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Today a snapshot repository does not have a well-defined identity. It can be reregistered with a different cluster under a different name, and can even be registered with multiple clusters in readonly mode. This presents problems for cases where we need to refer to a specific snapshot in a globally-unique fashion. Today we rely on the repository being registered under the same name on every cluster, but this is not a safe assumption. This commit adds a UUID that can be used to uniquely identify a repository. The UUID is stored in the top-level index blob, represented by `RepositoryData`, and is also usually copied into the `RepositoryMetadata` that represents the repository in the cluster state. The repository UUID is exposed in the get-repositories API; other more meaningful consumers will be added in due course. |
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| cluster/config | ||
| java/org/elasticsearch/smoketest | ||
| resources | ||