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[PAN-2853] Create a metric tracking DB size #1662
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- create a Prometheus long gauge to track the database size - `rocksdb.live-sst-files-size` : https://github.com/facebook/rocksdb/blob/872a261ffc2a440dfe9e60d99e421e42f5f2cf5e/include/rocksdb/db.h#L685 - use `rocksdb.live-sst-files-size` property rather than `rocksdb.total-sst-files-size` (performance purpose: see warning https://github.com/facebook/rocksdb/blob/872a261ffc2a440dfe9e60d99e421e42f5f2cf5e/include/rocksdb/db.h#L680) - add tests to check creation of metrics
AbdelStark
added
enhancement
RatanRSur
approved these changes
Jul 9, 2019
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PR description
rocksdb.live-sst-files-size: https://github.com/facebook/rocksdb/blob/872a261ffc2a440dfe9e60d99e421e42f5f2cf5e/include/rocksdb/db.h#L685rocksdb.live-sst-files-sizeproperty rather thanrocksdb.total-sst-files-size(performance purpose: see warning https://github.com/facebook/rocksdb/blob/872a261ffc2a440dfe9e60d99e421e42f5f2cf5e/include/rocksdb/db.h#L680)Fixed Issue(s)