update comments according to the review comment.

apache · Aug 30, 2017 · 34e2845 · 34e2845
1 parent 94e624e
commit 34e2845
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala b/sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala
@@ -517,9 +517,11 @@ final class DataFrameWriter[T] private[sql](ds: Dataset[T]) {
    *
    * You can set the following ORC-specific option(s) for writing ORC files:
    * <ul>
-   * <li>`compression` (default `snappy`): compression codec to use when saving to file. This can be
-   * one of the known case-insensitive shorten names(`none`, `snappy`, `zlib`, and `lzo`).
-   * This will override `orc.compress`.</li>
+   * <li>`compression` (default is the value specified in `spark.sql.orc.compression.codec`):
+   * compression codec to use when saving to file. This can be one of the known case-insensitive
+   * shorten names(`none`, `snappy`, `zlib`, and `lzo`). This will override
+   * `orc.compress` and `spark.sql.parquet.compression.codec`. If `orc.compress` is given,
+   * it overrides `spark.sql.parquet.compression.codec`.</li>
    * </ul>
    *
    * @since 1.5.0