From e6e44e46e345640fd89be9f10cdc448b44d30cc1 Mon Sep 17 00:00:00 2001 From: wangfei Date: Sat, 26 Apr 2014 14:38:42 -0700 Subject: add note of how to support table with more than 22 fields Author: wangfei Closes #564 from scwf/patch-6 and squashes the following commits: a331876 [wangfei] Update sql-programming-guide.md 685135b [wangfei] Update sql-programming-guide.md 10b3dc0 [wangfei] Update sql-programming-guide.md 1c40480 [wangfei] add note of how to support table with 22 fields --- docs/sql-programming-guide.md | 2 ++ 1 file changed, 2 insertions(+) (limited to 'docs/sql-programming-guide.md') diff --git a/docs/sql-programming-guide.md b/docs/sql-programming-guide.md index 3ca6cc95bd..0c743c9d60 100644 --- a/docs/sql-programming-guide.md +++ b/docs/sql-programming-guide.md @@ -114,6 +114,8 @@ val sqlContext = new org.apache.spark.sql.SQLContext(sc) import sqlContext._ // Define the schema using a case class. +// Note: Case classes in Scala 2.10 can support only up to 22 fields. To work around this limit, +// you can use custom classes that implement the Product interface. case class Person(name: String, age: Int) // Create an RDD of Person objects and register it as a table. -- cgit v1.2.3