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Motivation\r\n\r\nAdded missing configuration keys for BookKeeper DbLedgerStorage"},"comment":{"url":"https://api.github.com/repos/yahoo/pulsar/issues/comments/262327554","html_url":"https://github.com/yahoo/pulsar/pull/123#issuecomment-262327554","issue_url":"https://api.github.com/repos/yahoo/pulsar/issues/123","id":262327554,"user":{"login":"merlimat","id":62500,"avatar_url":"https://avatars.githubusercontent.com/u/62500?v=3","gravatar_id":"","url":"https://api.github.com/users/merlimat","html_url":"https://github.com/merlimat","followers_url":"https://api.github.com/users/merlimat/followers","following_url":"https://api.github.com/users/merlimat/following{/other_user}","gists_url":"https://api.github.com/users/merlimat/gists{/gist_id}","starred_url":"https://api.github.com/users/merlimat/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/merlimat/subscriptions","organizations_url":"https://api.github.com/users/merlimat/orgs","repos_url":"https://api.github.com/users/merlimat/repos","events_url":"https://api.github.com/users/merlimat/events{/privacy}","received_events_url":"https://api.github.com/users/merlimat/received_events","type":"User","site_admin":false},"created_at":"2016-11-22T18:42:07Z","updated_at":"2016-11-22T18:42:07Z","body":"@sschepens  In DbLedgerStorage, RocksDB is used to just store the indexes, not the actual entries payloads. All writes to RocksDB are done in a background flush thread, so the stall are not a concern here.\r\n\r\nTo recap: \r\n * `dbStorage_writeCacheMaxSizeMb` : Memory portion where payloads are accumulated before flushing. Ideally this should big enough to accumulate ~1min worth of entries\r\n * `dbStorage_rocksDB_writeBufferSizeMB` : Size of RocksDB memtable. I don't think this need to be increased from the default 64MB\r\n * `dbStorage_rocksDB_blockCacheSize` : This is the RocksDB cache, used when reading. It should be big enough to hold the \"active\" portion of database to avoid disk access to read the indexes."}}
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