Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/16756
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GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/16756
[SPARK-19411][SQL] Remove the metadata used to mark optional columns in
merged Parquet schema for filter predicate pushdown
## What changes were proposed in this pull request?
There is a me
