[Tarantool-patches] [PATCH 2/2] test: add a test for wal_cleanup_delay option

[Cyrill Gorcunov via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

Part-of #5806

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 test/replication/gh-5806-master.lua           |  13 +
 test/replication/gh-5806-slave.lua            |  13 +
 test/replication/gh-5806-xlog-cleanup.result  | 336 ++++++++++++++++++
 .../replication/gh-5806-xlog-cleanup.test.lua | 148 ++++++++
 4 files changed, 510 insertions(+)
 create mode 100644 test/replication/gh-5806-master.lua
 create mode 100644 test/replication/gh-5806-slave.lua
 create mode 100644 test/replication/gh-5806-xlog-cleanup.result
 create mode 100644 test/replication/gh-5806-xlog-cleanup.test.lua

diff --git a/test/replication/gh-5806-master.lua b/test/replication/gh-5806-master.lua
new file mode 100644
index 000000000..0404965d3
--- /dev/null
+++ b/test/replication/gh-5806-master.lua
@@ -0,0 +1,13 @@
+#!/usr/bin/env tarantool
+
+require('console').listen(os.getenv('ADMIN'))
+
+function func_xlog_snap(space, value)
+    space:insert(value)
+    box.snapshot()
+end
+
+box.cfg({
+    listen              = os.getenv("LISTEN"),
+    wal_cleanup_delay   = tonumber(arg[1]) or 0,
+})
diff --git a/test/replication/gh-5806-slave.lua b/test/replication/gh-5806-slave.lua
new file mode 100644
index 000000000..917dbb1ae
--- /dev/null
+++ b/test/replication/gh-5806-slave.lua
@@ -0,0 +1,13 @@
+#!/usr/bin/env tarantool
+
+require('console').listen(os.getenv('ADMIN'))
+
+function func_xlog_snap(space, value)
+    space:insert(value)
+    box.snapshot()
+end
+
+box.cfg({
+    listen              = os.getenv("LISTEN"),
+    replication         = os.getenv("MASTER"),
+})
diff --git a/test/replication/gh-5806-xlog-cleanup.result b/test/replication/gh-5806-xlog-cleanup.result
new file mode 100644
index 000000000..97355a8bf
--- /dev/null
+++ b/test/replication/gh-5806-xlog-cleanup.result
@@ -0,0 +1,336 @@
+-- test-run result file version 2
+--
+-- gh-5806: defer xlog cleanup to keep xlogs until
+-- replicas present in "_cluster" are connected.
+-- Otherwise we are getting XlogGapError since
+-- master might go far forwad from replica and
+-- replica won't be able to connect without full
+-- rebootstrap.
+--
+
+fiber = require('fiber')
+ | ---
+ | ...
+test_run = require('test_run').new()
+ | ---
+ | ...
+engine = test_run:get_cfg('engine')
+ | ---
+ | ...
+
+--
+-- Case 1.
+--
+-- First lets make sure we're getting XlogGapError in
+-- case if wal_cleanup_delay is not used.
+--
+
+test_run:cmd('create server master with script="replication/gh-5806-master.lua"')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server master with wait=True, wait_load=True')
+ | ---
+ | - true
+ | ...
+
+test_run:switch('master')
+ | ---
+ | - true
+ | ...
+box.schema.user.grant('guest', 'replication')
+ | ---
+ | ...
+
+--
+-- Keep small number of snaps to force cleanup
+-- procedure be more intensive.
+box.cfg{checkpoint_count = 1}
+ | ---
+ | ...
+
+engine = test_run:get_cfg('engine')
+ | ---
+ | ...
+s = box.schema.space.create('test', {engine = engine})
+ | ---
+ | ...
+_ = s:create_index('pk')
+ | ---
+ | ...
+
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('create server replica with rpl_master=master,\
+              script="replication/gh-5806-slave.lua"')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server replica with wait=True, wait_load=True')
+ | ---
+ | - true
+ | ...
+
+test_run:switch('replica')
+ | ---
+ | - true
+ | ...
+box.cfg{checkpoint_count = 1}
+ | ---
+ | ...
+s = box.schema.space.create('testtemp', {temporary = true})
+ | ---
+ | ...
+_ = s:create_index('pk')
+ | ---
+ | ...
+for i=1,2 do func_xlog_snap(box.space.testtemp, {i}) end
+ | ---
+ | ...
+
+--
+-- Stop the replica node and generate
+-- first range of xlogs on the master.
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server replica')
+ | ---
+ | - true
+ | ...
+
+test_run:switch('master')
+ | ---
+ | - true
+ | ...
+for i=1,2 do func_xlog_snap(box.space.test, {i}) end
+ | ---
+ | ...
+
+--
+-- Restart the masted and generate the
+-- next range of xlogs.
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server master with wait_load=True')
+ | ---
+ | - true
+ | ...
+test_run:switch('master')
+ | ---
+ | - true
+ | ...
+for i=3,4 do func_xlog_snap(box.space.test, {i}) end
+ | ---
+ | ...
+
+--
+-- Restart master node and the replica then.
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server master with wait_load=True')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server replica with wait=False, wait_load=False')
+ | ---
+ | - true
+ | ...
+
+--
+-- Wait error to appear.
+while test_run:grep_log("master", "XlogGapError") == nil do fiber.sleep(0.01) end
+ | ---
+ | ...
+
+--
+-- Cleanup.
+test_run:cmd('stop server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server replica')
+ | ---
+ | - true
+ | ...
+test_run:cmd('delete server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('delete server replica')
+ | ---
+ | - true
+ | ...
+
+--
+-- Case 2.
+--
+-- Lets make sure we're not getting XlogGapError in
+-- case if wal_cleanup_delay is used.
+--
+
+test_run:cmd('create server master with script="replication/gh-5806-master.lua"')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server master with args="3600", wait=True, wait_load=True')
+ | ---
+ | - true
+ | ...
+
+test_run:switch('master')
+ | ---
+ | - true
+ | ...
+box.schema.user.grant('guest', 'replication')
+ | ---
+ | ...
+
+--
+-- Keep small number of snaps to force cleanup
+-- procedure be more intensive.
+box.cfg{checkpoint_count = 1}
+ | ---
+ | ...
+
+engine = test_run:get_cfg('engine')
+ | ---
+ | ...
+s = box.schema.space.create('test', {engine = engine})
+ | ---
+ | ...
+_ = s:create_index('pk')
+ | ---
+ | ...
+
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('create server replica with rpl_master=master,\
+              script="replication/gh-5806-slave.lua"')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server replica with wait=True, wait_load=True')
+ | ---
+ | - true
+ | ...
+
+test_run:switch('replica')
+ | ---
+ | - true
+ | ...
+box.cfg{checkpoint_count = 1}
+ | ---
+ | ...
+s = box.schema.space.create('testtemp', {temporary = true})
+ | ---
+ | ...
+_ = s:create_index('pk')
+ | ---
+ | ...
+for i=1,2 do func_xlog_snap(box.space.testtemp, {i}) end
+ | ---
+ | ...
+
+--
+-- Stop the replica node and generate
+-- first range of xlogs on the master.
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server replica')
+ | ---
+ | - true
+ | ...
+
+test_run:switch('master')
+ | ---
+ | - true
+ | ...
+for i=1,2 do func_xlog_snap(box.space.test, {i}) end
+ | ---
+ | ...
+
+--
+-- Restart the masted and generate the
+-- next range of xlogs.
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server master with args="3600", wait=True, wait_load=True')
+ | ---
+ | - true
+ | ...
+test_run:switch('master')
+ | ---
+ | - true
+ | ...
+for i=3,4 do func_xlog_snap(box.space.test, {i}) end
+ | ---
+ | ...
+
+--
+-- Restart master node and the replica then.
+test_run:switch('default')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server master with args="3600", wait=True, wait_load=True')
+ | ---
+ | - true
+ | ...
+test_run:cmd('start server replica with wait=True, wait_load=True')
+ | ---
+ | - true
+ | ...
+
+assert(test_run:grep_log("master", "XlogGapError") == nil)
+ | ---
+ | - true
+ | ...
+
+--
+-- Cleanup.
+test_run:cmd('stop server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('stop server replica')
+ | ---
+ | - true
+ | ...
+test_run:cmd('delete server master')
+ | ---
+ | - true
+ | ...
+test_run:cmd('delete server replica')
+ | ---
+ | - true
+ | ...
diff --git a/test/replication/gh-5806-xlog-cleanup.test.lua b/test/replication/gh-5806-xlog-cleanup.test.lua
new file mode 100644
index 000000000..6232e3964
--- /dev/null
+++ b/test/replication/gh-5806-xlog-cleanup.test.lua
@@ -0,0 +1,148 @@
+--
+-- gh-5806: defer xlog cleanup to keep xlogs until
+-- replicas present in "_cluster" are connected.
+-- Otherwise we are getting XlogGapError since
+-- master might go far forwad from replica and
+-- replica won't be able to connect without full
+-- rebootstrap.
+--
+
+fiber = require('fiber')
+test_run = require('test_run').new()
+engine = test_run:get_cfg('engine')
+
+--
+-- Case 1.
+--
+-- First lets make sure we're getting XlogGapError in
+-- case if wal_cleanup_delay is not used.
+--
+
+test_run:cmd('create server master with script="replication/gh-5806-master.lua"')
+test_run:cmd('start server master with wait=True, wait_load=True')
+
+test_run:switch('master')
+box.schema.user.grant('guest', 'replication')
+
+--
+-- Keep small number of snaps to force cleanup
+-- procedure be more intensive.
+box.cfg{checkpoint_count = 1}
+
+engine = test_run:get_cfg('engine')
+s = box.schema.space.create('test', {engine = engine})
+_ = s:create_index('pk')
+
+test_run:switch('default')
+test_run:cmd('create server replica with rpl_master=master,\
+              script="replication/gh-5806-slave.lua"')
+test_run:cmd('start server replica with wait=True, wait_load=True')
+
+test_run:switch('replica')
+box.cfg{checkpoint_count = 1}
+s = box.schema.space.create('testtemp', {temporary = true})
+_ = s:create_index('pk')
+for i=1,2 do func_xlog_snap(box.space.testtemp, {i}) end
+
+--
+-- Stop the replica node and generate
+-- first range of xlogs on the master.
+test_run:switch('default')
+test_run:cmd('stop server replica')
+
+test_run:switch('master')
+for i=1,2 do func_xlog_snap(box.space.test, {i}) end
+
+--
+-- Restart the masted and generate the
+-- next range of xlogs.
+test_run:switch('default')
+test_run:cmd('stop server master')
+test_run:cmd('start server master with wait_load=True')
+test_run:switch('master')
+for i=3,4 do func_xlog_snap(box.space.test, {i}) end
+
+--
+-- Restart master node and the replica then.
+test_run:switch('default')
+test_run:cmd('stop server master')
+test_run:cmd('start server master with wait_load=True')
+test_run:cmd('start server replica with wait=False, wait_load=False')
+
+--
+-- Wait error to appear.
+while test_run:grep_log("master", "XlogGapError") == nil do fiber.sleep(0.01) end
+
+--
+-- Cleanup.
+test_run:cmd('stop server master')
+test_run:cmd('stop server replica')
+test_run:cmd('delete server master')
+test_run:cmd('delete server replica')
+
+--
+-- Case 2.
+--
+-- Lets make sure we're not getting XlogGapError in
+-- case if wal_cleanup_delay is used.
+--
+
+test_run:cmd('create server master with script="replication/gh-5806-master.lua"')
+test_run:cmd('start server master with args="3600", wait=True, wait_load=True')
+
+test_run:switch('master')
+box.schema.user.grant('guest', 'replication')
+
+--
+-- Keep small number of snaps to force cleanup
+-- procedure be more intensive.
+box.cfg{checkpoint_count = 1}
+
+engine = test_run:get_cfg('engine')
+s = box.schema.space.create('test', {engine = engine})
+_ = s:create_index('pk')
+
+test_run:switch('default')
+test_run:cmd('create server replica with rpl_master=master,\
+              script="replication/gh-5806-slave.lua"')
+test_run:cmd('start server replica with wait=True, wait_load=True')
+
+test_run:switch('replica')
+box.cfg{checkpoint_count = 1}
+s = box.schema.space.create('testtemp', {temporary = true})
+_ = s:create_index('pk')
+for i=1,2 do func_xlog_snap(box.space.testtemp, {i}) end
+
+--
+-- Stop the replica node and generate
+-- first range of xlogs on the master.
+test_run:switch('default')
+test_run:cmd('stop server replica')
+
+test_run:switch('master')
+for i=1,2 do func_xlog_snap(box.space.test, {i}) end
+
+--
+-- Restart the masted and generate the
+-- next range of xlogs.
+test_run:switch('default')
+test_run:cmd('stop server master')
+test_run:cmd('start server master with args="3600", wait=True, wait_load=True')
+test_run:switch('master')
+for i=3,4 do func_xlog_snap(box.space.test, {i}) end
+
+--
+-- Restart master node and the replica then.
+test_run:switch('default')
+test_run:cmd('stop server master')
+test_run:cmd('start server master with args="3600", wait=True, wait_load=True')
+test_run:cmd('start server replica with wait=True, wait_load=True')
+
+assert(test_run:grep_log("master", "XlogGapError") == nil)
+
+--
+-- Cleanup.
+test_run:cmd('stop server master')
+test_run:cmd('stop server replica')
+test_run:cmd('delete server master')
+test_run:cmd('delete server replica')
-- 
2.30.2