Re: [tarantool-patches] [PATCH 6/6] Introduce replica local spaces

[Vladislav Shpilevoy <v.shpilevoy@tarantool.org>]

On 13/06/2018 19:10, Vladimir Davydov wrote:
> This patch introduces a new space option, is_local, which if specified
> on space creation will render all changes done locally to the space
> invisible to other replicas. The option can only be set on space
> creation and cannot be altered.
> 
> Technically, to support this feature, we introduce a new header flag,
> IPROTO_IS_LOCAL, which is set for all rows corresponding to replica
> local spaces both in xlog and in snap. Relay won't send snapshot rows
> that are marked local. As for xlog rows, it will transform them to
> IPROTO_NOP so as to promote vclock on the replica without doing any
> actual data modification.
> 
> The feature is currently supported for memtx spaces only, but it should
> be easy to implement it for vinyl spaces as well.
> 
> Closes #3443

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> ---
>   src/box/alter.cc                       |   4 +
>   src/box/iproto_constants.c             |   4 +-
>   src/box/iproto_constants.h             |   1 +
>   src/box/lua/schema.lua                 |   9 +-
>   src/box/lua/space.cc                   |   5 ++
>   src/box/lua/xlog.c                     |   5 ++
>   src/box/memtx_engine.c                 |   8 +-
>   src/box/relay.cc                       |  17 +++-
>   src/box/space.h                        |  12 ++-
>   src/box/space_def.c                    |   2 +
>   src/box/space_def.h                    |   5 ++
>   src/box/txn.c                          |   3 +
>   src/box/vinyl.c                        |   5 ++
>   src/box/xrow.c                         |   9 ++
>   src/box/xrow.h                         |   1 +
>   test/engine/iterator.result            |   2 +-
>   test/replication/local_spaces.result   | 159 +++++++++++++++++++++++++++++++++
>   test/replication/local_spaces.test.lua |  54 +++++++++++
>   test/replication/suite.cfg             |   1 +
>   test/vinyl/ddl.result                  |   5 ++
>   test/vinyl/ddl.test.lua                |   3 +
>   21 files changed, 304 insertions(+), 10 deletions(-)
>   create mode 100644 test/replication/local_spaces.result
>   create mode 100644 test/replication/local_spaces.test.lua
>