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- HIVE-11625
Map instances with null keys are not properly handled for Parquet tables - HIVE-11611
A bad performance regression issue with Parquet happens if Hive does not select any columns - HIVE-10077
Use new ParquetInputSplit constructor API - HIVE-9868
Turn on Parquet vectorization in parquet branch - HIVE-9692
Allocate only parquet selected columns in HiveStructConverter class - HIVE-9670
Avoid reading file footers in ParquetRecordReaderWrapper - HIVE-9658
Reduce parquet memory usage by bypassing java primitive objects on ETypeConverter - HIVE-9522
Improve the speed of select count(*) statement for a parquet table with big input(~1GB) - HIVE-9332
Warn user when parquet mm kicks in - HIVE-9260
Implement the bloom filter for the ParquetSerde - HIVE-8128
Improve Parquet Vectorization
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