NO_DOC=internal
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The bug was discovered during the development of the quorum promote feature
-- basically, it causes qpromote_several_outstanding_promotes_test.lua
to fail spontaneously. Furthermore, we suspect that this is the underlying
cause of lost heartbeats and subsequent severe replication lags.

Long story short, whenever we want to send a message from the TX thread
back to a relay thread, we should first check if they are still
connected. Otherwise, we'll see
  * An assertion failure in debug, or
  * (Presumably) a relay hangup in release due to
    `if (status_msg->msg.route != NULL) return;`
    in relay_status_update() -> relay_check_status_needs_update().

The upstream is aware of this issue:
https://github.com/tarantool/tarantool/issues/9920

Backtrace:

```
__pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
0x00007f891f6a5463 in __pthread_kill_internal (threadid=<optimized out>, signo=6) at pthread_kill.c:78
0x00007f891f64c120 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
0x00007f891f6334c3 in __GI_abort () at abort.c:79
0x00007f891f6333df in __assert_fail_base (fmt=0x7f891f7c3c20 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
    assertion=assertion@entry=0x58560077b94b "loop() == pipe->producer", file=file@entry=0x58560077b935 "./src/lib/core/cbus.h", line=line@entry=224,
    function=function@entry=0x58560077b910 "void cpipe_push_input(cpipe*, cmsg*)") at assert.c:94
0x00007f891f644177 in __assert_fail (assertion=0x58560077b94b "loop() == pipe->producer", file=0x58560077b935 "./src/lib/core/cbus.h", line=224,
    function=0x58560077b910 "void cpipe_push_input(cpipe*, cmsg*)") at assert.c:103
0x0000585600328782 in cpipe_push_input (pipe=0x58563115dfc8, msg=0x58563115e028) at tarantool/src/lib/core/cbus.h:224
0x0000585600328802 in cpipe_push (pipe=0x58563115dfc8, msg=0x58563115e028) at tarantool/src/lib/core/cbus.h:241
0x000058560032a157 in tx_status_update (msg=0x58563115e028) at tarantool/src/box/relay.cc:629
0x0000585600468d4b in cmsg_deliver (msg=0x58563115e028) at tarantool/src/lib/core/cbus.c:553
0x0000585600469e50 in fiber_pool_f (ap=0x7f891e8129a8) at tarantool/src/lib/core/fiber_pool.c:64
0x00005856001be16a in fiber_cxx_invoke(fiber_func, typedef __va_list_tag __va_list_tag *) (f=0x585600469b82 <fiber_pool_f>, ap=0x7f891e8129a8)
    at tarantool/src/lib/core/fiber.h:1283
0x000058560045f495 in fiber_loop (data=0x0) at tarantool/src/lib/core/fiber.c:1085
0x0000585600745b8f in coro_init () at tarantool/third_party/coro/coro.c:108
```

Relevant frames:

```
0x0000585600328782 in cpipe_push_input (pipe=0x58563115dfc8, msg=0x58563115e028) at tarantool/src/lib/core/cbus.h:224
224             assert(loop() == pipe->producer);
(gdb)
0x0000585600328802 in cpipe_push (pipe=0x58563115dfc8, msg=0x58563115e028) at tarantool/src/lib/core/cbus.h:241
241             cpipe_push_input(pipe, msg);
(gdb)
0x000058560032a157 in tx_status_update (msg=0x58563115e028) at tarantool/src/box/relay.cc:629
629             cpipe_push(&status->relay->relay_pipe, msg);
(gdb)
0x0000585600468d4b in cmsg_deliver (msg=0x58563115e028) at tarantool/src/lib/core/cbus.c:553
553             msg->hop->f(msg);
(gdb)
0x0000585600469e50 in fiber_pool_f (ap=0x7f891e8129a8) at tarantool/src/lib/core/fiber_pool.c:64
64              cmsg_deliver(msg);
(gdb)
```

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Previously, log_destroy would close log->fd even if it's one of the
standard streams. This behavior almost never makes sense, unless
one's trying to write a unix daemon which is obviously not the case.

Closing stderr has the following side effects:
- it breaks a reinit of the default logger;
- it inhibits ASan's final leak report;
- it causes a EPOLLHUP during a restart via `--entrypoint-fd` (Picodata).

NO_DOC=internal
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This stores all of the include directories of box into a file
called box-include-args. We use this to generate certain FFI
bindings using rust-bindgen.

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Apparently, clang 18 is not particularly happy about luajit's static
assert implementation:

```
In file included from tarantool/src/box/box.cc:38:
In file included from tarantool/src/lua/utils.h:47:
In file included from tarantool/third_party/luajit/src/lj_state.h:9:
tarantool/third_party/luajit/src/lj_obj.h:488:1: error: variable length arrays in C++ are a Clang extension; did you mean to use 'static_assert'? [-Werror,-Wvla-extension-static-assert]
  488 | LJ_STATIC_ASSERT(offsetof(Node, val) == 0);
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tarantool/third_party/luajit/src/lj_def.h:370:71: note: expanded from macro 'LJ_STATIC_ASSERT'
  370 |   extern void LJ_ASSERT_NAME(__COUNTER__)(int STATIC_ASSERTION_FAILED[(cond)?1:-1])
      |                                                                       ^~~~~~~~~~~
tarantool/third_party/luajit/src/lj_obj.h:488:18: note: cast that performs the conversions of a reinterpret_cast is not allowed in a constant expression
  488 | LJ_STATIC_ASSERT(offsetof(Node, val) == 0);
      | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
tarantool/src/trivia/util.h:273:33: note: expanded from macro 'offsetof'
  273 | #define offsetof(type, member) ((size_t) &((type *)0)->member)
      |                                 ^
tarantool/third_party/luajit/src/lj_def.h:370:72: note: expanded from macro 'LJ_STATIC_ASSERT'
  370 |   extern void LJ_ASSERT_NAME(__COUNTER__)(int STATIC_ASSERTION_FAILED[(cond)?1:-1])
      |
```

Luckily, we can just mute this.

NO_DOC=<nothing interesting here>
NO_TEST=<tested during build time>
NO_CHANGELOG=<nothing interesting here>

Denis Smirnov authored 6 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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NO_CHANGELOG=internal

Denis Smirnov authored 6 months ago and Dmitry Ivanov committed 3 months ago

Picodata SQL now manages the Tarantool statement cache using a
dedicated SQL fiber that handles preparation and unpreparation of
statements based on an LRU eviction policy. Prepared statements
can be executed across different sessions by SQL clients.

Previously, when a client executed a prepared statement, it
increased the reference count in the statement cache and linked
the statement to the client's session. While this approach seemed
fine, it caused issues during eviction, as references to these
statements remained in client sessions, preventing proper eviction.

This commit addresses the issue by ensuring that if a statement is
added to the current session during execution, it is removed and
the session state is restored once execution is complete.

NO_DOC=internal
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Denis Smirnov authored 7 months ago and Dmitry Ivanov committed 3 months ago

Temporary spaces, used for cluster-wide SQL data materialization,
were causing unnecessary netbox schema version bumps, leading to
schema downloading via netbox, excessive Lua garbage and GC blocks.
Since these tables are for internal SQL use, we don't need to inform
netbox clients about schema changes. We now maintain separate schema
versions: one for netbox clients and one for the internal prepared
statement cache.

NO_DOC=picodata internal patch
NO_CHANGELOG=picodata internal patch

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Dmitry Rodionov authored 1 year ago and Dmitry Ivanov committed 3 months ago

* smoke test that verifies that cluster can be successfully bootstrapped
* test diverging limbo owner (litmus test)
  - doesn't work on fork master, works with promote chains
* test aba leader
  - two cases where elected leader fails to deliver promote to others
* attempt to model 2+2 quorum lowering case
* two cases with two outstanding promotes
* use new injections for particular xrow types

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Co-authored-by: Dmitry Ivanov <ivadmi5@gmail.com>

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Further reading:
* https://git.picodata.io/picodata/tarantool/-/merge_requests/175
* https://github.com/tarantool/tarantool/pull/10334

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Dmitry Rodionov authored 1 year ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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Co-authored-by: Dmitry Ivanov <ivadmi5@gmail.com>

Arseniy Volynets authored 7 months ago and Dmitry Ivanov committed 3 months ago

- If you prepare and execute statement with params
in the projection and then unprepare the
statement, byte counter may show the wrong value
or even overflow.
- The problem is that when we compile sql
statement, we set parameter type to 'any'.
But when we execute the statement we set parameter
type to actual type. Then we use this type in
calculation of estimated of sql cache entry size.
This leads to different estimated sizes of cache
entry during prepare and during unprepare after
statement was executed
- Fix this by resetting type to 'any' after
executing the statement

NO_DOC=picodata internal patch
NO_CHANGELOG=picodata internal patch

Arseniy Volynets authored 7 months ago and Dmitry Ivanov committed 3 months ago

BREAKING CHANGE!:
1. add session id argument to sql_prepare_ext
2. introduce sql_unprepare_ext function.
This function removes prepared stmt using
given session id.

In picodata SQL, we may prepare stmt in one
session and unprepare it in some
other session, which does not know in
what session the statement was prepared. Now
sql_prepare_ext returns not only statement id,
but also a session id. This way statement can
be unprepared from other session using
sql_unprepare_ext.

NO_DOC=picodata internal patch
NO_CHANGELOG=picodata internal patch

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Дмитрий Кольцов authored 7 months ago and Dmitry Ivanov committed 3 months ago

Replace fiber.sleep with luatest.helpers.retrying
to make tests less flaky

NO_DOC=internal
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godzie44 authored 1 year ago and Dmitry Ivanov committed 3 months ago

WAL extensions allows to add auxiliary information to each
write-ahead log record. WAL extensions configured by
`box.cfg.wal_ext` option. Currently, there is only one builtin
extension: `new_old`. `new_old` extension add information about
new and old tuples for ddl operations.

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Denis Smirnov authored 8 months ago and Dmitry Ivanov committed 3 months ago

BREAKING CHANGE!:
1. remove sql_prepare from the export list;
2. introduce sql_prepare_ext.

The sql_prepare symbol previously included the tarantool port as
an output parameter. However, this structure was inconvenient for
libraries using the C API, as they primarily required just the
statement ID. To address this issue, the sql_prepare symbol was
replaced with the sql_prepare_ext symbol.

NO_DOC=picodata internal patch
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Denis Smirnov authored 8 months ago and Dmitry Ivanov committed 3 months ago

Previously, users with multiple connections to tarantool instance
couldn't share prepared statements across sessions. They had to
manually call prepare in each session before execution.

This commit automates this process for the exported version of
SQL prepared statement execution (sql_execute_prepared_ext symbol).
Original Lua execution keeps the old behavior for backward
compatibility.

NO_DOC=picodata internal patch
NO_CHANGELOG=picodata internal patch
NO_TEST=picodata internal patch

Denis Smirnov authored 8 months ago and Dmitry Ivanov committed 3 months ago

Previously, sql_prepare_and_execute and sql_execute_prepared
functions didn't follow a convention to keep output parameters
(the port to be exact) at the end of the argument list.

NO_DOC=picodata internal patch
NO_CHANGELOG=picodata internal patch
NO_TEST=picodata internal patch

Denis Smirnov authored 8 months ago and Dmitry Ivanov committed 3 months ago

BREAKING CHANGE!:
1. sql_bind_list_decode - removed
2. sql_execute_prepared_ext - new arguments
3. sql_prepare_and_execute_ext - exported

There were several reasons to refactor the API.
1. sql_bind_list_decode (decodes message pack parameters into
   internal C bind structure) is very difficult to use without
   memory leaks (as it allocates results on fiber()->gc).
2. sql_execute_prepared_ext missed vdbe step limit in parameters
   and used the default value.
3. Sometimes SQL queries don't fit into prepared statement cache
   and the user still wants to execute them via a slow pass with
   full compilations from the query text. That was the reason to
   export sql_prepare_and_execute_ext symbol.

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The following commit introduced a tautological if expression:

```gitcommit
sql: introduce structs assembling DDL arguments during parsing (ba56b145fafaa3)
```

Due to the changes in commit

```gitcommit
sql: refactor memory allocation system (cb777136dd7a0c)
```

the allocations in sql expressions became infallible, which means
that we may safely fix static analysis warnings by dropping the
tautological comparison altogether.

Original patch by Feodor Alexandrov.

Егор Ивков authored 10 months ago and Dmitry Ivanov committed 3 months ago

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Egor Ivkov authored 11 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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Egor Ivkov authored 11 months ago and Dmitry Ivanov committed 3 months ago

Also remove CI pipeline for fuzz_until, as running it in CI is not planned

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Egor Ivkov authored 11 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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Egor Ivkov authored 11 months ago and Dmitry Ivanov committed 3 months ago

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Egor Ivkov authored 11 months ago and Dmitry Ivanov committed 3 months ago

- add cli flag whether to wait for 2x coverage
- add timestamps to log lines
- remove dictionary passing as it is not needed when
  corpus already exist

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Виталий Шунков authored 3 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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Виталий Шунков authored 5 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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Виталий Шунков authored 5 months ago and Dmitry Ivanov committed 3 months ago

This image is suitable for release, debug and debug-asan builds.
The image is somewhat heavy (1.08 GiB) due to llvm-18, but don't run
tarantool's CI that often.

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Co-authored-by: Dmitry Ivanov <d.ivanov@picodata.io>
Co-authored-by: Vitaly Shunkov <v.shunkov@picodata.io>

Дмитрий Кибирев authored 7 months ago and Dmitry Ivanov committed 3 months ago

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Dmitry Rodionov authored 7 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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NO_TEST=internal

Dmitry Rodionov authored 7 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
NO_CHANGELOG=internal
NO_TEST=internal

Виталий Шунков authored 7 months ago and Dmitry Ivanov committed 3 months ago

NO_DOC=internal
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