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https://issues.apache.org/jira/browse/SPARK-1982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14014945#comment-14014945
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Andre Schumacher commented on SPARK-1982:
-----------------------------------------
It turns out that ByteType primitive types weren't correctly treated earlier.
Since Parquet doesn't have these one fix is to use fixed-length byte arrays
(which are treated as primitives also). This is fine until there will be
support for nested types. Even then I think one may want to treat these as
actual arrays and not primitives.
Anyway.. PR available here: https://github.com/apache/spark/pull/934
> saveToParquetFile doesn't support ByteType
> ------------------------------------------
>
> Key: SPARK-1982
> URL: https://issues.apache.org/jira/browse/SPARK-1982
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.0.0
> Reporter: Michael Armbrust
> Assignee: Andre Schumacher
>
> {code}
> java.lang.RuntimeException: Unsupported datatype ByteType
> at scala.sys.package$.error(package.scala:27)
> at
> org.apache.spark.sql.parquet.ParquetTypesConverter$.fromDataType(ParquetRelation.scala:201)
> ...
> {code}
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