Commit Graph

230 Commits

Author SHA1 Message Date
Kefu Chai
24d14b601b treewide: s/boost::adaptors::map_values/std::views::values/
now that we are allowed to use C++23. we now have the luxury of using
`std::views::values`.

in this change, we:

- replace `boost::adaptors::map_values` with `std::views::values`
- update affected code to work with `std::views::values`
- the places where we use `boost::join()` are not changed, because
  we cannot use `std::views::concat` yet. this helper is only
  available in C++26.

to reduce the dependency to boost for better maintainability, and
leverage standard library features for better long-term support.

this change is part of our ongoing effort to modernize our codebase
and reduce external dependencies where possible.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes scylladb/scylladb#21265
2024-10-27 21:32:45 +02:00
Łukasz Paszkowski
84912c3155 reader_selector: Extend with maximum reader count
The maximum reader count allows to predict the number of readers
that can be created with create_new_readers(). This helps to
correctly allocate a vector size in the rows_merged statistics
when a combiner reader is created via make_combined_reader.
2024-10-22 08:15:02 +02:00
Kefu Chai
85518463a9 test/boost: stop using ranges::to()
now that we are able to use ranges library provided by the C++
standard library. there is no need to use the homebrew `ranges::to()`.

in this change, we switch to `std::ranges::to()` in favor of
`ranges::to()`.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
2024-10-19 13:21:20 +08:00
Botond Dénes
e1d8cddd09 test/boost/mutation_test: add test for multishard permit safety
Add a test checking that the multishard reader will not deadlock, when
created with an admitted permit, on a semaphore with a single count
resource.
2024-10-17 08:47:50 -04:00
Kefu Chai
f9091066b7 treewide: replace boost::irange with std::views::iota where possible
when building scylla with the standard library from GCC-14.2, shipped by
fedora 41, we have following build failure:

```
/home/kefu/.local/bin/clang++ -DDEBUG -DDEBUG_LSA_SANITIZER -DFMT_SHARED -DSANITIZE -DSCYLLA_BUILD_MODE=debug -DSCYLLA_ENABLE_ERROR_INJECTION -DSEASTAR_API_LEVEL=7 -DSEASTAR_DEBUG -DSEASTAR_DEBUG_PROMISE -DSEASTAR_DEBUG_SHARED_PTR -DSEASTAR_DEFAULT_ALLOCATOR -DSEASTAR_LOGGER_COMPILE_TIME_FMT -DSEASTAR_LOGGER_TYPE_STDOUT -DSEASTAR_SCHEDULING_GROUPS_COUNT=16 -DSEASTAR_SHUFFLE_TASK_QUEUE -DSEASTAR_SSTRING -DSEASTAR_TYPE_ERASE_MORE -DXXH_PRIVATE_API -DCMAKE_INTDIR=\"Debug\" -I/home/kefu/dev/scylladb -I/home/kefu/dev/scylladb/build/gen -I/home/kefu/dev/scylladb/seastar/include -I/home/kefu/dev/scylladb/build/seastar/gen/include -I/home/kefu/dev/scylladb/build/seastar/gen/src -isystem /home/kefu/dev/scylladb/abseil -g -Og -g -gz -std=gnu++23 -fvisibility=hidden -Wall -Werror -Wextra -Wno-error=deprecated-declarations -Wimplicit-fallthrough -Wno-c++11-narrowing -Wno-deprecated-copy -Wno-mismatched-tags -Wno-missing-field-initializers -Wno-overloaded-virtual -Wno-unsupported-friend -Wno-unused-parameter -ffile-prefix-map=/home/kefu/dev/scylladb/build=. -march=x86-64-v3 -mpclmul -Xclang -fexperimental-assignment-tracking=disabled -Werror=unused-result -fstack-clash-protection -fsanitize=address -fsanitize=undefined -MD -MT CMakeFiles/scylla-main.dir/Debug/init.cc.o -MF CMakeFiles/scylla-main.dir/Debug/init.cc.o.d -o CMakeFiles/scylla-main.dir/Debug/init.cc.o -c /home/kefu/dev/scylladb/init.cc
In file included from /home/kefu/dev/scylladb/init.cc:12:
In file included from /home/kefu/dev/scylladb/db/config.hh:20:
In file included from /home/kefu/dev/scylladb/locator/abstract_replication_strategy.hh:26:
/home/kefu/dev/scylladb/locator/tablets.hh:410:30: error: unexpected type name 'size_t': expected expression
  410 |         return boost::irange<size_t>(0, tablet_count()) | boost::adaptors::transformed([] (size_t i) {
      |                              ^
/home/kefu/dev/scylladb/locator/tablets.hh:410:23: error: no member named 'irange' in namespace 'boost'
  410 |         return boost::irange<size_t>(0, tablet_count()) | boost::adaptors::transformed([] (size_t i) {
      |                ~~~~~~~^
/home/kefu/dev/scylladb/locator/tablets.hh:410:38: error: left operand of comma operator has no effect [-Werror,-Wunused-value]
  410 |         return boost::irange<size_t>(0, tablet_count()) | boost::adaptors::transformed([] (size_t i) {
      |                                      ^
3 errors generated.
[16/782] Building CXX object CMakeFiles/scylla-main.dir/Debug/keys.cc.o
[17/782] Building CXX object CMakeFiles/scylla-main.dir/Debug/counters.cc.o
[18/782] Building CXX object CMakeFiles/scylla-main.dir/Debug/partition_slice_builder.cc.o
[19/782] Building CXX object CMakeFiles/scylla-main.dir/Debug/mutation_query.cc.o
FAILED: CMakeFiles/scylla-main.dir/Debug/mutation_query.cc.o
/home/kefu/.local/bin/clang++ -DDEBUG -DDEBUG_LSA_SANITIZER -DFMT_SHARED -DSANITIZE -DSCYLLA_BUILD_MODE=debug -DSCYLLA_ENABLE_ERROR_INJECTION -DSEASTAR_API_LEVEL=7 -DSEASTAR_DEBUG -DSEASTAR_DEBUG_PROMISE -DSEASTAR_DEBUG_SHARED_PTR -DSEASTAR_DEFAULT_ALLOCATOR -DSEASTAR_LOGGER_COMPILE_TIME_FMT -DSEASTAR_LOGGER_TYPE_STDOUT -DSEASTAR_SCHEDULING_GROUPS_COUNT=16 -DSEASTAR_SHUFFLE_TASK_QUEUE -DSEASTAR_SSTRING -DSEASTAR_TYPE_ERASE_MORE -DXXH_PRIVATE_API -DCMAKE_INTDIR=\"Debug\" -I/home/kefu/dev/scylladb -I/home/kefu/dev/scylladb/build/gen -I/home/kefu/dev/scylladb/seastar/include -I/home/kefu/dev/scylladb/build/seastar/gen/include -I/home/kefu/dev/scylladb/build/seastar/gen/src -isystem /home/kefu/dev/scylladb/abseil -g -Og -g -gz -std=gnu++23 -fvisibility=hidden -Wall -Werror -Wextra -Wno-error=deprecated-declarations -Wimplicit-fallthrough -Wno-c++11-narrowing -Wno-deprecated-copy -Wno-mismatched-tags -Wno-missing-field-initializers -Wno-overloaded-virtual -Wno-unsupported-friend -Wno-unused-parameter -ffile-prefix-map=/home/kefu/dev/scylladb/build=. -march=x86-64-v3 -mpclmul -Xclang -fexperimental-assignment-tracking=disabled -Werror=unused-result -fstack-clash-protection -fsanitize=address -fsanitize=undefined -MD -MT CMakeFiles/scylla-main.dir/Debug/mutation_query.cc.o -MF CMakeFiles/scylla-main.dir/Debug/mutation_query.cc.o.d -o CMakeFiles/scylla-main.dir/Debug/mutation_query.cc.o -c /home/kefu/dev/scylladb/mutation_query.cc
In file included from /home/kefu/dev/scylladb/mutation_query.cc:12:
In file included from /home/kefu/dev/scylladb/schema/schema_registry.hh:17:
In file included from /home/kefu/dev/scylladb/replica/database.hh:11:
In file included from /home/kefu/dev/scylladb/locator/abstract_replication_strategy.hh:26:
/home/kefu/dev/scylladb/locator/tablets.hh:410:30: error: unexpected type name 'size_t': expected expression
  410 |         return boost::irange<size_t>(0, tablet_count()) | boost::adaptors::transformed([] (size_t i) {
      |                              ^
/home/kefu/dev/scylladb/locator/tablets.hh:410:23: error: no member named 'irange' in namespace 'boost'
  410 |         return boost::irange<size_t>(0, tablet_count()) | boost::adaptors::transformed([] (size_t i) {
      |                ~~~~~~~^
/home/kefu/dev/scylladb/locator/tablets.hh:410:38: error: left operand of comma operator has no effect [-Werror,-Wunused-value]
  410 |         return boost::irange<size_t>(0, tablet_count()) | boost::adaptors::transformed([] (size_t i) {
      |                                      ^
In file included from /home/kefu/dev/scylladb/mutation_query.cc:12:
In file included from /home/kefu/dev/scylladb/schema/schema_registry.hh:17:
In file included from /home/kefu/dev/scylladb/replica/database.hh:37:
In file included from /home/kefu/dev/scylladb/db/snapshot-ctl.hh:20:
/home/kefu/dev/scylladb/tasks/task_manager.hh:403:54: error: no member named 'irange' in namespace 'boost'
  403 |         co_await coroutine::parallel_for_each(boost::irange(0u, smp::count), [&tm, id, &res, &func] (unsigned shard) -> future<> {
      |                                               ~~~~~~~^
4 errors generated.
```

so let's take the opportunity to switch from `boost::irange` to
`std::views::iota`.

in this change, we:

- switch from boost::irange to std::views::iota for better standard library compatibility
- retain boost::irange where step parameter is used, as std::views::iota doesn't support it
- this change partially modernizes our range usage while maintaining
- existing functionality

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes scylladb/scylladb#20924
2024-10-03 10:33:33 +03:00
Benny Halevy
5a0f3889e0 treewide: use std::ranges sort functions rather than boost
Using the standard library is preffered over boost.

In cql3/expr/expression.cc to_sorted_vector got more of a
face-list and was modernized to use also std::unique
and while at it, to move its input range in the uniquely sorted
result vector.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2024-10-01 14:19:05 +03:00
Benny Halevy
57e9e9c369 compaction: define max_purgeable_fn
Before we add a new, is_shadowable, parameter to it.

And define global `can_always_purge` and `can_never_purge`
functions, a-la `always_gc` and `never_gc`.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2024-09-10 19:05:57 +03:00
Łukasz Paszkowski
158b994676 query::trim_clustering_row_ranges_to: require reversed schema for native reversed ranges
Simplify implementation and for clustering key ranges in native
reversed format, require a reversed table schema.

Trimming native reversed clustering key ranges requires a reversed
schema to be passed in. Thus, the reverse flag is no longer required
as it would always be set to false.
2024-08-13 10:07:10 +02:00
Avi Kivity
aa1270a00c treewide: change assert() to SCYLLA_ASSERT()
assert() is traditionally disabled in release builds, but not in
scylladb. This hasn't caused problems so far, but the latest abseil
release includes a commit [1] that causes a 1000 insn/op regression when
NDEBUG is not defined.

Clearly, we must move towards a build system where NDEBUG is defined in
release builds. But we can't just define it blindly without vetting
all the assert() calls, as some were written with the expectation that
they are enabled in release mode.

To solve the conundrum, change all assert() calls to a new SCYLLA_ASSERT()
macro in utils/assert.hh. This macro is always defined and is not conditional
on NDEBUG, so we can later (after vetting Seastar) enable NDEBUG in release
mode.

[1] 66ef711d68

Closes scylladb/scylladb#20006
2024-08-05 08:23:35 +03:00
Benny Halevy
9f05072527 token: make kind-based ctor private
Users outside of the token module don't
need to mess with the token::kind.
They can only create key tokens.
Never, minimum or maximum tokens, with a particular
datya value.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2024-07-20 21:21:42 +03:00
Avi Kivity
fdc1449392 treewide: rename flat_mutation_reader_v2 to mutation_reader
flat_mutation_reader_v2 was introduced in a pair of commits in 2021:

  e3309322c3 "Clone flat_mutation_reader related classes into v2 variants"
  08b5773c12 "Adapt flat_mutation_reader_v2 to the new version of the API"

as a replacement for flat_mutation_reader, using range_tombstone_change
instead of range_tombstone to represent represent range tombstones. See
those commits for more information.

The transition was incremental; the last use of the original
flat_mutation_reader was removed in 2022 in commit

  026f8cc1e7 "db: Use mutation_partition_v2 in mvcc"

In turn, flat_mutation_reader was introduced in 2017 in commit

  748205ca75 "Introduce flat_mutation_reader"

To transition from a mutation_reader that nested rows within
a partition in a separate stream, to a flat reader that streamed
partitions and rows in the same stream.

Here, we reclaim the original name and rename the awkward
flat_mutation_reader_v2 to mutation_reader.

Note that mutation_fragment_v2 remains since we still use the original
for compatibilty, sometimes.

Some notes about the transition:

 - files were also renamed. In one case (flat_mutation_reader_test.cc), the
   rename target already existed, so we rename to
    mutation_reader_another_test.cc.

 - a namespace 'mutation_reader' with two definitions existed (in
   mutation_reader_fwd.hh). Its contents was folded into the mutation_reader
   class. As a result, a few #includes had to be adjusted.

Closes scylladb/scylladb#19356
2024-06-21 07:12:06 +03:00
Botond Dénes
d37eca0593 test/boost/mutation_reader_test: compacting_reader_next_partition: fix partition order
The test creates two partitions and passes them through the reader, but
the partitions are out-of-order. This is benign but best to fix it
anyway.
Found after bumping validation level inside the compactor.

Closes scylladb/scylladb#18848
2024-05-28 20:41:54 +03:00
Kefu Chai
222dbf2ce4 test/boost: include test/lib/test_utils.hh
this change was created in the same spirit of 505900f18f. because
we are deprecating the operator<< for vector and unorderd_map in
Seastar, some tests do not compile anymore if we disable these
operators. so to be prepared for the change disabling them, let's
include test/lib/test_utils.hh for accessing the printer dedicated
for Boost.test. and also '#include <fmt/ranges.h>' when necessary,
because, in order to format the ranges using {fmt}, we need to
use fmt/ranges.h.

Refs #13245

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
2024-05-26 12:32:43 +08:00
Tomasz Grabiec
32a191384a test: Avoid using deprecated sharded API
There is not tablet migration in unit tests, so shard_of() can be
safely replaced with shard_for_reads(). Even if it's used for writes.
2024-05-16 00:28:47 +02:00
Tomasz Grabiec
9da3bd84c7 dht: Extract dht::static_sharder
Before the patch, dht::sharder could be instantiated and it would
behave like a static sharder. This is not safe with regards to
extensions of the API because if a derived implementation forgets to
override some method, it would incorrectly default to the
implementation from static sharder. Better to fail the compilation in
this case, so extract static sharder logic to dht::static_sharder
class and make all methods in dht::sharder pure virtual.

This also allows us to have algorithms indicate that they only work
with static sharder by accepting the type, and have compile-time
safety for this requirement.

schema::get_sharder() is changed to return the static_sharder&.
2024-05-16 00:28:47 +02:00
Kefu Chai
5ca9a46a91 test/lib: do not include unused headers
these unused includes were identified by clangd. see
https://clangd.llvm.org/guides/include-cleaner#unused-include-warning
for more details on the "Unused include" warning.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes scylladb/scylladb#18515
2024-05-05 23:31:48 +03:00
Kefu Chai
a439ebcfce treewide: include fmt/ranges.h and/or fmt/std.h
before this change, we rely on the default-generated fmt::formatter
created from operator<<, but fmt v10 dropped the default-generated
formatter.

in this change, we include `fmt/ranges.h` and/or `fmt/std.h`
for formatting the container types, like vector, map
optional and variant using {fmt} instead of the homebrew
formatter based on operator<<.
with this change, the changes adding fmt::formatter and
the changes using ostream formatter explicitly, we are
allowed to drop `FMT_DEPRECATED_OSTREAM` macro.

Refs scylladb#13245

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
2024-04-19 22:56:16 +08:00
Pavel Emelyanov
d90db016bf treewide: Use partition_slice::is_reversed()
Continuation of cc56a971e8, more noisy places detected

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

Closes scylladb/scylladb#17763
2024-03-13 08:52:46 +02:00
Avi Kivity
605bf6e221 range.hh: retire
range.hh was deprecated in bd794629f9 (2020) since its names
conflict with the C++ library concept of an iterator range. The name
::range also mapped to the dangerous wrapping_interval rather than
nonwrapping_interval.

Complete the deprecation by removing range.hh and replacing all the
aliases by the names they point to from the interval library. Note
this now exposes uses of wrapping intervals as they are now explicit.

The unit tests are renamed and range.hh is deleted.

Closes scylladb/scylladb#17428
2024-02-21 00:24:25 +02:00
Avi Kivity
7cb1c10fed treewide: replace seastar::future::get0() with seastar::future::get()
get0() dates back from the days where Seastar futures carried tuples, and
get0() was a way to get the first (and usually only) element. Now
it's a distraction, and Seastar is likely to deprecate and remove it.

Replace with seastar::future::get(), which does the same thing.
2024-02-02 22:12:57 +08:00
Lakshmi Narayanan Sreethar
76f0d5e35b reader_permit: store schema_ptr instead of raw schema pointer
Store schema_ptr in reader permit instead of storing a const pointer to
schema to ensure that the schema doesn't get changed elsewhere when the
permit is holding on to it. Also update the constructors and all the
relevant callers to pass down schema_ptr instead of a raw pointer.

Fixes #16180

Signed-off-by: Lakshmi Narayanan Sreethar <lakshmi.sreethar@scylladb.com>

Closes scylladb/scylladb#16658
2024-01-11 08:37:56 +02:00
Botond Dénes
e1b30f50be reader_concurrency_semaphore: add register_metrics constructor parameter
To be used in the next patch to control whether the semaphore registers
and exports metrics or not. We want to move metric registration to the
semaphore but we don't want all semaphores to export metrics. The
decision on whether a semaphore should or shouldn't export metrics
should be made on a case-by-case basis so this new parameter has no
default value (except for the for_tests constructor).
2023-12-13 06:25:45 -05:00
Yaniv Kaul
c658bdb150 Typos: fix typos in comments
Fixes some typos as found by codespell run on the code.
In this commit, I was hoping to fix only comments, not user-visible alerts, output, etc.
Follow-up commits will take care of them.

Refs: https://github.com/scylladb/scylladb/issues/16255
Signed-off-by: Yaniv Kaul <yaniv.kaul@scylladb.com>
2023-12-02 22:37:22 +02:00
Pavel Emelyanov
eeee58def8 tests: Make use of make_memtable() helper
There's one in the utils that creates lw_shared_ptr<memtable> and
applies provided vector of mutations into it. Lots of other test cases
do literally the same by hand.

The make_memtable() assumes that the caller is sitting in the seastar
thread, and all the test cases that can benfit from it already are.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2023-11-02 19:28:35 +03:00
Botond Dénes
2f8d77e97b replica/table: add optional compacting to make_multishard_streaming_reader()
Doing to make_multishard_streaming_reader() what the previous commit did
to make_streaming_reader(). In fact, the new compaction_time parameter
is simply forwarded to the make_streaming_reader() on the shard readers.

Call sites are updated, but none opt in just yet.
2023-07-27 03:22:11 -04:00
Piotr Dulikowski
ee9bfb583c combined: mergers: remove recursion in operator()()
In mutation_reader_merger and clustering_order_reader_merger, the
operator()() is responsible for producing mutation fragments that will
be merged and pushed to the combined reader's buffer. Sometimes, it
might have to advance existing readers, open new and / or close some
existing ones, which requires calling a helper method and then calling
operator()() recursively.

In some unlucky circumstances, a stack overflow can occur:

- Readers have to be opened incrementally,
- Most or all readers must not produce any fragments and need to report
  end of stream without preemption,
- There has to be enough readers opened within the lifetime of the
  combined reader (~500),
- All of the above needs to happen within a single task quota.

In order to prevent such a situation, the code of both reader merger
classes were modified not to perform recursion at all. Most of the code
of the operator()() was moved to maybe_produce_batch which does not
recur if it is not possible for it to produce a fragment, instead it
returns std::nullopt and operator()() calls this method in a loop via
seastar::repeat_until_value.

A regression test is added.

Fixes: scylladb/scylladb#14415

Closes #14452
2023-06-30 12:07:13 +03:00
Kamil Braun
96bc78905d readers: evictable_reader: don't accidentally consume the entire partition
The evictable reader must ensure that each buffer fill makes forward
progress, i.e. the last fragment in the buffer has a position larger
than the last fragment from the previous buffer-fill. Otherwise, the
reader could get stuck in an infinite loop between buffer fills, if the
reader is evicted in-between.

The code guranteeing this forward progress had a bug: the comparison
between the position after the last buffer-fill and the current
last fragment position was done in the wrong direction.

So if the condition that we wanted to achieve was already true, we would
continue filling the buffer until partition end which may lead to OOMs
such as in #13491.

There was already a fix in this area to handle `partition_start`
fragments correctly - #13563 - but it missed that the position
comparison was done in the wrong order.

Fix the comparison and adjust one of the tests (added in #13563) to
detect this case.

Fixes #13491
2023-06-27 14:37:29 +02:00
Tomasz Grabiec
d92287f997 db: multishard: Obtain sharder from erm
This is not strictly necessary, as the multishard reader will be later
avoided altogether for tablet-based tables, but it is a step towards
converting all code to use the erm->get_sharder() instead of
schema::get_sharder().
2023-06-21 00:58:24 +02:00
Pavel Emelyanov
c2eb3e2c4c test/mutation_reader: Remove create_sstable() helper from test
It's a one-liner wrapper, caller can get the same result with existing
utils facilities

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2023-06-16 21:16:34 +03:00
Pavel Emelyanov
66e43912d6 code: Switch to seastar API level 7
In that level no io_priority_class-es exist. Instead, all the IO happens
in the context of current sched-group. File API no longer accepts prio
class argument (and makes io_intent arg mandatory to impls).

So the change consists of
- removing all usage of io_priority_class
- patching file_impl's inheritants to updated API
- priority manager goes away altogether
- IO bandwidth update is performed on respective sched group
- tune-up scylla-gdb.py io_queues command

The first change is huge and was made semi-autimatically by:
- grep io_priority_class | default_priority_class
- remove all calls, found methods' args and class' fields

Patching file_impl-s is smaller, but also mechanical:
- replace io_priority_class& argument with io_intent* one
- pass intent to lower file (if applicatble)

Dropping the priority manager is:
- git-rm .cc and .hh
- sed out all the #include-s
- fix configure.py and cmakefile

The scylla-gdb.py update is a bit hairry -- it needs to use task queues
list for IO classes names and shares, but to detect it should it checks
for the "commitlog" group is present.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

Closes #13963
2023-06-06 13:29:16 +03:00
Kefu Chai
82cac8e7cf treewide: s/std::source_location/seastar::compact::source_location/
CWG 2631 (https://cplusplus.github.io/CWG/issues/2631.html) reports
an issue on how the default argument is evaluated. this problem is
more obvious when it comes to how `std::source_location::current()`
is evaluated as a default argument. but not all compilers have the
same behavior, see https://godbolt.org/z/PK865KdG4.

notebaly, clang-15 evaluates the default argument at the callee
site. so we need to check the capability of compiler and fall back
to the one defined by util/source_location-compat.hh if the compiler
suffers from CWG 2631. and clang-16 implemented CWG2631 in
https://reviews.llvm.org/D136554. But unfortunately, this change
was not backported to clang-15.

before switching over to clang-16, for using std::source_location::current()
as the default parameter and expect the behavior defined by CWG2631,
we have to use the compatible layer provided by Seastar. otherwise
we always end up having the source_location at the callee side, which
is not interesting under most circumstances.

so in this change, all places using the idiom of passing
std::source_location::current() as the default parameter are changed
to use seastar::compat::source_location::current(). despite that
we have `#include "seastarx.h"` for opening the seastar namespace,
to disambiguate the "namespace compat" defined somewhere in scylladb,
the fully qualified name of
`seastar::compat::source_location::current()` is used.

see also 09a3c63345, where we used
std::source_location as an alias of std::experimental::source_location
if it was available. but this does not apply to the settings of our
current toolchain, where we have GCC-12 and Clang-15.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes #14086
2023-05-30 15:10:12 +03:00
Jan Ciolek
d2ef55b12c test: use NetworkTopologyStrategy in all unit tests
As described in https://github.com/scylladb/scylladb/issues/8638,
we're moving away from `SimpleStrategy`, in the future
it will become deprecated.

We should remove all uses of it and replace them
with `NetworkTopologyStrategy`.

This change replaces `SimpleStrategy` with
`NetworkTopologyStrategy` in all unit tests,
or at least in the ones where it was reasonable to do so.
Some of the tests were written explicitly to test the
`SimpleStrategy` strategy, or changing the keyspace from
`SimpleStrategy` to `NetworkTopologyStrategy`.
These tests were left intact.
It's still a feature that is supported,
even if it's slowly getting deprecated.

The typical way to use `NetworkTopologyStrategy` is
to specify a replication factor for each datacenter.
This could be a bit cumbersome, we would have to fetch
the list of datacenters, set the repfactors, etc.

Luckily there is another way - we can just specify
a replication factor to use for or each existing
datacenter, like this:
```cql
CREATE KEYSPACE {} WITH REPLICATION =
{'class' : 'NetworkTopologyStrategy', 'replication_factor' : 1};
```

This makes the change rather straightforward - just replace all
instances of `'SimpleStrategy'', with `'NetworkTopologyStrategy'`.

Refs: https://github.com/scylladb/scylladb/issues/8638

Signed-off-by: Jan Ciolek <jan.ciolek@scylladb.com>

Closes #13990
2023-05-23 08:52:56 +03:00
Botond Dénes
72003dc35c readers: evictable_reader: skip progress guarantee when next pos is partition start
The evictable reader must ensure that each buffer fill makes forward
progress, i.e. the last fragment in the buffer has a position larger
than the last fragment from the last buffer-fill. Otherwise, the reader
could get stuck in an infinite loop between buffer fills, if the reader
is evicted in-between.
The code guranteeing this forward change has a bug: when the next
expected position is a partition-start (another partition), the code
would loop forever, effectively reading all there is from the underlying
reader.
To avoid this, add a special case to ignore the progress guarantee loop
altogether when the next expected position is a partition start. In this
case, progress is garanteed anyway, because there is exactly one
partition-start fragment in each partition.

Fixes: #13491

Closes #13563
2023-05-02 16:19:32 +03:00
Benny Halevy
707bd17858 everywhere: optimize calls to make_flat_mutation_reader_from_mutations_v2 with single mutation
No point in going through the vector<mutation> entry-point
just to discover in run time that it was called
with a single-element vector, when we know that
in advance.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>

Closes #13733
2023-05-02 07:58:34 +03:00
Raphael S. Carvalho
a47bac931c Move TWCS option from table into TWCS itself
enable_optimized_twcs_queries is specific to TWCS, therefore it
belongs to TWCS, not replica::table.

Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>

Closes #13489
2023-04-14 08:28:16 +03:00
Botond Dénes
207dcbb8fa Merge 'sstables: prepare for uuid-based generation_type' from Benny Halevy
Preparing for #10459, this series defines sstables::generation_type::int_t
as `int64_t` at the moment and use that instead of naked `int64_t` variables
so it can be changed in the future to hold e.g. a `std::variant<int64_t, sstables::generation_id>`.

sstables::new_generation was defined to generation new, unique generations.
Currently it is based on incrementing a counter, but it can be extended in the future
to manufacture UUIDs.

The unit tests are cleaned up in this series to minimize their dependency on numeric generations.
Basically, they should be used for loading sstables with hard coded generation numbers stored under `test/resource/sstables`.

For all the rest, the tests should use existing and mechanisms introduced in this series such as generation_factory, sst_factory and smart make_sstable methods in sstable_test_env and table_for_tests to generate new sstables with a unique generation, and use the abstract sst->generation() method to get their generation if needed, without resorting the the actual value it may hold.

Closes #12994

* github.com:scylladb/scylladb:
  everywhere: use sstables::generation_type
  test: sstable_test_env: use make_new_generation
  sstable_directory::components_lister::process: fixup indentation
  sstables: make highest_generation_seen return optional generation
  replica: table: add make_new_generation function
  replica: table: move sstable generation related functions out of line
  test: sstables: use generation_type::int_t
  sstables: generation_type: define int_t
2023-03-30 17:05:07 +03:00
Benny Halevy
c09d0f6694 everywhere: use sstables::generation_type
Use generation_type rather than generation_type::int_t
where possible and removed the deprecated
functions accepting the int_t.i

Ref #10459

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-22 13:59:47 +02:00
Benny Halevy
d4d480a374 test: sstables: use generation_type::int_t
Convert all users to use sstables::generation_type::int_t.
Further patches will continue to convert most to
using sstables::generation_type instead so we can
abstract the value type.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-22 13:48:50 +02:00
Botond Dénes
156e5d346d reader_permit: keep trace_state pointer on permit
And propagate it down to where it is created. This will be used to add
trace points for semaphore related events, but this will come in the
next patches.
2023-03-22 04:58:01 -04:00
Benny Halevy
88d085ea66 test: sstable_test_env: add make_sst_factory methods
The tests extensively use a `std::function<shared_sstable()>`
to generate new tables.

Rather than handcrafting them all over the place,
let sstable_test_env return such factory given a schema
(and another entry point that also gets a version)
and that uses the embedded generation_factory in the test_env
to generate new sstables with unique generations.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-19 17:48:22 +02:00
Benny Halevy
e9c3f0e478 test: mutation_reader_test: create_sstable: do not rely on specific generations
No need to maintain a static generation numbers in the test.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-19 16:53:56 +02:00
Benny Halevy
648ab706df test: mutation_reader_test: do_test_clustering_order_merger_sstable_set: rely on test_envsstable generation
Rather than maintaining a running generation number,
use the default env.make_sstable(s) in sst_factory
and collect the expected generations from the resulting
shared sstable.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-19 16:53:56 +02:00
Benny Halevy
11595b3024 test: mutation_reader_test: combined_mutation_reader_test: define a local sst_factory function
For generating shared_sstables with increasing generations
(using the test_env make_sstable generations) and a given level.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-19 16:53:56 +02:00
Benny Halevy
506dc1260f test: mutation_reader_test: do not use tmpdir
Rely on the test_env temporary directory instead.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-19 16:53:56 +02:00
Benny Halevy
f24b69a6ae test: sstable_compaction_test: use highest sstable version by default
Tests should just generate the highest sstable version
available.  There is no need to ontinue testing old versions,
in particular partially supported ones like "la".

Use also the default values for sstable::format_types, buffer_size,
etc. if there's no particular need to override them.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2023-03-19 16:53:56 +02:00
Kefu Chai
3ae11de204 treewide: do not define/capture unused variables
these warnings are found by Clang-17 after removing
`-Wno-unused-lambda-capture` and '-Wno-unused-variable' from
the list of disabled warnings in `configure.py`.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
2023-02-28 21:56:53 +08:00
Avi Kivity
69a385fd9d Introduce schema/ module
Schema related files are moved there. This excludes schema files that
also interact with mutations, because the mutation module depends on
the schema. Those files will have to go into a separate module.

Closes #12858
2023-02-15 11:01:50 +02:00
Avi Kivity
c5e4bf51bd Introduce mutation/ module
Move mutation-related files to a new mutation/ directory. The names
are kept in the global namespace to reduce churn; the names are
unambiguous in any case.

mutation_reader remains in the readers/ module.

mutation_partition_v2.cc was missing from CMakeLists.txt; it's added in this
patch.

This is a step forward towards librarization or modularization of the
source base.

Closes #12788
2023-02-14 11:19:03 +02:00
Tomasz Grabiec
ccc8e47db1 Merge 'test/lib: introduce key_utils.hh' from Botond Dénes
We currently have two method families to generate partition keys:
* make_keys() in test/lib/simple_schema.hh
* token_generation_for_shard() in test/lib/sstable_utils.hh

Both work only for schemas with a single partition key column of `text` type and both generate keys of fixed size.
This is very restrictive and simplistic. Tests, which wanted anything more complicated than that had to rely on open-coded key generation.
Also, many tests started to rely on the simplistic nature of these keys, in particular two tests started failing because the new key generation method generated keys of varying size:
* sstable_compaction_test.sstable_run_based_compaction_test
* sstable_mutation_test.test_key_count_estimation

These two tests seems to depend on generated keys all being of the same size. This makes some sense in the case of the key count estimation test, but makes no sense at all to me in the case of the sstable run test.

Closes #12657

* github.com:scylladb/scylladb:
  test/lib/sstable_utils: remove now unused token_generation_for_shard() and friends
  test/lib/simple_schema: remove now unused make_keys() and friends
  test: migrate to tests::generate_partition_key[s]()
  test/lib/test_services: add table_for_tests::make_default_schema()
  test/lib: add key_utils.hh
  test/lib/random_schema.hh: value_generator: add min_size_in_bytes
2023-02-06 18:11:32 +01:00
Raphael S. Carvalho
3c5afb2d5c test: Enable Scylla test command line options for boost tests
We have enabled the command line options without changing a
single line of code, we only had to replace old include
with scylla_test_case.hh.

Next step is to add x-log-compaction-groups options, which will
determine the number of compaction groups to be used by all
instantiations of replica::table.

Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
2023-02-01 20:14:51 -03:00