[jira] [Created] (SPARK-3965) Spark assembly for hadoop2 contains avro-mapred for hadoop1

["David Jacot (JIRA)" <ji...@apache.org>]

David Jacot created SPARK-3965:
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             Summary: Spark assembly for hadoop2 contains avro-mapred for hadoop1
                 Key: SPARK-3965
                 URL: https://issues.apache.org/jira/browse/SPARK-3965
             Project: Spark
          Issue Type: Bug
          Components: Input/Output
    Affects Versions: 1.1.0, 1.0.2
         Environment: hadoop2, HDP2.1
            Reporter: David Jacot


When building Spark assembly for hadoop2, org.apache.avro:avro-mapred for hadoop1 is picked and added to the assembly which leads to following exception at runtime.

{code}
java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected
        at org.apache.avro.mapreduce.AvroKeyInputFormat.createRecordReader(AvroKeyInputFormat.java:47)
        at org.apache.spark.rdd.NewHadoopRDD$$anon$1.<init>(NewHadoopRDD.scala:111)
...
{code}

The patch for SPARK-3039 works well at compile time but artefact's classifier is not applied when assembly is built. I'm not a maven expert but I don't think that classifiers are applied on transitive dependencies.



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