java:816) > >> at org.apache.pig.PigServer.openIterator(PigServer.java:728) > >> ... 7 more > >> > > >
