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|
test_run = require('test_run').new()
---
...
engine = test_run:get_cfg('engine')
---
...
_ = box.space._session_settings:update('sql_default_engine', {{'=', 2, engine}})
---
...
fiber = require('fiber')
---
...
-- View reference counters are incremented before firing
-- on_commit triggers (i.e. before being written into WAL), so
-- it is impossible to drop a space referenced by a created, but
-- *still* not yet committed view.
--
box.execute('CREATE TABLE t1(id INT PRIMARY KEY)')
---
- row_count: 1
...
function create_view() box.execute('CREATE VIEW v1 AS SELECT * FROM t1') end
---
...
function drop_index_t1() box.space._index:delete{box.space.T1.id, 0} end
---
...
function drop_space_t1() box.space._space:delete{box.space.T1.id} end
---
...
box.error.injection.set("ERRINJ_WAL_DELAY", true)
---
- ok
...
f1 = fiber.create(create_view)
---
...
f2 = fiber.create(drop_index_t1)
---
...
f3 = fiber.create(drop_space_t1)
---
...
box.error.injection.set("ERRINJ_WAL_DELAY", false)
---
- ok
...
fiber.sleep(0.1)
---
...
box.space.T1 ~= nil
---
- true
...
box.space.V1 ~= nil
---
- true
...
--
-- In the same way, we have to drop all referenced spaces before
-- dropping view, since view reference counter of space to be
-- dropped is checked before firing on_commit trigger.
--
box.execute('CREATE TABLE t2 (id INT PRIMARY KEY)')
---
- row_count: 1
...
box.execute('CREATE VIEW view2 AS SELECT * FROM t2')
---
- row_count: 1
...
function drop_view() box.space._space:delete{box.space.VIEW2.id} end
---
...
function drop_index_t2() box.space._index:delete{box.space.T2.id, 0} end
---
...
function drop_space_t2() box.space._space:delete{box.space.T2.id} end
---
...
box.error.injection.set("ERRINJ_WAL_DELAY", true)
---
- ok
...
f1 = fiber.create(drop_index_t2)
---
...
f2 = fiber.create(drop_space_t2)
---
...
f3 = fiber.create(drop_view)
---
...
box.error.injection.set("ERRINJ_WAL_DELAY", false)
---
- ok
...
fiber.sleep(0.1)
---
...
box.space._space:get{box.space.T2.id}['name']
---
- T2
...
box.space.V2
---
- null
...
-- Since deletion via Lua doesn't remove entry from
-- SQL data dictionary we have to restart instance to clean up.
--
test_run:cmd('restart server default with cleanup=1')
|
