File system caching has a significant impact only on query Q1 which retrieves all documents without any predicate evaluation.
文件系统缓存仅对查询Q1(检索全部文档，无谓词运算)有较大影响。
File system caching has a significant impact only on query Q1 which retrieves all documents without any predicate evaluation.
文件系统缓存仅对查询Q1(检索全部文档，无谓词运算)有较大影响。
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