Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20076#discussion_r159889119
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -323,11 +323,13 @@ object SQLConf {
.createWithDefault(false)
val PARQUET_COMPRESSION =
buildConf("spark.sql.parquet.compression.codec")
- .doc("Sets the compression codec use when writing Parquet files.
Acceptable values include: " +
- "uncompressed, snappy, gzip, lzo.")
+ .doc("Sets the compression codec used when writing Parquet files. If
other compression codec " +
+ "configuration was found through hive or parquet, the precedence
would be `compression`, " +
--- End diff --
> Sets the compression codec used when writing Parquet files. If either
`compression` or `parquet.compression` is specified in the table-specific
options/properties, the precedence would be `compression`, ...
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