Summary:
If range tombstones are generated every few writes, the
KeyGenerator's limit is now extended to account for the additional
Next() calls. This is primarily important for `filluniquerandom`
benchmarks that enforce the call limit.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4404
Differential Revision: D9949326
Pulled By: abhimadan
fbshipit-source-id: 0bdfeb2cad2098dc0b8b029236dab5e4bef25e38
519f8b145f