Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/19129
The PR title resolved two issues under title
`[SPARK-15639][SPARK-16321][SQL] Push down filter at RowGroups level for
parquet reader` I'll add like the following. Is it enough?
```
- 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-16321) for
details.
```
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