[SQL][MINOR] Fix one little mismatched comment according to the codes in interface.scala

lw-lin · rxin · commit c00744e60f77 · 2016-01-19T00:15:43.000-08:00
Author: proflin <proflin.me@gmail.com> Closes #10824 from proflin/master.
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala b/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala
@@ -426,7 +426,7 @@ abstract class OutputWriter {
  * [[Row]] objects. In addition, when reading from Hive style partitioned tables stored in file
  * systems, it's able to discover partitioning information from the paths of input directories, and
  * perform partition pruning before start reading the data. Subclasses of [[HadoopFsRelation()]]
- * must override one of the three `buildScan` methods to implement the read path.
+ * must override one of the four `buildScan` methods to implement the read path.
  *
  * For the write path, it provides the ability to write to both non-partitioned and partitioned
  * tables.  Directory layout of the partitioned tables is compatible with Hive.

Original file line number	Diff line number	Diff line change
`@@ -426,7 +426,7 @@ abstract class OutputWriter {`
`426`	`426`	`* [[Row]] objects. In addition, when reading from Hive style partitioned tables stored in file`
`427`	`427`	`* systems, it's able to discover partitioning information from the paths of input directories, and`
`428`	`428`	`* perform partition pruning before start reading the data. Subclasses of [[HadoopFsRelation()]]`
`429`		- * must override one of the three `buildScan` methods to implement the read path.
	`429`	+ * must override one of the four `buildScan` methods to implement the read path.
`430`	`430`	`*`
`431`	`431`	`* For the write path, it provides the ability to write to both non-partitioned and partitioned`
`432`	`432`	`* tables. Directory layout of the partitioned tables is compatible with Hive.`