Vyacheslav Koptilin created IGNITE-14405:
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Summary: Local persistent key-value storage (Vault)
Key: IGNITE-14405
URL: https://issues.apache.org/jira/browse/IGNITE-14405
Project: Ignite
Issue Type: New Feature
Reporter: Vyacheslav Koptilin
In order to maintain a local state of Ignite node, it is required to implement
persistent key-value storage named Vault.
The data stored in the vault is semantically divided into the following
categories:
- User-level local configuration properties (such as memory limits, network
timeouts, etc). User-level configuration properties can be written both at
runtime (not all properties will be applied at runtime, however, - some of them
will require a full node restart) and when a node is shut down (in order to be
able to change properties that prevent node startup for some reason)
- System-level private properties (such as computed local statistics,
node-local common paths, etc). System-level private properties are computed
locally based on the information available at node locally (not based on
metastorage watched values)
- System-level distributed metastorage projected properties (such as paths to
partition files, etc). System-level projected properties are associated with
one or more metastorage properties and are computed based on the local node
state and the metastorage properties values. System-level projected properties
values are semantically bound to a particular revision of the dependee
properties and must be recalculated when dependees are changed (see reliable
watch processing).
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