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doc: add RBNO to glossary

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This commit adds Repair Based Node Operations
to the ScyllaDB glossary.

Fixes https://github.com/scylladb/scylladb/issues/11959

Closes scylladb/scylladb#15522
This commit is contained in:
Anna Stuchlik
2023-09-22 15:10:07 +02:00
committed by Botond Dénes
parent 652153c291
commit 4afe2b9d9f
1 changed files with 8 additions and 0 deletions
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docs/reference/glossary.rst
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@@ -119,6 +119,14 @@ Glossary
Replication Factor (RF)
The total number of replica nodes across a given cluster. An :abbr:`RF (Replication Factor)` of 1 means that the data will only exist on a single node in the cluster and will not have any fault tolerance. This number is a setting defined for each keyspace. All replicas share equal priority; there are no primary or master replicas. An RF for any table, can be defined for each :abbr:`DC (Data Center)`. See :doc:`Fault Tolerance </architecture/architecture-fault-tolerance>`.
Repair Based Node Operations (RBNO)
:abbr:`RBNO (Repair Based Node Operations)` is an internal ScyllaDB mechanism that uses repair to
synchronize data between the nodes in a cluster instead of using streaming. RBNO significantly
improve database performance and data consistency.
RBNO is enabled by default for a subset node operations.
See :doc:`Repair Based Node Operations </operating-scylla/procedures/cluster-management/repair-based-node-operation>` for details.
Shard
Each Scylla node is internally split into *shards*, an independent thread bound to a dedicated core.
Each shard of data is allotted CPU, RAM, persistent storage, and networking resources which it uses as efficiently as possible.