[tarantool-patches] [PATCH v3 00/14] Parallel applier

[Georgy Kirichenko]

This patch set introduces parallel applier processing on top of
asynchronous transaction feature with corresponding fixes essential
for the patch. 

This patch set is focused on three major options:
 1. To make a transaction and a fiber independent from one another.
 2. To make a transaction commit asynchronous.
 3. To allow applier write transaction in parallel.

Changes in v3:
 - Add a parallel applier implementation
 - Store transaction related data such as ddl trigger to a transaction
   memory region
 - Fix privileges defining
 - Minor fixes according to review

Changes in v2:
 - Three patches are merged to master
 - Replicated rows are also copied to txn region
 - A fiber to process tx_prio endpoint
 - Engine commit and triggers are changed in order
 - Minor fixes according to review


Georgy Kirichenko (14):
  txn: Fire a trigger after a transaction finalization
  ddl: synchronize privileges cache with actual data state.
  txn: transaction memory allocation
  ddl: place alter structures onto a txn memory region
  txn: get rid of autocommit from a txn structure
  txn: get rid of fiber_gc from txn_rollback
  wal: remove fiber from a journal_entry structure
  wal: enable asyncronous wal writes
  wal: a dedicated wal scheduling fiber
  core: latch_unlock_external routine
  txn: introduce asynchronous txn commit
  txn: handle fiber stop event at transaction level
  applier: apply transaction in parallel
  test: fix flaky test

 src/box/alter.cc                      |  47 ++-
 src/box/applier.cc                    | 395 ++++++++++++++++++--------
 src/box/applier.h                     |   4 +
 src/box/box.cc                        | 131 +++++++--
 src/box/call.c                        |  22 +-
 src/box/index.cc                      |  10 +-
 src/box/journal.c                     |  34 ++-
 src/box/journal.h                     |  51 +++-
 src/box/memtx_engine.c                |  16 +-
 src/box/memtx_space.c                 |   8 +-
 src/box/sql.c                         |   2 +-
 src/box/txn.c                         | 294 +++++++++++--------
 src/box/txn.h                         |  45 ++-
 src/box/vinyl.c                       |  18 +-
 src/box/vy_log.c                      |   2 +-
 src/box/vy_scheduler.c                |  16 +-
 src/box/wal.c                         | 137 +++++++--
 src/lib/core/latch.h                  |  13 +-
 test/box/ddl.result                   |  37 +++
 test/box/ddl.test.lua                 |  15 +
 test/replication/sync.result          |   7 +-
 test/replication/sync.test.lua        |   4 +-
 test/replication/transaction.result   |  16 +-
 test/replication/transaction.test.lua |   7 +-
 24 files changed, 939 insertions(+), 392 deletions(-)

-- 
2.21.0