VLDBã«SQL on Hadoopã®è«–æ–‡ãŒå‡ºã¦ã„ã¾ã™å‚™å¿˜éŒ²ãŒã‚ã‚Šã®ãƒ¡ãƒ¢: VLDBã«ã€ŒSQL-on-Hadoop: Full Circle Back to Shared-Nothing Database Architecturesã€ã¨ã„ã†IBMã®ç ”究社ã«ã‚ˆã‚‹è«–æ–‡ãŒå…¬é–‹ã•ã‚Œã¦ã„ã¾ã—ãŸã€‚ http://www.vldb.org/pvldb/vol7/p1295-floratou.pdf Parquetã¨Impalaã€RCFileã¨Hiveã€ORCã¨Hive+Tezãªã©ã‚’TPC-DSを使ã£ãŸãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã®æ¯”較ã¨è€ƒå¯ŸãŒã‚ã‚Šã€ã‹ãªã‚Šèˆˆå‘³æ·±ã„ã§ã™ã€‚最新ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã®æ¯”較ã§ã¯ãªã„ã§ã™ãŒã€ã‹ãªã‚Šã„ã‚ã‚“ãªè§’度ã‹ã‚‰æ¯”較をã—ã¦ã„るよã†ãªã®ã§ã€ã“ã®å¤ã«æ™‚é–“ã‚’ã‹ã‘ã¦ã‚†ã£ãã‚Šèªã¿ãŸã„ã¨ã“ã‚。 ＃HDFS cachingã®æ©æµãªã©ã‚‚ã‚ã‚‹ã®ã§ã€Imapala1.4ã¯ã‚‚ã£ã¨é€Ÿã„（ã¯ãšï¼‰
RCFile，Parquet，ORCFile
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