Fix caching of compaction picker's next index #2624
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@ajkr updated the pull request - view changes - changes since last import |
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The previous implementation of caching
file_sizeindex made no sense. It only remembered the original span of locked files starting from beginning offile_size. We should remember the index after all compactions that have been considered but rejected. This will reduce the work we do while holding the db mutex.Test Plan: unit test (before this change,
vstorage_->NextCompactionIndex(1 /* level */)would always return one)