title: sqoop export avro nested record AvroExportMapper
body: <p>given an avro record schema for RecordA as </p>
  
  <pre><code>"type":"record"...
  "fields": [ { "name": "typeB", "type":"RecordB"} ...
  </code></pre>
  
  <p>and RecordB avro record as </p>
  
  <pre><code>"type":"record"
  "fields": [ {"name": "mysqoopfield", "type":"int" } ...
  </code></pre>
  
  <p>is there a mechanism in sqoop-export by which I can export the value of mysqoopfield to RDBMS with a table with just column mysqoofield ?</p>
  
  <p>have tried </p>
  
  <pre><code>sqoop-export --connect ... --driver ... --export /path/to/avro --columns typeB.mysqoopfield | typeB[mysqoopfield] 
  </code></pre>
  
  <p>which don't work. the . is translated to a '_' by the AvroExportMapper. Just ondering if this is supported before digging further ?
  Doesn't also seem like a custom mapper implemenation can be provided to sqoop ?</p>