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ASF GitHub Bot commented on BOOKKEEPER-963: ------------------------------------------- Github user reddycharan commented on the issue: https://github.com/apache/bookkeeper/pull/71 new BookieShell command - ExpandStorageCmd (expandstorage) has been added by @rithin-shetty , it should also be updated as part of this change BOOKKEEPER-948: Provide an option to add more ledger/index directories to a bookie https://github.com/apache/bookkeeper/commit/66515e74d3fb03d21cad4eccb446a90ab7e94597 > Allow to use multiple journals in bookie > ---------------------------------------- > > Key: BOOKKEEPER-963 > URL: https://issues.apache.org/jira/browse/BOOKKEEPER-963 > Project: Bookkeeper > Issue Type: Improvement > Reporter: Matteo Merli > Assignee: Matteo Merli > Fix For: 4.5.0 > > > By configuring multiple journals, we can take advantage of the IO of multiple > disks to increase the write throughput of a single bookie. > Each journal will have its own journal and sync threads and writes will be > assigned to a particular journal by hashing on the ledger id. > In addition to using multiple physical disks, there can improvements even by > using multiple journal on a single SSD device, because these disks can handle > well multiple concurrent writes in different blocks of the disk. -- This message was sent by Atlassian JIRA (v6.3.4#6332)