[MINOR][SQL] Fix wrong comments on org.apache.spark.sql.parquet.row.attributes
authorDongjoon Hyun <dongjoon@apache.org>
Mon, 22 Jan 2018 06:18:57 +0000 (15:18 +0900)
committerhyukjinkwon <gurwls223@gmail.com>
Mon, 22 Jan 2018 06:18:57 +0000 (15:18 +0900)
commit8142a3b883a5fe6fc620a2c5b25b6bde4fda32e5
tree4cb3f07d68d1cf7145820f715fa279e5ba79db50
parent11daeb833222b1cd349fb1410307d64ab33981db
[MINOR][SQL] Fix wrong comments on org.apache.spark.sql.parquet.row.attributes

## What changes were proposed in this pull request?

This PR fixes the wrong comment on `org.apache.spark.sql.parquet.row.attributes`
which is useful for UDTs like Vector/Matrix. Please see [SPARK-22320](https://issues.apache.org/jira/browse/SPARK-22320) for the usage.

Originally, [SPARK-19411](https://github.com/apache/spark/commit/bf493686eb17006727b3ec81849b22f3df68fdef#diff-ee26d4c4be21e92e92a02e9f16dbc285L314) left this behind during removing optional column metadatas. In the same PR, the same comment was removed at line 310-311.

## How was this patch tested?

N/A (This is about comments).

Author: Dongjoon Hyun <dongjoon@apache.org>

Closes #20346 from dongjoon-hyun/minor_comment_parquet.
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFileFormat.scala