Difference between orc and parquet format
參考:
https://www.cnblogs.com/ITtangtang/p/7677912.html
https://blog.csdn.net/yu616568/article/details/51868447
https://hortonworks.com/blog/orcfile-in-hdp-2-better-compression-better-performance/
總結
兩者都是參考了Google 的Dremel 的資料格式, 列儲存, 有預存統計資訊
區別是Parquet 對於 nested data (巢狀型別, 複雜型別 比如struct)有更好的支援
其他方面ORC效能好點
Cloudera推Parquet, Hortonworks推ORC
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Difference between orc and parquet format
參考: https://www.cnblogs.com/ITtangtang/p/7677912.html https://blog.csdn.net/yu616568/article/details/51868447 https://hortonworks.com/blog/orcfi
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