For the following scenario, we expect MSCK REPAIR to discover partitions but it couldn't.
1. Have partitioned data path as follows.
2. create external table t1 (key int, value string) partitioned by (Year int, Month int, Day int) stored as orc location hdfs://mycluster/datapath/t1'';
3. msck repair table t1;
4. show partitions t1; --> Returns zero partitions
5. select * from t1; --> Returns empty data.
When the partition directory names are changed to lower case, this works fine.