maropu commented on a change in pull request #26531: [SPARK-26499][SQL][2.4] 
JdbcUtils.makeGetter does not handle ByteType
URL: https://github.com/apache/spark/pull/26531#discussion_r346596194
 
 

 ##########
 File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala
 ##########
 @@ -438,6 +438,10 @@ object JdbcUtils extends Logging {
       (rs: ResultSet, row: InternalRow, pos: Int) =>
         row.setShort(pos, rs.getShort(pos + 1))
 
+    case ByteType =>
+      (rs: ResultSet, row: InternalRow, pos: Int) =>
+        row.update(pos, rs.getByte(pos + 1))
 
 Review comment:
   Ur, I missed that, too. I'll make a pr to fix this in master now.

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