4634c735a8
Summary: The Options header file recommends using max_background_jobs rather than directly setting max_background_compactions or max_background_flushes. I've personally seen a performance problem where stalls were happening because the one background flushing thread was blocked that was fixed by this change - https://github.com/cockroachdb/cockroach/issues/19699#issuecomment-347672485 Closes https://github.com/facebook/rocksdb/pull/3208 Differential Revision: D6473178 Pulled By: ajkr fbshipit-source-id: 67c892ceb7b1909d251492640cb15a0f2262b7ed