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zrepl/rpc/versionhandshake
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Christian Schwarz 30cdc1430e replication + endpoint: replication guarantees: guarantee_{resumability,incremental,nothing} 
This commit

- adds a configuration in which no step holds, replication cursors, etc. are created
- removes the send.step_holds.disable_incremental setting
- creates a new config option `replication` for active-side jobs
- adds the replication.protection.{initial,incremental} settings, each
  of which can have values
    - `guarantee_resumability`
    - `guarantee_incremental`
    - `guarantee_nothing`
  (refer to docs/configuration/replication.rst for semantics)

The `replication` config from an active side is sent to both endpoint.Sender and endpoint.Receiver
for each replication step. Sender and Receiver then act accordingly.

For `guarantee_incremental`, we add the new `tentative-replication-cursor` abstraction.
The necessity for that abstraction is outlined in https://github.com/zrepl/zrepl/issues/340.

fixes https://github.com/zrepl/zrepl/issues/340
2020-07-26 20:32:35 +02:00
..
versionhandshake_test.go format source tree using goimports 2019-03-22 19:41:12 +01:00
versionhandshake_transport_wrappers.go format source tree using goimports 2019-03-22 19:41:12 +01:00
versionhandshake.go replication + endpoint: replication guarantees: guarantee_{resumability,incremental,nothing} 2020-07-26 20:32:35 +02:00