Akanksha Mahajan 03a1d95db0 Set max_background_flushes dynamically (#6701)
Summary:
1. Add changes so that max_background_flushes can be set dynamically.
                   2. Add a testcase DBOptionsTest.SetBackgroundFlushThreads which set the
                        max_background_flushes dynamically using SetDBOptions.

TestPlan:  1. make -j64 check
                  2. Using new testcase DBOptionsTest.SetBackgroundFlushThreads
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6701

Reviewed By: ajkr

Differential Revision: D21028010

Pulled By: akankshamahajan15

fbshipit-source-id: 5f949e4a8fd3c32537b637947b7ee09a69cfc7c1
2020-04-20 16:19:02 -07:00
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