Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/21442
@HyukjinKwon Currently, in my opinion, the highest priority PRs include
Parquet nested column pruning
(https://github.com/apache/spark/pull/21320/files), new built-in avro,
high-order functions, data correctness issue of Shuffle+Repartition on RDD,
gang scheduling and so on. If you have bandwidth, please also help the reviews
in these PRs.
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