[Tarantool-patches] [PATCH] replication: fill replicaset.applier.vclock after local recovery

[Vitaliia Ioffe]

Hi all, 
 
QA LGTM
 
 
--
Vitaliia Ioffe
 
  
>Понедельник, 9 августа 2021, 16:11 +03:00 от Serge Petrenko via Tarantool-patches <tarantool-patches at dev.tarantool.org>:
> 
>
>
>09.08.2021 13:09, Yan Shtunder пишет:
>> replicaset.applier.vclock is initialized in replication_init(),
>> which happens before local recovery. If some changes are come
>> frome some instance via applier that applier.vclock will equal 0.
>> This means that if some wild master send this node already applied
>> data, the node will apply the same data twice.
>>
>> Closes #6028
>> ---
>
>Hi! Thanks for the fixes!
>LGTM.
>
>> Issue:  https://github.com/tarantool/tarantool/issues/6028
>> Patch:  https://github.com/tarantool/tarantool/tree/yshtunder/gh-6028-applier-vclock
>>
>> src/box/applier.cc | 5 ++
>> src/box/box.cc | 7 +++
>> src/lib/core/errinj.h | 1 +
>> test/box/errinj.result | 1 +
>> test/replication/gh-6028-replica.lua | 13 ++++
>> .../gh-6028-vclock-is-empty.result | 60 +++++++++++++++++++
>> .../gh-6028-vclock-is-empty.test.lua | 24 ++++++++
>> 7 files changed, 111 insertions(+)
>> create mode 100644 test/replication/gh-6028-replica.lua
>> create mode 100644 test/replication/gh-6028-vclock-is-empty.result
>> create mode 100644 test/replication/gh-6028-vclock-is-empty.test.lua
>>
>> diff --git a/src/box/applier.cc b/src/box/applier.cc
>> index 07fe7f5c7..9855b8d37 100644
>> --- a/src/box/applier.cc
>> +++ b/src/box/applier.cc
>> @@ -1230,6 +1230,11 @@ applier_subscribe(struct applier *applier)
>> struct vclock vclock;
>> vclock_create(&vclock);
>> vclock_copy(&vclock, &replicaset.vclock);
>> +
>> + ERROR_INJECT(ERRINJ_REPLICASET_VCLOCK, {
>> + vclock_create(&vclock);
>> + });
>> +
>> /*
>> * Stop accepting local rows coming from a remote
>> * instance as soon as local WAL starts accepting writes.
>> diff --git a/src/box/box.cc b/src/box/box.cc
>> index ab7d983c9..f5cd63c9e 100644
>> --- a/src/box/box.cc
>> +++ b/src/box/box.cc
>> @@ -3451,6 +3451,13 @@ box_cfg_xc(void)
>> bootstrap(&instance_uuid, &replicaset_uuid,
>> &is_bootstrap_leader);
>> }
>> +
>> + /*
>> + * replicaset.applier.vclock is filled with real
>> + * value where local restore has already completed
>> + */
>> + vclock_copy(&replicaset.applier.vclock, &replicaset.vclock);
>> +
>> fiber_gc();
>>
>> /*
>> diff --git a/src/lib/core/errinj.h b/src/lib/core/errinj.h
>> index 359174b16..fcd856fbb 100644
>> --- a/src/lib/core/errinj.h
>> +++ b/src/lib/core/errinj.h
>> @@ -152,6 +152,7 @@ struct errinj {
>> _(ERRINJ_STDIN_ISATTY, ERRINJ_INT, {.iparam = -1}) \
>> _(ERRINJ_SNAP_COMMIT_FAIL, ERRINJ_BOOL, {.bparam = false}) \
>> _(ERRINJ_IPROTO_SINGLE_THREAD_STAT, ERRINJ_INT, {.iparam = -1}) \
>> + _(ERRINJ_REPLICASET_VCLOCK, ERRINJ_BOOL, {.bparam = false}) \
>>
>> ENUM0(errinj_id, ERRINJ_LIST);
>> extern struct errinj errinjs[];
>> diff --git a/test/box/errinj.result b/test/box/errinj.result
>> index 43daf5f0f..62e37bbdd 100644
>> --- a/test/box/errinj.result
>> +++ b/test/box/errinj.result
>> @@ -70,6 +70,7 @@ evals
>> - ERRINJ_RELAY_REPORT_INTERVAL: 0
>> - ERRINJ_RELAY_SEND_DELAY: false
>> - ERRINJ_RELAY_TIMEOUT: 0
>> + - ERRINJ_REPLICASET_VCLOCK: false
>> - ERRINJ_REPLICA_JOIN_DELAY: false
>> - ERRINJ_SIO_READ_MAX: -1
>> - ERRINJ_SNAP_COMMIT_DELAY: false
>> diff --git a/test/replication/gh-6028-replica.lua b/test/replication/gh-6028-replica.lua
>> new file mode 100644
>> index 000000000..5669cc4e9
>> --- /dev/null
>> +++ b/test/replication/gh-6028-replica.lua
>> @@ -0,0 +1,13 @@
>> +#!/usr/bin/env tarantool
>> +
>> +require('console').listen(os.getenv('ADMIN'))
>> +
>> +box.error.injection.set("ERRINJ_REPLICASET_VCLOCK", true)
>> +
>> +box.cfg({
>> + listen = os.getenv("LISTEN"),
>> + replication = {os.getenv("MASTER"), os.getenv("LISTEN")},
>> + memtx_memory = 107374182,
>> +})
>> +
>> +box.error.injection.set("ERRINJ_REPLICASET_VCLOCK", false)
>> diff --git a/test/replication/gh-6028-vclock-is-empty.result b/test/replication/gh-6028-vclock-is-empty.result
>> new file mode 100644
>> index 000000000..0b103bb6e
>> --- /dev/null
>> +++ b/test/replication/gh-6028-vclock-is-empty.result
>> @@ -0,0 +1,60 @@
>> +-- test-run result file version 2
>> +test_run = require('test_run').new()
>> + | ---
>> + | ...
>> +
>> +box.schema.user.grant('guest', 'replication')
>> + | ---
>> + | ...
>> +s = box.schema.create_space('test')
>> + | ---
>> + | ...
>> +_ = s:create_index('pk')
>> + | ---
>> + | ...
>> +
>> +
>> +-- Case 1
>> +test_run:cmd('create server replica with rpl_master=default,\
>> + script="replication/gh-6028-replica.lua"')
>> + | ---
>> + | - true
>> + | ...
>> +test_run:cmd('start server replica')
>> + | ---
>> + | - true
>> + | ...
>> +
>> +test_run:cmd('stop server replica')
>> + | ---
>> + | - true
>> + | ...
>> +s:insert{1}
>> + | ---
>> + | - [1]
>> + | ...
>> +
>> +
>> +-- Case 2
>> +test_run:cmd('start server replica')
>> + | ---
>> + | - true
>> + | ...
>> +s:insert{2}
>> + | ---
>> + | - [2]
>> + | ...
>> +
>> +
>> +test_run:cmd('stop server replica')
>> + | ---
>> + | - true
>> + | ...
>> +test_run:cmd('cleanup server replica')
>> + | ---
>> + | - true
>> + | ...
>> +test_run:cmd('delete server replica')
>> + | ---
>> + | - true
>> + | ...
>> diff --git a/test/replication/gh-6028-vclock-is-empty.test.lua b/test/replication/gh-6028-vclock-is-empty.test.lua
>> new file mode 100644
>> index 000000000..ba14eca55
>> --- /dev/null
>> +++ b/test/replication/gh-6028-vclock-is-empty.test.lua
>> @@ -0,0 +1,24 @@
>> +test_run = require('test_run').new()
>> +
>> +box.schema.user.grant('guest', 'replication')
>> +s = box.schema.create_space('test')
>> +_ = s:create_index('pk')
>> +
>> +
>> +-- Case 1
>> +test_run:cmd('create server replica with rpl_master=default,\
>> + script="replication/gh-6028-replica.lua"')
>> +test_run:cmd('start server replica')
>> +
>> +test_run:cmd('stop server replica')
>> +s:insert{1}
>> +
>> +
>> +-- Case 2
>> +test_run:cmd('start server replica')
>> +s:insert{2}
>> +
>> +
>> +test_run:cmd('stop server replica')
>> +test_run:cmd('cleanup server replica')
>> +test_run:cmd('delete server replica')
>> --
>> 2.25.1
>>
>
>--
>Serge Petrenko
 
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