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50fbac6ea6
By default it's true, in which case tablet count of the table is rounded up to a power of two. This option allows lifting this, in which case the count can be arbitrary. This will allow testing the logic of arbitrary tablet count.
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
/*
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* Copyright 2025-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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*/
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#pragma once
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#include <map>
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#include <seastar/core/sstring.hh>
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using namespace seastar;
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namespace gms { class feature_service; }
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namespace db {
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// Per-table tablet options
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enum class tablet_option_type {
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min_tablet_count,
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max_tablet_count,
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min_per_shard_tablet_count,
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expected_data_size_in_gb,
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pow2_count,
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};
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struct tablet_options {
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// System-wide default for pow2_count if the option is not set.
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static const bool default_pow2_count = true;
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using map_type = std::map<sstring, sstring>;
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std::optional<ssize_t> min_tablet_count;
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std::optional<ssize_t> max_tablet_count;
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std::optional<double> min_per_shard_tablet_count;
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std::optional<ssize_t> expected_data_size_in_gb;
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std::optional<bool> pow2_count;
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tablet_options() = default;
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explicit tablet_options(const map_type& map);
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operator bool() const noexcept {
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return min_tablet_count || max_tablet_count || min_per_shard_tablet_count || expected_data_size_in_gb || pow2_count;
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}
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map_type to_map() const;
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static sstring to_string(tablet_option_type hint);
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static tablet_option_type from_string(sstring hint_desc);
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static void validate(const map_type& map, const gms::feature_service& features);
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};
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} // namespace db
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