org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias sc. Backend error : Unable to recreate exception from backed error: Error: Found class org.apache.hadoop.mapreduce.TaskAttemptContext, but interface was expected

Apache's JIRA Issue Tracker | lin guo | 6 years ago
  1. 0
    Check for bad records in the input data (like '(null)')
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    apache.org | 2 years ago
    org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias sc. Backend error : Unable to recreate exception from backed error: Error: Found class org.apache.hadoop.mapreduce.TaskAttemptContext, but interface was expected
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    Wonderdog fails in Pig 0.10?

    GitHub | 5 years ago | rjurney
    org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1031: Incompatable schema: left is "json_record:chararray", right is "message_id:chararray,thread_id:chararray,in_reply_to:chararray,subject:chararray,body:chararray,date:chararray,froms:bag{ARRAY_ELEM:tuple(real_name:chararray,address:chararray)},tos:bag{ARRAY_ELEM:tuple(real_name:chararray,address:chararray)},ccs:bag{ARRAY_ELEM:tuple(real_name:chararray,address:chararray)},bccs:bag{ARRAY_ELEM:tuple(real_name:chararray,address:chararray)},reply_tos:bag{ARRAY_ELEM:tuple(real_name:chararray,address:chararray)}"
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    Bulk loading using pig

    Stack Overflow | 3 years ago | user2806611
    org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1000: Error during parsing. Encountered " "as" "AS "" at line 1, column 138. Was expecting one of: "parallel" ... ";" ...

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    Root Cause Analysis

    1. org.apache.pig.backend.executionengine.ExecException

      ERROR 2997: Unable to recreate exception from backed error: Error: Found class org.apache.hadoop.mapreduce.TaskAttemptContext, but interface was expected

      at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getErrorMessages()
    2. org.apache.pig
      Main.main
      1. org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getErrorMessages(Launcher.java:221)
      2. org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getStats(Launcher.java:151)
      3. org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:337)
      4. org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:378)
      5. org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1198)
      6. org.apache.pig.PigServer.storeEx(PigServer.java:874)
      7. org.apache.pig.PigServer.store(PigServer.java:816)
      8. org.apache.pig.PigServer.openIterator(PigServer.java:728)
      9. org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:612)
      10. org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:303)
      11. org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:165)
      12. org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:141)
      13. org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:90)
      14. org.apache.pig.Main.run(Main.java:406)
      15. org.apache.pig.Main.main(Main.java:107)
      15 frames