Add test cases for reading/writing Avro records with empty arrays and maps.
Fix tests for reading and writing Avro records with empty arrays and maps.
Correctly handle Avro records with empty maps and arrays.
Merge branch 'master' into fix_avro_empty_maps_arrays
Add empty map and array to test Avro schema all-minus-fixed and add empty map and array fields to parquet-avro test that tests fields of all (except fixed) types.
Merge pull request #169 from davidzchen/fix_avro_empty_maps_arrays

Support avro records with empty maps and arrays
Merge changes from master that fix handling empty Avro arrays and maps.