Github user zzl1787 commented on a diff in the pull request:
https://github.com/apache/spark/pull/19129#discussion_r153682329
--- Diff: docs/sql-programming-guide.md ---
@@ -1587,6 +1580,10 @@ options.
Note that this is different from the Hive behavior.
- As a result, `DROP TABLE` statements on those tables will not remove
the data.
+ - From Spark 2.0.1, `spark.sql.parquet.cacheMetadata` is no longer used.
See
+ [SPARK-16321](https://issues.apache.org/jira/browse/SPARK-16321) and
+ [SPARK-15639](https://issues.apache.org/jira/browse/SPARK-15639) for
details.
--- End diff --
@dongjoon-hyun Ok, got this, and thank you. Finally I find the parameter to
control this.
`spark.sql.filesourceTableRelationCacheSize = 0`
This will disable the metadata cache.
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