[PATCH 0/6] Introduce blackhole engine

Vladimir Davydov vdavydov.dev at gmail.com
Fri Jul 20 20:43:29 MSK 2018


In the scope of #2129, we need to store deferred DELETE statements
generated during primary index compaction in the WAL so that we can
recover them after restart. This patch set introduces a new engine for
this purpose - blackhole. Spaces that use this engine may be written to,
but not read from (they don't even support creation of indexes). All
operations done on a blackhole space are logged in the WAL and hence
replayed during recovery, which is just what we need.

https://github.com/tarantool/tarantool/issues/2129
https://github.com/tarantool/tarantool/commits/dv/blackhole

Nikita Pettik (1):
  Rework memtx replace function

Vladimir Davydov (5):
  Add generic engine, space, index method stubs
  Merge sysview_index.[hc] and sysview_engine.[hc]
  txn: unify txn_stmt tuples reference counting rules
  space: call before_replace trigger even if space has no indexes
  Introduce blackhole engine

 src/box/CMakeLists.txt                   |   4 +-
 src/box/blackhole.c                      | 210 ++++++++++++++++
 src/box/{sysview_index.h => blackhole.h} |  40 ++-
 src/box/box.cc                           |   6 +-
 src/box/engine.c                         | 161 ++++++++++++
 src/box/engine.h                         |  28 +++
 src/box/index.cc                         |  13 +
 src/box/index.h                          |   3 +
 src/box/memtx_engine.c                   |  47 +---
 src/box/memtx_space.c                    | 100 +++++---
 src/box/memtx_space.h                    |  20 +-
 src/box/space.c                          | 109 +++++++--
 src/box/space.h                          |  14 ++
 src/box/{sysview_index.c => sysview.c}   | 195 +++++++++++++--
 src/box/{sysview_engine.h => sysview.h}  |  16 +-
 src/box/sysview_engine.c                 | 406 -------------------------------
 src/box/txn.c                            |  19 ++
 src/box/vinyl.c                          |  42 +---
 test/box/blackhole.result                | 177 ++++++++++++++
 test/box/blackhole.test.lua              |  64 +++++
 20 files changed, 1068 insertions(+), 606 deletions(-)
 create mode 100644 src/box/blackhole.c
 rename src/box/{sysview_index.h => blackhole.h} (69%)
 rename src/box/{sysview_index.c => sysview.c} (70%)
 rename src/box/{sysview_engine.h => sysview.h} (84%)
 delete mode 100644 src/box/sysview_engine.c
 create mode 100644 test/box/blackhole.result
 create mode 100644 test/box/blackhole.test.lua

-- 
2.11.0




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