外道父 | Noko @GedowFather Impalaを本番環境にぶっ込んでやった。ありがちな集計クエリで10倍、ただのカウントで30倍の処理時間差を計測 2012-11-16 11:25:12 外道父 | Noko @GedowFather Impala検証利用データ：17MB, 45,000行 で GROUP & ORDER BY が Hive 63s : Impala 7s。COUNTで Hive 34s : Impala 1s 2012-11-16 11:28:33
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