Print the missed last layer in cfstats
Summary: Printing compaction stats used to operate on two variable: number_levels_: for printing the layer num_levels_to_check: for updating the compaction score After this commit: 361010d4 these two are mixed up and as a result the last layer might not be printed out: https://fb.facebook.com/groups/rocksdb.internal/permalink/1315716625143616/ number_levels_ was used to decide which layers to print: https://github.com/facebook/rocksdb/blob/672300f47f72b28c164fdf98a08171c09e311205/db/internal_stats.cc#L753 but after the patch it is based on the return value of DumpCFMapStats https://github.com/facebook/rocksdb/blob/361010d44738de48ffc4fd9add70caa0891a0719/db/internal_stats.cc#L929 which returns num_levels_to_check: https://github.com/facebook/rocksdb/blob/361010d44738de48ffc4fd9add70caa0891a0719/db/internal_stats.cc#L917 Closes https://github.com/facebook/rocksdb/pull/1853 Differential Revision: D4529280 Pulled By: maysamyabandeh fbshipit-source-id: 3fd9448
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