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  1. Pig
  2. PIG-5108

AvroStorage on Tez with exception on nested records

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.16.0
    • Fix Version/s: 0.17.0, 0.16.1
    • Component/s: tez
    • Labels:
      None
    • Environment:

      HadoopVersion: 2.6.0-cdh5.8.0
      PigVersion: 0.16.0
      TezVersion: 0.7.0

    • Hadoop Flags:
      Reviewed

      Description

      Hi,

      While migrating to the latest Pig version we have seen a general issue when using nested Avro records on Tez:

      Caused by: java.io.IOException: class org.apache.pig.impl.util.avro.AvroTupleWrapper.write called, but not implemented yet
      	at org.apache.pig.impl.util.avro.AvroTupleWrapper.write(AvroTupleWrapper.java:68)
      	at org.apache.pig.impl.io.PigNullableWritable.write(PigNullableWritable.java:139)
      ...
      

      The setup is
      schema

      {
          "fields": [
              {
                  "name": "id",
                  "type": "int"
              },
              {
                  "name": "property",
                  "type": {
                      "fields": [
                          {
                              "name": "id",
                              "type": "int"
                          }
                      ],
                      "name": "Property",
                      "type": "record"
                  }
              }
          ],
          "name": "Person",
          "namespace": "com.github.ouyi.avro",
          "type": "record"
      }
      

      Pig script group_person.pig

      loaded_person =
          LOAD '$input'
          USING AvroStorage();
      
      grouped_records =
          GROUP
              loaded_person BY (property.id);
      
      STORE grouped_records
          INTO '$output'
          USING AvroStorage();
      

      sample data

      {"id":1,"property":{"id":1}}
      

      Execution on Tez

      pig -x tez_local -p input=file:///usr/lib/pig/pig-0.16.0/person-prop.avro -p output=file:///output group_person.pig
      ...
      Caused by: java.io.IOException: class org.apache.pig.impl.util.avro.AvroTupleWrapper.write called, but not implemented yet
      	at org.apache.pig.impl.util.avro.AvroTupleWrapper.write(AvroTupleWrapper.java:68)
      	at org.apache.pig.impl.io.PigNullableWritable.write(PigNullableWritable.java:139)
      ...
      

      Execution on mapred

      pig -x local -p input=file:///usr/lib/pig/pig-0.16.0/person-prop.avro -p output=file:///output7 group_person.pig
      ...
      Output(s):
      Successfully stored 1 records in: "file:///output7"
      ...
      

      I am going to attach the complete log files of both runs.

      I assume that the Pig script should work regardless of Tez or mapreduce? Is there any underlying change when migrating to Tez which makes the schema invalid?

      Thanks,
      Sebastian

        Attachments

        1. PIG-5108-2-addendum.patch
          2 kB
          Rohini Palaniswamy
        2. PIG-5108-1.patch
          3 kB
          Daniel Dai
        3. person-prop.avro
          0.3 kB
          Sebastian Geller

          Activity

            People

            • Assignee:
              daijy Daniel Dai
              Reporter:
              sgeller@teamaol.com Sebastian Geller

              Dates

              • Created:
                Updated:
                Resolved:

                Issue deployment