[PATCH v3 0/2] memtx: add yields during index build

[Serge Petrenko]

https://github.com/tarantool/tarantool/issues/3976
https://github.com/tarantool/tarantool/tree/sp/gh-3976-background-index-build

This patchset makes memtx engine yield during index build, which prevents it
from stalling the event loop, and moves appropriate test cases from vinyl suite,
where such a feature was implemented earlier, to engine suite.

The first patch introduces changes in index build mechanism
The second patch adds necessary tests

Changes in v3:
  - split the patch into two,
    the second one moving appropriate
    tests from vinyl to engine suite
  - add a docbot request to the
    first patch
  - ensure index unique constraints
    are checked in on_replace triggers
  - fix tuple comparsion in on_replace
    triggers

Changes in v2:
  - add an on_replace trigger
    to handle concurrent replaces
    while index build yields
  - modify test case slightly,
    test concurrent replaces.

Serge Petrenko (2):
  memtx: add yields during index build
  test: move background index build test to engine suite from vinyl

 src/box/memtx_space.c    | 102 +++++++++++++++++++
 src/box/vinyl.c          |   8 ++
 src/lib/core/errinj.h    |   1 +
 test/box/errinj.result   |   2 +
 test/engine/ddl.result   | 215 +++++++++++++++++++++++++++++++++++++++
 test/engine/ddl.test.lua | 121 ++++++++++++++++++++++
 test/vinyl/ddl.result    | 118 ---------------------
 test/vinyl/ddl.test.lua  |  70 -------------
 8 files changed, 449 insertions(+), 188 deletions(-)

-- 
2.20.1 (Apple Git-117)