[tarantool-patches] Re: [tarantool-patches] [box.ctl 2/3] box.ctl: Add on_ctl_event trigger calls
Konstantin Belyavskiy
k.belyavskiy at tarantool.org
Tue Jul 31 14:40:38 MSK 2018
Hi,
overall patch looks good with minor conplains (summary)
- unused headers
- is it worth it to create a separate fiber to check if read-only condition was changed?
- test SHUTDOWN should be implemented
>Четверг, 14 июня 2018, 18:04 +03:00 от Ilya Markov <imarkov at tarantool.org>:
>
>Add following cases of triggers:
>* System space recovery. Called on finish of bootstrap or finish of join or
>snapshot recovery.
>* Local recovery. Called on finish of bootstrap or finish of recovery.
>* Read_only/read_write. Called on changes of read_only state of
>instance.
>* Shutdown. Called on controlled shutdown.
>* Replicaset_add/replicaset_remove. Called on changes in space _cluster.
>
>Errors inside triggers are logged and don't influence on instance
>behaviour.
>
>Continue #3159
>---
> src/box/alter.cc | 1 +
> src/box/box.cc | 44 ++++++-
> src/box/engine.c | 14 +++
> src/box/lua/ctl.c | 4 +-
> src/box/memtx_engine.c | 2 +-
> src/box/replication.cc | 14 +++
> test/replication/master_onctl.lua | 34 +++++
> test/replication/onctl.result | 250 +++++++++++++++++++++++++++++++++++++
> test/replication/onctl.test.lua | 105 ++++++++++++++++
> test/replication/replica_onctl.lua | 34 +++++
> test/replication/suite.cfg | 1 +
> 11 files changed, 498 insertions(+), 5 deletions(-)
> create mode 100644 test/replication/master_onctl.lua
> create mode 100644 test/replication/onctl.result
> create mode 100644 test/replication/onctl.test.lua
> create mode 100644 test/replication/replica_onctl.lua
>
>diff --git a/src/box/alter.cc b/src/box/alter.cc
>index 6f6fcb0..7ec548b 100644
>--- a/src/box/alter.cc
>+++ b/src/box/alter.cc
>@@ -52,6 +52,7 @@
> #include "identifier.h"
> #include "version.h"
> #include "sequence.h"
>
>+#include "ctl.h"
Not used.
>
>
> /**
> * chap-sha1 of empty string, i.e.
>diff --git a/src/box/box.cc b/src/box/box.cc
>index 26277e7..1de37d2 100644
>--- a/src/box/box.cc
>+++ b/src/box/box.cc
>@@ -113,6 +113,11 @@ static fiber_cond ro_cond;
> */
> static bool is_orphan = true;
>
>+/**
>+ * Fiber used for on_ctl_event trigger.
>+ */
>+static fiber *ro_checker;
>+
> /* Use the shared instance of xstream for all appliers */
> static struct xstream join_stream;
> static struct xstream subscribe_stream;
>@@ -1573,6 +1578,9 @@ box_set_replicaset_uuid(const struct tt_uuid *replicaset_uuid)
> void
> box_free(void)
> {
>+ if (run_on_ctl_event_trigger_type(CTL_EVENT_SHUTDOWN) < 0)
>+ say_error("ctl_trigger error in shutdown: %s",
>+ diag_last_error(diag_get())->errmsg);
> /*
> * See gh-584 "box_free() is called even if box is not
> * initialized
>@@ -1592,7 +1600,8 @@ box_free(void)
> engine_shutdown();
> wal_thread_stop();
> }
>-
>+ if (!fiber_is_dead(ro_checker))
>+ fiber_cancel(ro_checker);
> fiber_cond_destroy(&ro_cond);
> }
>
>@@ -1693,6 +1702,10 @@ bootstrap_from_master(struct replica *master)
> engine_begin_initial_recovery_xc(NULL);
> applier_resume_to_state(applier, APPLIER_FINAL_JOIN, TIMEOUT_INFINITY);
>
>+ if (run_on_ctl_event_trigger_type(CTL_EVENT_SYSTEM_SPACE_RECOVERY) < 0)
>+ say_error("ctl_trigger error in system space recovery: %s",
>+ diag_last_error(diag_get())->errmsg);
>+
> /*
> * Process final data (WALs).
> */
>@@ -1755,11 +1768,35 @@ tx_prio_cb(struct ev_loop *loop, ev_watcher *watcher, int events)
> cbus_process(endpoint);
> }
>
>+static int
>+check_ro_f(MAYBE_UNUSED va_list ap)
>+{
>+ double timeout = TIMEOUT_INFINITY;
>+ struct on_ctl_event_ctx ctx;
>+ memset(&ctx, 0, sizeof(ctx));
>+ while (true) {
>+ if (box_wait_ro(!box_is_ro(), timeout) != 0) {
>+ if (fiber_is_cancelled())
>+ break;
>+ else
>+ return -1;
>+ }
>+ if (run_on_ctl_event_trigger_type(
>+ box_is_ro() ? CTL_EVENT_READ_ONLY:
>+ CTL_EVENT_READ_WRITE) < 0)
>+ say_error("ctl_trigger error in %s: %s",
>+ box_is_ro() ? "read_only" :"read_write",
>+ diag_last_error(diag_get())->errmsg);
>+ }
>+ return 0;
>+}
>+
Is it worth it to create a separate fiber? May be check it near or inside fiber_cond_broadcast(&ro_cond)?
>
> void
> box_init(void)
> {
> fiber_cond_create(&ro_cond);
>-
>+ ro_checker = fiber_new_xc("check_ro", check_ro_f);
>+ fiber_start(ro_checker, NULL);
> user_cache_init();
> /*
> * The order is important: to initialize sessions,
>@@ -1885,6 +1922,9 @@ box_cfg_xc(void)
> */
> memtx_engine_recover_snapshot_xc(memtx,
> &last_checkpoint_vclock);
>+ if (run_on_ctl_event_trigger_type(CTL_EVENT_SYSTEM_SPACE_RECOVERY) < 0)
>+ say_error("ctl_trigger error in system space recovery: %s",
>+ diag_last_error(diag_get())->errmsg);
>
> engine_begin_final_recovery_xc();
> recovery_follow_local(recovery, &wal_stream.base, "hot_standby",
>diff --git a/src/box/engine.c b/src/box/engine.c
>index 82293fd..fa78753 100644
>--- a/src/box/engine.c
>+++ b/src/box/engine.c
>@@ -29,10 +29,12 @@
> * SUCH DAMAGE.
> */
> #include "engine.h"
>+#include "ctl.h"
>
> #include <stdint.h>
> #include <string.h>
> #include <small/rlist.h>
>
>+#include <fiber.h>
Not used.
>
> RLIST_HEAD(engines);
>
>@@ -73,6 +75,14 @@ engine_bootstrap(void)
> if (engine->vtab->bootstrap(engine) != 0)
> return -1;
> }
>+ if (run_on_ctl_event_trigger_type(CTL_EVENT_SYSTEM_SPACE_RECOVERY) < 0)
>+ say_error("ctl_trigger error in system space recovery: %s",
>+ diag_last_error(diag_get())->errmsg);
>+
>+ if (run_on_ctl_event_trigger_type(CTL_EVENT_LOCAL_RECOVERY) < 0)
>+ say_error("ctl_trigger error in local recovery: %s",
>+ diag_last_error(diag_get())->errmsg);
>+
> return 0;
> }
>
>@@ -111,6 +121,10 @@ engine_end_recovery(void)
> if (engine->vtab->end_recovery(engine) != 0)
> return -1;
> }
>+ if (run_on_ctl_event_trigger_type(CTL_EVENT_LOCAL_RECOVERY) < 0)
>+ say_error("ctl_trigger error in local recovery: %s",
>+ diag_last_error(diag_get())->errmsg);
>+
> return 0;
> }
>
>diff --git a/src/box/lua/ctl.c b/src/box/lua/ctl.c
>index 52f320a..5bd9be3 100644
>--- a/src/box/lua/ctl.c
>+++ b/src/box/lua/ctl.c
>@@ -122,8 +122,8 @@ box_lua_ctl_init(struct lua_State *L)
> lua_pushnumber(L, CTL_EVENT_SHUTDOWN);
> lua_setfield(L, -2, "SHUTDOWN");
> lua_pushnumber(L, CTL_EVENT_REPLICASET_ADD);
>- lua_setfield(L, -2, "CTL_EVENT_REPLICASET_ADD");
>+ lua_setfield(L, -2, "REPLICASET_ADD");
> lua_pushnumber(L, CTL_EVENT_REPLICASET_REMOVE);
>- lua_setfield(L, -2, "CTL_EVENT_REPLICASET_REMOVE");
>+ lua_setfield(L, -2, "REPLICASET_REMOVE");
> lua_pop(L, 2); /* box, ctl */
> }
>diff --git a/src/box/memtx_engine.c b/src/box/memtx_engine.c
>index fac84ce..e737ea3 100644
>--- a/src/box/memtx_engine.c
>+++ b/src/box/memtx_engine.c
>@@ -48,6 +48,7 @@
> #include "replication.h"
> #include "schema.h"
> #include "gc.h"
>
>+#include "ctl.h"
Also not used.
>
> static void
> txn_on_yield_or_stop(struct trigger *trigger, void *event)
>@@ -197,7 +198,6 @@ memtx_engine_recover_snapshot(struct memtx_engine *memtx,
> */
> if (!xlog_cursor_is_eof(&cursor))
> panic("snapshot `%s' has no EOF marker", filename);
>-
> return 0;
> }
>
>diff --git a/src/box/replication.cc b/src/box/replication.cc
>index c1e1769..75aecd0 100644
>--- a/src/box/replication.cc
>+++ b/src/box/replication.cc
>@@ -41,6 +41,7 @@
> #include "error.h"
> #include "relay.h"
> #include "vclock.h" /* VCLOCK_MAX */
>+#include "ctl.h"
>
> uint32_t instance_id = REPLICA_ID_NIL;
> struct tt_uuid INSTANCE_UUID;
>@@ -172,6 +173,12 @@ replicaset_add(uint32_t replica_id, const struct tt_uuid *replica_uuid)
> replica->uuid = *replica_uuid;
> replica_hash_insert(&replicaset.hash, replica);
> replica_set_id(replica, replica_id);
>+ struct on_ctl_event_ctx on_ctl_ctx;
>+ on_ctl_ctx.type = CTL_EVENT_REPLICASET_ADD;
>+ on_ctl_ctx.replica_id = replica_id;
>+ if (run_on_ctl_event_triggers(&on_ctl_ctx) < 0)
>+ say_error("ctl_trigger error in replica add: %s",
>+ diag_last_error(diag_get())->errmsg);
> return replica;
> }
>
>@@ -203,12 +210,19 @@ replica_clear_id(struct replica *replica)
> * Some records may arrive later on due to asynchronous nature of
> * replication.
> */
>+ struct on_ctl_event_ctx on_ctl_ctx;
>+ on_ctl_ctx.type = CTL_EVENT_REPLICASET_REMOVE;
>+ on_ctl_ctx.replica_id = replica->id;
>+
> replicaset.replica_by_id[replica->id] = NULL;
> replica->id = REPLICA_ID_NIL;
> if (replica_is_orphan(replica)) {
> replica_hash_remove(&replicaset.hash, replica);
> replica_delete(replica);
> }
>+ if (run_on_ctl_event_triggers(&on_ctl_ctx) < 0)
>+ say_error("ctl_trigger error in replica remove: %s",
>+ diag_last_error(diag_get())->errmsg);
> }
>
> static void
>diff --git a/test/replication/master_onctl.lua b/test/replication/master_onctl.lua
>new file mode 100644
>index 0000000..e0eb39a
>--- /dev/null
>+++ b/test/replication/master_onctl.lua
>@@ -0,0 +1,34 @@
>+#!/usr/bin/env tarantool
>+os = require('os')
>+
>+SYSTEM_SPACE_RECOVERY = 0
>+LOCAL_RECOVERY = 0
>+READ_ONLY = 0
>+READ_WRITE = 0
>+REPLICASET_ADD = {}
>+REPLICASET_REMOVE = {}
>+
>+local function onctl(ctx)
>+ if ctx.type == box.ctl.event.SYSTEM_SPACE_RECOVERY then
>+ SYSTEM_SPACE_RECOVERY = SYSTEM_SPACE_RECOVERY + 1
>+ elseif ctx.type == box.ctl.event.LOCAL_RECOVERY then
>+ LOCAL_RECOVERY = LOCAL_RECOVERY + 1
>+ elseif ctx.type == box.ctl.event.READ_ONLY then
>+ READ_ONLY = READ_ONLY + 1
>+ elseif ctx.type == box.ctl.event.READ_WRITE then
>+ READ_WRITE = READ_WRITE + 1
>+ elseif ctx.type == box.ctl.event.REPLICASET_ADD then
>+ table.insert(REPLICASET_ADD, ctx.replica_id)
>+ elseif ctx.type == box.ctl.event.REPLICASET_REMOVE then
>+ table.insert(REPLICASET_REMOVE, ctx.replica_id)
>+ end
>+end
>+
>+box.cfg({
>+ listen = os.getenv("LISTEN"),
>+ memtx_memory = 107374182,
>+ replication_connect_timeout = 0.5,
>+ on_ctl_event = onctl,
>+})
>+
>+require('console').listen(os.getenv('ADMIN'))
>diff --git a/test/replication/onctl.result b/test/replication/onctl.result
>new file mode 100644
>index 0000000..19b3e67
>--- /dev/null
>+++ b/test/replication/onctl.result
>@@ -0,0 +1,250 @@
>+env = require('test_run')
>+---
>+...
>+test_run = env.new()
>+---
>+...
>+test_run:cmd("create server master with script='replication/master_onctl.lua'")
>+---
>+- true
>+...
>+test_run:cmd("create server replica with rpl_master=master, script='replication/replica_onctl.lua'")
>+---
>+- true
>+...
>+test_run:cmd("start server master")
>+---
>+- true
>+...
>+test_run:cmd("switch master")
>+---
>+- true
>+...
>+box.schema.user.grant('guest', 'replication')
>+---
>+...
>+SYSTEM_SPACE_RECOVERY
>+---
>+- 1
>+...
>+LOCAL_RECOVERY
>+---
>+- 1
>+...
>+READ_ONLY
>+---
>+- 0
>+...
>+READ_WRITE
>+---
>+- 1
>+...
>+-- must be two entries. First from bootstrap.snap, second for current instance.
>+REPLICASET_ADD
>+---
>+- - 1
>+ - 1
>+...
>+-- must be one entry. Deletion of initial tuple in _cluster space.
>+REPLICASET_REMOVE
>+---
>+- - 1
>+...
>+REPLICASET_ADD = {}
>+---
>+...
>+REPLICASET_REMOVE = {}
>+---
>+...
>+new_replica_id = 0
>+---
>+...
>+deleted_replica_id = 0
>+---
>+...
>+test_run:cmd("setopt delimiter ';'")
>+---
>+- true
>+...
>+function on_ctl_new(ctx)
>+ if ctx.type == box.ctl.event.REPLICASET_ADD then
>+ new_replica_id = ctx.replica_id
>+ elseif ctx.type == box.ctl.event.REPLICASET_REMOVE then
>+ deleted_replica_id = ctx.replica_id
>+ end
>+end;
>+---
>+...
>+test_run:cmd("setopt delimiter ''");
>+---
>+- true
>+...
>+_ = box.ctl.on_ctl_event(on_ctl_new)
>+---
>+...
>+test_run:cmd("start server replica")
>+---
>+- true
>+...
>+REPLICASET_ADD
>+---
>+- - 2
>+...
>+REPLICASET_REMOVE
>+---
>+- []
>+...
>+new_replica_id
>+---
>+- 2
>+...
>+deleted_replica_id
>+---
>+- 0
>+...
>+test_run:cmd("switch replica")
>+---
>+- true
>+...
>+test_run:cmd("setopt delimiter ';'")
>+---
>+- true
>+...
>+function on_ctl_shutdown(ctx)
>+ if ctx.type == box.ctl.event.SHUTDOWN then
>+ require("log").info("test replica shutdown")
>+ end
>+end;
>+---
>+...
>+function on_ctl_error(ctx)
>+ error("trigger error")
>+end;
>+---
>+...
>+test_run:cmd("setopt delimiter ''");
>+---
>+- true
>+...
>+SYSTEM_SPACE_RECOVERY
>+---
>+- 1
>+...
>+LOCAL_RECOVERY
>+---
>+- 1
>+...
>+READ_ONLY
>+---
>+- 0
>+...
>+READ_WRITE
>+---
>+- 1
>+...
>+REPLICASET_ADD
>+---
>+- - 2
>+...
>+REPLICASET_REMOVE
>+---
>+- []
>+...
>+box.cfg{read_only = true}
>+---
>+...
>+fiber = require("fiber")
>+---
>+...
>+while READ_ONLY == 0 do fiber.sleep(0.001) end
>+---
>+...
>+READ_ONLY
>+---
>+- 1
>+...
>+box.cfg{on_ctl_event = on_ctl_error}
>+---
>+...
>+box.cfg{read_only = false}
>+---
>+...
>+test_run:grep_log('replica', 'ctl_trigger error')
>+---
>+- ctl_trigger error
>+...
>+box.cfg{on_ctl_event = {box.NULL, on_ctl_error}}
>+---
>+...
>+box.cfg{on_ctl_event = on_ctl_shutdown}
>+---
>+...
>+test_run:cmd("restart server replica")
>+-- TODO: test SHUTDOWN, when it is possible to grep logs of killed replica.
>+--test_run:grep_log('replica', 'test replica shutdown')
>+test_run:cmd("switch master")
>+---
>+- true
>+...
>+box.schema.user.revoke('guest', 'replication')
>+---
>+...
>+_ = box.space._cluster:delete{2}
>+---
>+...
>+SYSTEM_SPACE_RECOVERY
>+---
>+- 1
>+...
>+LOCAL_RECOVERY
>+---
>+- 1
>+...
>+READ_ONLY
>+---
>+- 0
>+...
>+READ_WRITE
>+---
>+- 1
>+...
>+REPLICASET_ADD
>+---
>+- - 2
>+...
>+REPLICASET_REMOVE
>+---
>+- - 2
>+...
>+new_replica_id
>+---
>+- 2
>+...
>+deleted_replica_id
>+---
>+- 2
>+...
>+box.ctl.on_ctl_event(nil, on_ctl_new)
>+---
>+...
>+-- cleanup
>+test_run:cmd("switch default")
>+---
>+- true
>+...
>+test_run:cmd("stop server master")
>+---
>+- true
>+...
>+test_run:cmd("cleanup server master")
>+---
>+- true
>+...
>+test_run:cmd("stop server replica")
>+---
>+- true
>+...
>+test_run:cmd("cleanup server replica")
>+---
>+- true
>+...
>diff --git a/test/replication/onctl.test.lua b/test/replication/onctl.test.lua
>new file mode 100644
>index 0000000..ff6a898
>--- /dev/null
>+++ b/test/replication/onctl.test.lua
>@@ -0,0 +1,105 @@
>+env = require('test_run')
>+test_run = env.new()
>+
>+test_run:cmd("create server master with script='replication/master_onctl.lua'")
>+test_run:cmd("create server replica with rpl_master=master, script='replication/replica_onctl.lua'")
>+
>+test_run:cmd("start server master")
>+test_run:cmd("switch master")
>+box.schema.user.grant('guest', 'replication')
>+
>+SYSTEM_SPACE_RECOVERY
>+LOCAL_RECOVERY
>+READ_ONLY
>+READ_WRITE
>+-- must be two entries. First from bootstrap.snap, second for current instance.
>+REPLICASET_ADD
>+-- must be one entry. Deletion of initial tuple in _cluster space.
>+REPLICASET_REMOVE
>+
>+REPLICASET_ADD = {}
>+REPLICASET_REMOVE = {}
>+
>+new_replica_id = 0
>+deleted_replica_id = 0
>+
>+test_run:cmd("setopt delimiter ';'")
>+function on_ctl_new(ctx)
>+ if ctx.type == box.ctl.event.REPLICASET_ADD then
>+ new_replica_id = ctx.replica_id
>+ elseif ctx.type == box.ctl.event.REPLICASET_REMOVE then
>+ deleted_replica_id = ctx.replica_id
>+ end
>+end;
>+test_run:cmd("setopt delimiter ''");
>+
>+_ = box.ctl.on_ctl_event(on_ctl_new)
>+
>+test_run:cmd("start server replica")
>+
>+REPLICASET_ADD
>+REPLICASET_REMOVE
>+
>+new_replica_id
>+deleted_replica_id
>+
>+test_run:cmd("switch replica")
>+
>+test_run:cmd("setopt delimiter ';'")
>+function on_ctl_shutdown(ctx)
>+ if ctx.type == box.ctl.event.SHUTDOWN then
>+ require("log").info("test replica shutdown")
>+ end
>+end;
>+
>+function on_ctl_error(ctx)
>+ error("trigger error")
>+end;
>+
>+test_run:cmd("setopt delimiter ''");
>+
>+SYSTEM_SPACE_RECOVERY
>+LOCAL_RECOVERY
>+READ_ONLY
>+READ_WRITE
>+REPLICASET_ADD
>+REPLICASET_REMOVE
>+
>+box.cfg{read_only = true}
>+fiber = require("fiber")
>+while READ_ONLY == 0 do fiber.sleep(0.001) end
>+READ_ONLY
>+
>+box.cfg{on_ctl_event = on_ctl_error}
>+box.cfg{read_only = false}
>+test_run:grep_log('replica', 'ctl_trigger error')
>+box.cfg{on_ctl_event = {box.NULL, on_ctl_error}}
>+box.cfg{on_ctl_event = on_ctl_shutdown}
>+
>+test_run:cmd("restart server replica")
>+-- TODO: test SHUTDOWN, when it is possible to grep logs of killed replica.
>+--test_run:grep_log('replica', 'test replica shutdown')
It should be done
>
>+
>+
>+test_run:cmd("switch master")
>+box.schema.user.revoke('guest', 'replication')
>+_ = box.space._cluster:delete{2}
>+
>+SYSTEM_SPACE_RECOVERY
>+LOCAL_RECOVERY
>+READ_ONLY
>+READ_WRITE
>+REPLICASET_ADD
>+REPLICASET_REMOVE
>+
>+new_replica_id
>+deleted_replica_id
>+
>+box.ctl.on_ctl_event(nil, on_ctl_new)
>+
>+-- cleanup
>+test_run:cmd("switch default")
>+test_run:cmd("stop server master")
>+test_run:cmd("cleanup server master")
>+test_run:cmd("stop server replica")
>+test_run:cmd("cleanup server replica")
>diff --git a/test/replication/replica_onctl.lua b/test/replication/replica_onctl.lua
>new file mode 100644
>index 0000000..d6ce73c
>--- /dev/null
>+++ b/test/replication/replica_onctl.lua
>@@ -0,0 +1,34 @@
>+#!/usr/bin/env tarantool
>+
>+SYSTEM_SPACE_RECOVERY = 0
>+LOCAL_RECOVERY = 0
>+READ_ONLY = 0
>+READ_WRITE = 0
>+REPLICASET_ADD = {}
>+REPLICASET_REMOVE = {}
>+
>+local function onctl(ctx)
>+ if ctx.type == box.ctl.event.SYSTEM_SPACE_RECOVERY then
>+ SYSTEM_SPACE_RECOVERY = SYSTEM_SPACE_RECOVERY + 1
>+ elseif ctx.type == box.ctl.event.LOCAL_RECOVERY then
>+ LOCAL_RECOVERY = LOCAL_RECOVERY + 1
>+ elseif ctx.type == box.ctl.event.READ_ONLY then
>+ READ_ONLY = READ_ONLY + 1
>+ elseif ctx.type == box.ctl.event.READ_WRITE then
>+ READ_WRITE = READ_WRITE + 1
>+ elseif ctx.type == box.ctl.event.REPLICASET_ADD then
>+ table.insert(REPLICASET_ADD, ctx.replica_id)
>+ elseif ctx.type == box.ctl.event.REPLICASET_REMOVE then
>+ table.insert(REPLICASET_REMOVE, ctx.replica_id)
>+ end
>+end
>+
>+box.cfg({
>+ listen = os.getenv("LISTEN"),
>+ replication = os.getenv("MASTER"),
>+ memtx_memory = 107374182,
>+ replication_connect_timeout = 0.5,
>+ on_ctl_event = onctl,
>+})
>+
>+require('console').listen(os.getenv('ADMIN'))
>diff --git a/test/replication/suite.cfg b/test/replication/suite.cfg
>index 95e94e5..365a825 100644
>--- a/test/replication/suite.cfg
>+++ b/test/replication/suite.cfg
>@@ -6,6 +6,7 @@
> "wal_off.test.lua": {},
> "hot_standby.test.lua": {},
> "rebootstrap.test.lua": {},
>+ "onctl.test.lua": {},
> "*": {
> "memtx": {"engine": "memtx"},
> "vinyl": {"engine": "vinyl"}
>--
>2.7.4
>
>
Best regards,
Konstantin Belyavskiy
k.belyavskiy at tarantool.org
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