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由 Yueh-Hsuan Chiang 提交于
Summary: Universal compaction can involves in multiple levels. However, the current implementation of bytes_readn and bytes_readnp1 (and some other stats with postfix `n` and `np1`) assumes compaction can only have two levels. This patch fixes this bug and redefines bytes_readn and bytes_readnp1: * bytes_readnp1: the number of bytes read in the compaction output level. * bytes_readn: the total number of bytes read minus bytes_readnp1 Test Plan: Add a test in compaction_job_stats_test Reviewers: igor, sdong, rven, anthony, kradhakrishnan, IslamAbdelRahman Reviewed By: IslamAbdelRahman Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D40239
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